{"id":88,"date":"2025-05-05T01:14:09","date_gmt":"2025-05-04T17:14:09","guid":{"rendered":"http:\/\/www.s7arry.top\/?p=88"},"modified":"2025-05-08T19:15:16","modified_gmt":"2025-05-08T11:15:16","slug":"pytorch1","status":"publish","type":"post","link":"https:\/\/www.s7arry.top\/index.php\/2025\/05\/05\/pytorch1\/","title":{"rendered":"\u51c6\u725b\u9a6c\u7684Pytorch\u5b66\u4e60\uff081\uff09\u57fa\u7840\u6982\u5ff5"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"gDr0W\">\u6df1\u5165\u6d45\u51faPyTorch<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"kn7cN\">\u4e3a\u4ec0\u4e48\u8981\u5b66\u4e60PyTorch\uff1f<\/h2>\n\n\n\n<p id=\"u3748f8eb\">Pytorch\u65e5\u76ca\u589e\u957f\u7684\u53d1\u5c55\u901f\u5ea6\u4e0e\u6df1\u5ea6\u5b66\u4e60\u65f6\u4ee3\u7684\u8feb\u5207\u9700\u8981\u3002\uff08\u5176\u5b9e\u662f\u5bfc\u5e08\u9879\u76ee\u8981\u7528\u8fd9\u4e2a\u4e0d\u5f97\u4e0d\u5b66\uff09<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"TtuuD\"\/>\n\n\n\n<p id=\"u01acc9fd\">Pytorch\u4f18\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0a\u624b\u5feb\uff1a\u638c\u63e1Numpy\u548c\u57fa\u672c\u6df1\u5ea6\u5b66\u4e60\u6982\u5ff5\u5373\u53ef\u4e0a\u624b\u2029<\/li>\n\n\n\n<li>\u4ee3\u7801\u7b80\u6d01\u7075\u6d3b\uff1a\u7528nn.module\u5c01\u88c5\u4f7f\u7f51\u7edc\u642d\u5efa\u66f4\u65b9\u4fbf\uff1b\u57fa\u4e8e\u52a8\u6001\u56fe\u673a\u5236\uff0c\u66f4\u7075\u6d3b\u2029<\/li>\n\n\n\n<li>Debug\u65b9\u4fbf\uff1a\u8c03\u8bd5PyTorch\u5c31\u50cf\u8c03\u8bd5Python\u4ee3\u7801\u4e00\u6837\u7b80\u5355<\/li>\n\n\n\n<li>\u6587\u6863\u89c4\u8303\uff1ahttps:\/\/pytorch.org\/docs\/\u53ef\u67e5\u5404\u7248\u672c\u6587\u6863\u2029<\/li>\n\n\n\n<li>\u8d44\u6e90\u591a\uff1aarXiv\u4e2d\u7684\u65b0\u7b97\u6cd5\u5927\u591a\u6709PyTorch\u5b9e\u73b0\u2029<\/li>\n\n\n\n<li>\u5f00\u53d1\u8005\u591a\uff1aGitHub\u4e0a\u8d21\u732e\u8005\uff08Contributors\uff09\u5df2\u8d85\u8fc71350+\u2029<\/li>\n\n\n\n<li>\u80cc\u9760\u5927\u6811\uff1aFaceBook\u7ef4\u62a4\u5f00\u53d1<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"tXJyT\"\/>\n\n\n\n<p id=\"u35c79d5c\">\u5b66\u4e60Pytorch\u6536\u76ca\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"891\" height=\"484\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-8.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-104\"  sizes=\"auto, (max-width: 891px) 100vw, 891px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"WJnJY\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Fxv23\">Pytorch\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6<\/h2>\n\n\n\n<p id=\"ud0ae1d23\">Pytorch\u5b9a\u4f4d\uff1a\u6df1\u5ea6\u5b66\u4e60\u6846\u67b6\uff0c\u5b9e\u73b0\u6df1\u5ea6\u5b66\u4e60\u6a21\u578b\u7b97\u6cd5<\/p>\n\n\n\n<p id=\"u1eaa0ec6\">\u4eba\u5de5\u667a\u80fd\uff1a\u591a\u9886\u57df\u4ea4\u53c9\u79d1\u5b66\u6280\u672f<\/p>\n\n\n\n<p id=\"u578ca97f\">\u673a\u5668\u5b66\u4e60\uff1a\u8ba1\u7b97\u673a\u667a\u80fd\u51b3\u7b56\u7b97\u6cd5<\/p>\n\n\n\n<p id=\"ueb2122c5\">\u6df1\u5ea6\u5b66\u4e60\uff1a\u9ad8\u6548\u7684\u673a\u5668\u5b66\u4e60\u7b97\u6cd5<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"vAOzn\"\/>\n\n\n\n<p id=\"u6e9618eb\">Pytorch\u5b9e\u73b0\u6a21\u578b\u8bad\u7ec3<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-7-1024x302.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"302\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-7-1024x302.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-102\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u6e9618eb\"><\/p>\n\n\n\n<p id=\"u6bea6498\">\u6a21\u578b\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\u7ec6\u5206\u7684\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-9-1024x412.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"412\" data-id=\"105\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-9-1024x412.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-105\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"ONsGi\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"W0h4j\">\u5982\u4f55\u5b66\u4e60\u548c\u638c\u63e1Pytorch<\/h2>\n\n\n\n<p id=\"udc13d64a\">\u5b66\u4e60Pytorch\u7684\u56f0\u5883<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-10-1024x394.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"394\" data-id=\"106\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-10-1024x394.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-106\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<p id=\"u73d03c81\">\u8ddf\u8bfe\u3001\u591a\u601d\u8003\u3001\u591a\u5b9e\u8df5\u3001\u591a\u95ee\u5927\u6a21\u578b\u3001\u591a\u603b\u7ed3<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-11-1024x481.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"481\" data-id=\"107\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-11-1024x481.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-107\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"pPzJ2\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"snIPs\">Pytorch\u5b66\u4e60\u8def\u5f84<\/h2>\n\n\n\n<p id=\"u4f0835de\">\u6574\u4e2a\u8bfe\u7a0b\u5927\u81f4\u7684\u5b66\u4e60\u5185\u5bb9<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-12-1024x489.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"489\" data-id=\"108\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-12-1024x489.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-108\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"SNPTJ\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"IG0Xi\">Pytorch\u5b66\u4e60\u8def\u7ebf<\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-13-1024x724.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"724\" data-id=\"109\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-13-1024x724.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-109\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"IifsP\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"E0WPP\">\u6700\u7ec8\u80fd\u8fbe\u5230\u7684\u76ee\u6807<\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-6 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-14-1024x400.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"400\" data-id=\"110\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-14-1024x400.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-110\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"eukd1\"\/>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"hQ4WK\">Pytorch\u7b80\u4ecb\u4e0e\u5b89\u88c5<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"WXA99\">Pytorch\u7b80\u4ecb<\/h2>\n\n\n\n<p id=\"u1d073321\">\u7b80\u800c\u8a00\u4e4b\uff0cPytorch\u662f\u5728Torch\u57fa\u7840\u4e0a\u7528python\u8bed\u8a00\u91cd\u65b0\u6253\u9020\u7684\u6df1\u5ea6\u5b66\u4e60\u6846\u67b6\u3002<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-7 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-15-1024x529.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"529\" data-id=\"111\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-15-1024x529.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-111\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<p id=\"u3b0e75a6\">Pytorch\u53d1\u5c55\u8fc5\u901f\uff0c\u5728\u6df1\u5ea6\u5b66\u4e60\u9886\u57df\u5360\u6bd4\u589e\u957f\u901f\u5ea6\u5f88\u5feb\u3002<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-8 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-16-1024x363.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"363\" data-id=\"113\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-16-1024x363.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-113\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<p id=\"u3a81bb0f\">\u8fd9\u4e9b\u5728\u4e0a\u9762\u5df2\u7ecf\u8bf4\u660e\u4e86\u5f88\u591a\uff0c\u8fd9\u91cc\u4e0d\u591a\u8d58\u8ff0\u4e86\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"QX4Wl\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"hVPTg\">\u8f6f\u4ef6\u5b89\u88c5\uff08\u73af\u5883\u914d\u7f6e\u4e0e\u642d\u5efa\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"LDOYv\">\u89e3\u91ca\u5668\u4e0e\u5de5\u5177\u5305<\/h3>\n\n\n\n<p id=\"u08fb62ed\">\u89e3\u91ca\u5668\uff1a\u5c06python\u8bed\u8a00\u7ffb\u8bd1\u6210\u673a\u5668\u6307\u4ee4\u8bed\u8a00\u7684\u7a0b\u5e8f<\/p>\n\n\n\n<p id=\"u09234e93\">\u5de5\u5177\u5305\uff1a\u53c8\u79f0\u4e4b\u4e3a\u4f9d\u8d56\u5305\u3001\u6a21\u5757\u3001\u5e93\u3001\u5305\u7b49<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>python\u4e4b\u6240\u4ee5\u5f3a\u5927\u662f\u56e0\u4e3a\u62e5\u6709\u5927\u91cf\u5de5\u5177\u5305<\/li>\n\n\n\n<li>\u5185\u7f6e\u5305\uff1aos\u3001sys\u3001glob\u3001re\u3001math\u7b49<\/li>\n\n\n\n<li>\u7b2c\u4e09\u65b9\u5305\uff1apytorch\u3001TensorFlow\u3001numpy\u7b49<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ynvyJ\">\u865a\u62df\u73af\u5883<\/h3>\n\n\n\n<p id=\"u0a86b682\">\u5728python\u5f00\u53d1\u73af\u5883\u4e2d\uff0c\u6709python\u89e3\u91ca\u5668\u4e0e\u5de5\u5177\u5305\u3002<\/p>\n\n\n\n<p id=\"u3c170a03\">\u5728\u4e0d\u540c\u9879\u76ee\u4e2d\uff0c\u91c7\u7528\u7684\u89e3\u91ca\u5668\u7248\u672c\u4e0e\u5de5\u5177\u5305\u7248\u672c\u53ef\u80fd\u4e0d\u540c\u3002<\/p>\n\n\n\n<p id=\"ueae8fe55\">\u6240\u4ee5\u6211\u4eec\u4e3a\u9879\u76ee\u521b\u5efa\u865a\u62df\u73af\u5883\u6765\u6ee1\u8db3\u9700\u6c42\uff0c\u5404\u73af\u5883\u95f4\u76f8\u4e92\u72ec\u7acb\uff0c\u53ef\u4ee5\u968f\u610f\u5207\u6362<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-9 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-17-1024x391.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"391\" data-id=\"114\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-17-1024x391.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-114\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"iol1U\">Anaconda<\/h3>\n\n\n\n<p id=\"udf287495\">Anaconda\u662f\u4e3a\u65b9\u4fbf\u4f7f\u7528python\u800c\u5efa\u7acb\u7684\u4e00\u4e2a\u8f6f\u4ef6\u5305\uff0c\u5176\u5305\u542b\u4e86\u5e38\u7528\u7684250\u591a\u4e2a\u5de5\u5177\u5305\uff0c\u591a\u7248\u672cpython\u89e3\u91ca\u5668\u548c\u5f3a\u5927\u7684\u865a\u62df\u73af\u5883\u7ba1\u7406\u5de5\u5177\u3002<\/p>\n\n\n\n<p id=\"u4ab9a1b6\">Anaconda\u53ef\u4ee5\u4f7f\u5b89\u88c5\u3001\u8fd0\u884c\u548c\u5347\u7ea7\u73af\u5883\u53d8\u5f97\u7b80\u5355\uff0c\u56e0\u6b64\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n\n\n\n<p id=\"ub34c31c6\">\u5b89\u88c5\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"Https:\/\/www.anaconda.com\/distribution\/#download-section\" target=\"_blank\" rel=\"noreferrer noopener\">Https:\/\/www.anaconda.com\/distribution\/#download-section<\/a>\u5b98\u7f51\u4e0b\u8f7d\u5b89\u88c5\u5305<\/li>\n\n\n\n<li>\u8fd0\u884cAnaconda3-2019.07-Windows-x86 64.exe<\/li>\n\n\n\n<li>\u9009\u62e9\u8def\u5f84\uff0c\u52fe\u9009\u5c06Add Anaconda to the system PATH environment variable\uff0c\u7b49\u5f85\u5b89\u88c5\u5b8c\u6210<\/li>\n\n\n\n<li>\u9a8c\u8bc1\u5b89\u88c5\u6210\u529f\uff0c\u6253\u5f00\u547d\u4ee4\u3001\u8f93\u5165Conda\u3001\u56de\u8f66<\/li>\n\n\n\n<li>\u6dfb\u52a0\u4e2d\u79d1\u5927\u955c\u50cf<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"qlho3\">Pycharm\uff08\u53ef\u4ee5\u4f7f\u7528VScode\uff09<\/h3>\n\n\n\n<p id=\"u2a9ae72e\">Pycharm\u662f\u4e00\u6b3epython\u7684IDE\uff0c\u603b\u4e4b\u529f\u80fd\u5f3a\u5927\u5c31\u5bf9\u4e86\u3002<\/p>\n\n\n\n<p id=\"u2b2d0b8f\">\u5b89\u88c5\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5b98\u7f51\u4e0b\u8f7d\u5b89\u88c5\u5305<a href=\"https:\/\/www.jetbrains.com\/pycharm\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.jetbrains.com\/pycharm\/<\/a>\u2029<\/li>\n\n\n\n<li>\u8fd0\u884cpycharm-professional-2019.2.exe\u2029<\/li>\n\n\n\n<li>\u9009\u62e9\u8def\u5f84\uff0c\u52fe\u9009Add launchers dir to the PATH\uff0c\u7b49\u5f85\u5b89\u88c5\u5b8c\u6210<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"E7Pko\">Pytorch<\/h3>\n\n\n\n<p id=\"u88ee245f\">\u5b89\u88c5\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u68c0\u67e5\u662f\u5426\u6709\u5408\u9002GPU\uff0c\u82e5\u6709\uff0c\u9700\u5b89\u88c5CUDA\u4e0eCuDNN<\/li>\n\n\n\n<li>CUDA\u4e0eCuDNN\u5b89\u88c5\uff08\u975e\u5fc5\u987b\uff09<\/li>\n\n\n\n<li>\u4e0b\u8f7dwhl\u6587\u4ef6\uff0c\u767b\u9646<a href=\"https:\/\/download.pytorch.org\/whl\/torch_stable.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/download.pytorch.org\/whl\/torch_stable.html<\/a>\uff0c\u4e0b\u8f7dpytorch\u4e0etorchvision\u7684whl\u6587\u4ef6\uff0c\u8fdb\u5165\u76f8\u5e94\u865a\u62df\u73af\u5883\uff0c\u901a\u8fc7pip\u5b89\u88c5<\/li>\n\n\n\n<li>\u5728pycharm\u4e2d\u521b\u5efahellopytorch\u9879\u76ee\uff0c\u8fd0\u884c\u811a\u672c\uff0c\u67e5\u770bpytorch\u7248\u672c<\/li>\n<\/ol>\n\n\n\n<p id=\"ua2d1fe46\">\u547d\u540d\u89e3\u91ca\uff1a<\/p>\n\n\n\n<p id=\"u08b24941\">cu92\/torch-1.2.0%2Bcu92-cp37-cp37m-win_amd64.whl<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"vRz3I\">Anaconda\u521b\u5efa\u865a\u62df\u73af\u5883<\/h3>\n\n\n\n<p id=\"u117f4b8f\">\u9700\u8981\u65b0\u5efa\u4e00\u4e2a\u73af\u5883\u53ef\u4ee5\u8d77\u540d\u53eb\u505aDL\uff08\u5176\u4ed6\u4e5f\u884c\uff09<\/p>\n\n\n\n<pre id=\"uzs1D\" class=\"wp-block-code\"><code>conda create -n DL python=3.8\nconda env list\nconda activate DL\nconda install jupyter\npip insatll scikit-learn<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"aodlM\"\/>\n\n\n\n<p id=\"u1b65c4b3\">\u4ee5\u4e0a\u5168\u90e8\u53ef\u4ee5\u770bCSDN\u4e0a\u8be6\u7ec6\u7684\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<p id=\"u50abe324\"><a href=\"https:\/\/blog.csdn.net\/Little_Carter\/article\/details\/135934842?ops_request_misc=%257B%2522request%255Fid%2522%253A%25226f4f98b061723def7702948a6b9272a7%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&amp;request_id=6f4f98b061723def7702948a6b9272a7&amp;biz_id=0&amp;utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-135934842-null-null.142^v101^pc_search_result_base9&amp;utm_term=pytorch%E5%AE%89%E8%A3%85&amp;spm=1018.2226.3001.4187\" target=\"_blank\" rel=\"noreferrer noopener\">\u3010\u8d85\u8be6\u7ec6\u6559\u7a0b\u30112024\u6700\u65b0Pytorch\u5b89\u88c5\u6559\u7a0b\uff08\u540c\u65f6\u8bb2\u89e3\u5b89\u88c5CPU\u548cGPU\u7248\u672c\uff09-CSDN\u535a\u5ba2<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"rcqar\">\u7a0b\u5e8f\u8f93\u51fa\u4e00\u4e0b<\/h3>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-10 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-36.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"575\" height=\"147\" data-id=\"135\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-36.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-135\"  sizes=\"auto, (max-width: 575px) 100vw, 575px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"HhtyL\"\/>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"RXO1N\">Pytorch\u7684Tensor\uff08\u5f20\u91cf\uff09<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"QbVPE\">\u5f20\u91cf\u662f\u4ec0\u4e48\uff1f<\/h2>\n\n\n\n<p id=\"u54f77f37\">\u5f20\u91cf\u5728\u6570\u5b66\u6982\u5ff5\u4e2d\u662f\u4e00\u4e2a<strong>\u591a\u7ef4\u6570\u7ec4<\/strong>\uff0c\u5b83\u662f\u6807\u91cf\u3001\u5411\u91cf\u3001\u77e9\u9635\u7684\u9ad8\u7ef4\u62d3\u5c55<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-11 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-18-1024x307.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"307\" data-id=\"115\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-18-1024x307.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-115\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"HPWSV\">Tensor\u4e0eVariable<\/h3>\n\n\n\n<p id=\"u48e68e31\">variable\u4e3b\u8981\u662f\u7ed9Tensor\u589e\u52a0\u4e86\u56db\u4e2a\u5c5e\u6027\uff0c\u8fd9\u56db\u4e2a\u5c5e\u6027\u7528\u4e8e\u81ea\u52a8\u6c42\u5bfc<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-12 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-19-1024x360.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"360\" data-id=\"116\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-19-1024x360.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-116\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"k4eXi\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Ee0Br\">Tensor<\/h3>\n\n\n\n<p id=\"u5fe54d34\">\u4e0b\u65b9\u7684\u56db\u4e2a\u5728Variable\u4e2d\u4ecb\u7ecd\u8fc7\u4e86\uff0c\u4e0e\u6c42\u5bfc\u76f8\u5173\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-13 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-20-1024x434.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"434\" data-id=\"117\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-20-1024x434.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-117\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"qac9a\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"R0Nkt\">\u5f20\u91cf\u7684\u521b\u5efa<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"gCXxo\">1 \u76f4\u63a5\u521b\u5efa<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"EODmQ\">\u4ecedata\u521b\u5efatensor<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-14 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-21-1024x405.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"405\" data-id=\"118\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-21-1024x405.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-118\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<pre id=\"rX5Wk\" class=\"wp-block-code\"><code>import numpy as np\nimport torch\narr = np.ones((3,3))\nprint(\"ndarray\u7684\u6570\u636e\u7c7b\u578b:\",arr.dtype)\n\nt=torch.tensor(arr,device='cuda')\nprint(t)<\/code><\/pre>\n\n\n\n<p id=\"ua1fdd744\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"483\" height=\"262\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-90\"  sizes=\"auto, (max-width: 483px) 100vw, 483px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ua1fdd744\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"n9tS2\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"AmH1W\">\u4ecenumpy\u521b\u5efatensor<\/h4>\n\n\n\n<p id=\"uab48b21c\">\u6ce8\u610f\uff1a\u901a\u8fc7\u8fd9\u6837\u65b9\u5f0f\u521b\u5efa\u7684tensor\u4e0e\u539fndarray<strong>\u5171\u4eab\u5185\u5b58<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-15 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-22-1024x478.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"478\" data-id=\"119\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-22-1024x478.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-119\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<pre id=\"HflXT\" class=\"wp-block-code\"><code>import numpy as np\nimport torch\narr = np.array(&#91;&#91;1,2,3],&#91;4,5,6]])\n\nt=torch.from_numpy(arr)\nprint(\"numpy array:\",arr)\nprint(\"tensor:\",t)<\/code><\/pre>\n\n\n\n<p id=\"u5c00367c\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"296\" height=\"75\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-91\"\/><\/div><\/figure>\n\n\n\n<p id=\"u5c00367c\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"G7yz0\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"VpvAL\">2 \u4f9d\u636e\u6570\u503c\u521b\u5efa<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"xRHH4\">\u4f9d\u636e\u6570\u503c\u521b\u5efa\u51680\u5f20\u91cf<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-16 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-23-1024x438.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"438\" data-id=\"120\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-23-1024x438.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-120\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<p id=\"ud4be1b53\">\u7531\u4ee3\u7801\u6211\u4eec\u53ef\u4ee5\u5f97\u77e5\uff0c\u6211\u4eec\u521b\u5efa\u7684t\u8d4b\u503c\u7ed9\u4e86out_t<\/p>\n\n\n\n<pre id=\"B9iat\" class=\"wp-block-code\"><code>import torch\n\nout_t = torch.tensor(&#91;1])\n\nt = torch.zeros((3,3),out=out_t)\n\nprint(t,'\\n',out_t)\nprint(id(t,),id(out_t),id(t)==id(out_t))<\/code><\/pre>\n\n\n\n<p id=\"u037d8c39\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-3.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"264\" height=\"134\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-3.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-92\"\/><\/div><\/figure>\n\n\n\n<p id=\"u037d8c39\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"nClYk\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"X0OPF\">\u4f9d\u636e\u6570\u503c\u521b\u5efa\u51681\u5f20\u91cf<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-17 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-24-1024x405.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"405\" data-id=\"121\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-24-1024x405.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-121\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<p id=\"ue9835dc9\">\u8fd9\u91ccones\u4e0e\u4e0a\u9762\u662f\u7c7b\u4f3c\u7684<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-18 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-25-1024x455.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"455\" data-id=\"122\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-25-1024x455.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-122\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<p id=\"uf484397f\">pytorch\u8fd8\u7ed9\u6211\u4eec\u63d0\u4f9b\u4e86\u586b\u5145\u4efb\u610f\u503c\u7684\u51fd\u6570<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-19 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-26-1024x417.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"417\" data-id=\"123\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-26-1024x417.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-123\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<pre id=\"yS4no\" class=\"wp-block-code\"><code>import torch\n\nt = torch.full((3,3),10)\nprint(t)<\/code><\/pre>\n\n\n\n<p id=\"ua034f442\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"181\" height=\"67\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-93\"\/><\/div><\/figure>\n\n\n\n<p id=\"ua034f442\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"dA18T\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"sh70A\">\u521b\u5efa\u7b49\u5dee\u6570\u5217\u7684\u5f20\u91cf<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-20 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-27-1024x396.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"396\" data-id=\"124\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-27-1024x396.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-124\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<pre id=\"jjnqc\" class=\"wp-block-code\"><code>import torch\n\nt = torch.arange(2,10,2)\nprint(t)<\/code><\/pre>\n\n\n\n<p id=\"ueff3b24f\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"167\" height=\"30\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-94\"\/><\/div><\/figure>\n\n\n\n<p id=\"ueff3b24f\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"oENK1\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"NLS61\">\u521b\u5efa\u5747\u5206\u6570\u5217\u7684\u5f20\u91cf<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-21 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-28-1024x366.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"366\" data-id=\"125\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-28-1024x366.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-125\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<pre id=\"u6ogo\" class=\"wp-block-code\"><code>import torch\n\nt = torch.linspace(2,10,5)\nprint(t)<\/code><\/pre>\n\n\n\n<p id=\"u1aa46dce\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"265\" height=\"34\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-95\"\/><\/div><\/figure>\n\n\n\n<p id=\"u1aa46dce\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"mmUZ1\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"w4MI2\">\u521b\u5efa\u5bf9\u6570\u5747\u5206\u7684\u5f20\u91cf<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-22 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-29-1024x405.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"405\" data-id=\"126\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-29-1024x405.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-126\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"kA2cg\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"dwDNh\">\u521b\u5efa\u5355\u4f4d\u5bf9\u89d2\u77e9\u9635\u5f20\u91cf<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-23 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-30-1024x325.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"325\" data-id=\"127\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-30-1024x325.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-127\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"US6j5\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"kQvFN\">3 \u4f9d\u636e\u6982\u7387\u5206\u5e03\u521b\u5efa\u5f20\u91cf<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"LJXoh\">\u6b63\u6001\u5206\u5e03<\/h4>\n\n\n\n<p id=\"u635d1517\">\u4e5f\u79f0\u4e3a\u9ad8\u65af\u5206\u5e03<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-24 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-31-1024x292.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"292\" data-id=\"128\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-31-1024x292.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-128\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<p>\u56db\u79cd\u6a21\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>mean\u4e3a\u6807\u91cf\uff0cstd\u4e3a\u6807\u91cf<\/li>\n\n\n\n<li>mean\u4e3a\u6807\u91cf\uff0cstd\u4e3a\u5f20\u91cf<\/li>\n\n\n\n<li>mean\u4e3a\u5f20\u91cf\uff0cstd\u4e3a\u6807\u91cf<\/li>\n\n\n\n<li>mean\u4e3a\u5f20\u91cf\uff0cstd\u4e3a\u5f20\u91cf<\/li>\n<\/ul>\n\n\n\n<pre id=\"r3KI7\" class=\"wp-block-code\"><code>import torch\n#mean:\u5f20\u91cf std:\u5f20\u91cf\n# mean = torch.arange(1,5,dtype=torch.float)\n# std = torch.arange(1,5,dtype=torch.float)\n# t_normal = torch.normal(mean,std)\n# print(\"mean:{}\\nstd:{}\".format(mean,std))\n# print(t_normal)\n\n#mean:\u6807\u91cf std:\u6807\u91cf\n# t_normal = torch.normal(0., 1., size=(4,))\n# print(t_normal)\n\n#mean:\u5f20\u91cf std:\u6807\u91cf\n# mean = torch.arange(1,5,dtype=torch.float)\n# std = 1\n# t_normal = torch.normal(mean,std)\n# print(\"mean:{}\\nstd:{}\".format(mean,std))\n# print(t_normal)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"tT6Yw\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"fgxwX\">\u6807\u51c6\u6b63\u6001\u5206\u5e03<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-25 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-33-1024x293.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"293\" data-id=\"130\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-33-1024x293.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-130\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"znGW4\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"SF6Qj\">\u5747\u5300\u5206\u5e03<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-26 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-34-1024x417.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"417\" data-id=\"131\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-34-1024x417.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-131\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"LmAQK\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"qUhkg\">\u968f\u673a\u6392\u5217\u548c\u6982\u7387\u503c<\/h4>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-27 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-35-1024x458.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"458\" data-id=\"132\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-35-1024x458.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-132\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"ufCoA\"\/>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"aFldn\">\u5f20\u91cf\u7684\u64cd\u4f5c\u4e0e\u7ebf\u6027\u56de\u5f52<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"SNNPI\">\u5f20\u91cf\u7684\u64cd\u4f5c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"uzVBQ\">\u62fc\u63a5<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-37-1024x459.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"459\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-37-1024x459.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-140\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"neTCp\" class=\"wp-block-code\"><code>import torch\n\nt = torch.ones((2,3))\n\nt_0 = torch.cat(&#91;t,t],dim=0)\nt_1 = torch.cat(&#91;t,t],dim=1)\n\nprint(\"t_0:{} shape:{}\".format(t_0,t_0.shape))\nprint(\"t_1:{} shape:{}\".format(t_1,t_1.shape))<\/code><\/pre>\n\n\n\n<p id=\"ubb7c161d\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-38.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"473\" height=\"122\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-38.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-141\"  sizes=\"auto, (max-width: 473px) 100vw, 473px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ubb7c161d\"><\/p>\n\n\n\n<pre id=\"PY3Da\" class=\"wp-block-code\"><code>import torch\nt=torch.ones((2,3))\nt_stack=torch.stack(&#91;t,t],dim=2)\nprint(\"t_stack:{} shape:{}\".format(t_stack,t_stack.shape))<\/code><\/pre>\n\n\n\n<p id=\"ub145c741\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-39.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"382\" height=\"141\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-39.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-142\"  sizes=\"auto, (max-width: 382px) 100vw, 382px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p id=\"ub145c741\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5207\u5206<\/h3>\n\n\n\n<p id=\"u0a1dccf7\">\u5e73\u5747\u5207\u5206<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-40.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"918\" height=\"472\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-40.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-143\"  sizes=\"auto, (max-width: 918px) 100vw, 918px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"dinPH\" class=\"wp-block-code\"><code>import torch\n\na = torch.ones((2,5))\nlist_of_tensors = torch.chunk(a,dim=1,chunks=2)\n\nfor idx,t in enumerate(list_of_tensors):\n    print(\"\u7b2c{}\u4e2a\u5f20\u91cf\uff1a{} shape is{}\".format(idx+1,t,t.shape))<\/code><\/pre>\n\n\n\n<p id=\"uaca884fc\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-41.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"389\" height=\"89\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-41.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-144\"  sizes=\"auto, (max-width: 389px) 100vw, 389px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uaca884fc\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"Iq8ED\"\/>\n\n\n\n<p id=\"ub1e878d9\">\u53ef\u4ee5\u6307\u5b9a\u5207\u5206\u957f\u5ea6<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-42-1024x408.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"408\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-42-1024x408.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-145\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ub1e878d9\"><\/p>\n\n\n\n<pre id=\"o1NmN\" class=\"wp-block-code\"><code>import torch\nt=torch.ones((2,5))\nt=torch.ones((2,5))\n\nlist_of_tensors = torch.split(t,&#91;2,1,2],dim=1)\n\nfor idx,t in enumerate(list_of_tensors):\n    print(\"\u7b2c{}\u4e2a\u5f20\u91cf\uff1a{} shape is{}\".format(idx+1,t,t.shape))<\/code><\/pre>\n\n\n\n<p id=\"ub145c741\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-43.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"363\" height=\"126\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-43.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-146\"  sizes=\"auto, (max-width: 363px) 100vw, 363px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ub145c741\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"qiXb7\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"CEunS\">\u7d22\u5f15<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-44-1024x411.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"411\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-44-1024x411.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-147\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"EEEQW\" class=\"wp-block-code\"><code>import torch\n\nt = torch.randint(0,9,size=(3,3))\nidx = torch.tensor(&#91;0,2],dtype=torch.long)\nt_select = torch.index_select(t,dim=0,index=idx)\nprint(\"t:\\n{}\\nt_select:\\n{}\".format(t,t_select))<\/code><\/pre>\n\n\n\n<p id=\"u761d78c3\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-45.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"170\" height=\"138\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-45.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-148\"\/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"eFmox\"\/>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-46-1024x357.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"357\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-46-1024x357.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-149\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"FfXl3\" class=\"wp-block-code\"><code>import torch\n\nt = torch.randint(0,9,size=(3,3))\nmask = t.ge(5) #\u5927\u4e8e\u7b49\u4e8e5\u7684\u5143\u7d20\u4e3aTrue\nt_select = torch.masked_select(t,mask)\n\nprint(\"t:\\n{}\\nmask:\\n{}\\nt_select:\\n{}\".format(t,mask,t_select))<\/code><\/pre>\n\n\n\n<p id=\"uaf691464\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-47.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"199\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-47.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-150\"\/><\/div><\/figure>\n\n\n\n<p id=\"uaf691464\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"R8ToH\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Msim0\">\u53d8\u6362<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-48.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1002\" height=\"421\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-48.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-151\"  sizes=\"auto, (max-width: 1002px) 100vw, 1002px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"YxKf9\" class=\"wp-block-code\"><code>import torch\n\nt=torch.randperm(8)\nt_reshape = torch.reshape(t,(2,4))\nprint(\"t:{}\\nt_reshape:\\n{}\".format(t,t_reshape))\n\nt&#91;0]=1024\nprint(\"\\nt:{}\\nt_reshape:\\n{}\".format(t,t_reshape))\nprint(\"t.data \u5185\u5b58\u5730\u5740\uff1a{}\",format(id(t.data)))\nprint(\"t_reshape.data \u5185\u5b58\u5730\u5740\uff1a{}\",format(id(t_reshape.data)))<\/code><\/pre>\n\n\n\n<p id=\"u261d2495\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-49.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"458\" height=\"215\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-49.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-152\"  sizes=\"auto, (max-width: 458px) 100vw, 458px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u261d2495\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"GV9U5\"\/>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-50.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1020\" height=\"540\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-50.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-153\"  sizes=\"auto, (max-width: 1020px) 100vw, 1020px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"dBhr3\" class=\"wp-block-code\"><code>import torch\nt = torch.rand((2,3,4))\nt_transpose = torch.transpose(t,1,2)\n\nprint(\"t shape:\\n{}\\nt_transpose shape:\\n{}\".format(t.shape,t_transpose.shape))<\/code><\/pre>\n\n\n\n<p id=\"u1ac81f23\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-51.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"189\" height=\"83\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-51.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-154\"\/><\/div><\/figure>\n\n\n\n<p id=\"u1ac81f23\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"q9Pg4\"\/>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-52-1024x503.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"503\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-52-1024x503.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-155\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"YE4ur\" class=\"wp-block-code\"><code>import torch\nt = torch.rand((1,2,3,1))\n\nt_sq = torch.squeeze(t)\nt_0 = torch.squeeze(t,0)\nt_1 = torch.squeeze(t,1)\n\nprint(t.shape)\nprint(t_sq.shape)\nprint(t_0.shape)\nprint(t_1.shape)<\/code><\/pre>\n\n\n\n<p id=\"u25726a02\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-53.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"204\" height=\"81\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-53.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-156\"\/><\/div><\/figure>\n\n\n\n<p id=\"u25726a02\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"VLyEh\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"X6JWj\">\u5f20\u91cf\u7684\u6570\u5b66\u8fd0\u7b97<\/h2>\n\n\n\n<p id=\"uce8bd969\">\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0b\u6709\u54ea\u4e9b\u8fd0\u7b97\uff0c\u7528\u5230\u7684\u65f6\u5019\u968f\u65f6\u67e5\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pWq5e\">\u52a0\u51cf\u4e58\u9664<\/h3>\n\n\n\n<pre id=\"n5Q2d\" class=\"wp-block-code\"><code>torch.add()\ntorch.addcdiv()\ntorch.addcmul()\ntorch.sub()\ntorch.div()\ntorch.mul()<\/code><\/pre>\n\n\n\n<p id=\"u40e544ba\">\u7531\u4e8e\u6211\u4eec\u7ecf\u5e38\u7528\u5230 \u4e58\u9879\u56e0\u5b50x\u5f20\u91cf+\u5f20\u91cf\uff0c\u6240\u4ee5\u4e3a\u4e86\u7b80\u6d01\u4ee3\u7801\uff0c\u5728add\u4e2d\u5185\u7f6e\u4e86\u8fd9\u6837\u7684\u8ba1\u7b97\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-54-1024x470.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"470\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-54-1024x470.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-157\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"lEkU5\" class=\"wp-block-code\"><code>import torch\n\nt_0 = torch.randn((3,3))\nt_1 = torch.ones_like(t_0)\nt_add = torch.add(t_0, 10, t_1)\n\nprint(\"t_0:\\n{}\\nt_1:\\n{}\\nt_add:\\n{}\".format(t_0,t_1,t_add))<\/code><\/pre>\n\n\n\n<p id=\"uca7f3250\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-55.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"303\" height=\"236\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-55.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-158\"  sizes=\"auto, (max-width: 303px) 100vw, 303px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uca7f3250\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"GJfl5\">\u5bf9\u6570\uff0c\u6307\u6570\uff0c\u5e42\u51fd\u6570<\/h3>\n\n\n\n<pre id=\"vOnuj\" class=\"wp-block-code\"><code>torch.log(input, out=None)\ntorch.log10(input, out=None)\ntorch.log2(input, out=None)\ntorch.exp(input, out=None)\ntorch.pow()<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"TDMQb\">\u4e09\u89d2\u51fd\u6570<\/h3>\n\n\n\n<pre id=\"eqCIi\" class=\"wp-block-code\"><code>torch.abs(input, out=None)\ntorch.acos(input, out=None)\ntorch.cosh(input, out=None)\ntorch.cos(input, out=None)\ntorch.asin(input, out=None)\ntorch.atan(input, out=None)\ntorch.atan2(input, other, out=None)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"YpAy0\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"FL9ML\">\u7ebf\u6027\u56de\u5f52<\/h2>\n\n\n\n<p id=\"ua01895a5\">\u7ebf\u6027\u56de\u5f52\u662f\u5206\u6790\u4e00\u4e2a\u53d8\u91cf\u4e0e\u53e6\u4e00\uff08\u591a\uff09\u4e2a\u53d8\u91cf\u4e4b\u95f4\u5173\u7cfb\u7684\u65b9\u6cd5<\/p>\n\n\n\n<p id=\"u08d0ee0c\">\u56e0\u53d8\u91cf\uff1ay \u81ea\u53d8\u91cf\uff1ax \u5173\u7cfb\uff1a\u7ebf\u6027<\/p>\n\n\n\n<p id=\"u78495908\">y = wx + b<\/p>\n\n\n\n<p id=\"u32f0d620\">\u5206\u6790\uff1a\u6c42\u89e3w\uff0cb<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"HcieT\"\/>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-56.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"980\" height=\"504\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-56.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-159\"  sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ud6beab6f\">\u4ee5\u4e0b\u662f\u4ee3\u7801\u5b9e\u73b0\uff1a<\/p>\n\n\n\n<pre id=\"fO8pw\" class=\"wp-block-code\"><code>import torch\nimport matplotlib.pyplot as plt\ntorch.manual_seed(10)\n\nlr = 0.05  # \u5b66\u4e60\u7387    20191015\u4fee\u6539\n\n# \u521b\u5efa\u8bad\u7ec3\u6570\u636e\nx = torch.rand(20, 1) * 10  # x data (tensor), shape=(20, 1)\ny = 2*x + (5 + torch.randn(20, 1))  # y data (tensor), shape=(20, 1)\n\n# \u6784\u5efa\u7ebf\u6027\u56de\u5f52\u53c2\u6570\nw = torch.randn((1), requires_grad=True)\nb = torch.zeros((1), requires_grad=True)\n\nfor iteration in range(1000):\n\n    # \u524d\u5411\u4f20\u64ad\n    wx = torch.mul(w, x)\n    y_pred = torch.add(wx, b)\n\n    # \u8ba1\u7b97 MSE loss\n    loss = (0.5 * (y - y_pred) ** 2).mean()\n\n    # \u53cd\u5411\u4f20\u64ad\n    loss.backward()\n\n    # \u66f4\u65b0\u53c2\u6570\n    b.data.sub_(lr * b.grad)\n    w.data.sub_(lr * w.grad)\n\n    # \u6e05\u96f6\u5f20\u91cf\u7684\u68af\u5ea6  \n    w.grad.zero_()\n    b.grad.zero_()\n\n    # \u7ed8\u56fe\n    if iteration % 20 == 0:\n\n        plt.scatter(x.data.numpy(), y.data.numpy())\n        plt.plot(x.data.numpy(), y_pred.data.numpy(), 'r-', lw=5)\n        plt.text(2, 20, 'Loss=%.4f' % loss.data.numpy(), fontdict={'size': 20, 'color':  'red'})\n        plt.xlim(1.5, 10)\n        plt.ylim(8, 28)\n        plt.title(\"Iteration: {}\\nw: {} b: {}\".format(iteration, w.data.numpy(), b.data.numpy()))\n        plt.pause(0.5)\n\n        if loss.data.numpy() &lt; 1:\n            break\n<\/code><\/pre>\n\n\n\n<p id=\"u69b4a8d8\">\u7ed3\u679c\uff1a\u5728\u8fed\u4ee380\u6b21\u540eloss\u964d\u5230\u4e861\u4ee5\u4e0b<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-57.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"567\" height=\"455\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-57.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-160\"  sizes=\"auto, (max-width: 567px) 100vw, 567px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"sRdpJ\"\/>\n\n\n\n<p>\u8fd9\u90e8\u5206\u8fd8\u4e0d\u662f\u5f88\u61c2\uff0c\u56de\u5934\u8865\u5145\u4e00\u4e0b\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"KyqXg\">\u8ba1\u7b97\u56fe\u4e0e\u52a8\u6001\u56fe\u673a\u5236<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h4898\">\u8ba1\u7b97\u56fe<\/h2>\n\n\n\n<p id=\"u3be58e41\">\u8ba1\u7b97\u56fe\u662f\u7528\u6765<strong>\u63cf\u8ff0\u8fd0\u7b97<\/strong>\u7684\u6709\u5411\u65e0\u73af\u56fe<\/p>\n\n\n\n<p id=\"uf5cd3571\">\u8ba1\u7b97\u56fe\u6709\u4e24\u4e2a\u4e3b\u8981\u5143\u7d20\uff1a<strong>\u7ed3\u70b9<\/strong>\uff08Node\uff09 <strong>\u8fb9<\/strong>\uff08Edge\uff09<\/p>\n\n\n\n<p id=\"u10d97387\">\u7ed3\u70b9\u8868\u793a<strong>\u6570\u636e<\/strong>\uff0c\u5982\u5411\u91cf\u3001\u77e9\u9635\u3001\u5f20\u91cf<\/p>\n\n\n\n<p id=\"u919cf85a\">\u8fb9\u8868\u793a<strong>\u8fd0\u7b97<\/strong>\uff0c\u5982\u52a0\u51cf\u4e58\u9664\u5377\u79ef\u7b49<\/p>\n\n\n\n<p id=\"ud3daf8cb\">\u7528\u8ba1\u7b97\u56fe\u8868\u793a\uff1ay = (x + w) * (w + 1)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-58.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"465\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-58.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-161\"  sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"Oa9b2\"\/>\n\n\n\n<p id=\"u6ca01cbb\">\u4f7f\u7528\u8ba1\u7b97\u56fe\u4e0d\u4ec5\u4ec5\u53ef\u4ee5\u8ba9\u8ba1\u7b97\u53d8\u5f97\u7b80\u6d01\uff0c\u66f4\u91cd\u8981\u7684\u4f5c\u7528\u662f\u4f7f\u5f97<strong>\u68af\u5ea6\u6c42\u5bfc<\/strong>\u53d8\u5f97\u66f4\u52a0\u65b9\u4fbf<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-59.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1020\" height=\"484\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-59.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-162\"  sizes=\"auto, (max-width: 1020px) 100vw, 1020px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u625a50f7\">\u7528\u4ee3\u7801\u6765\u9a8c\u8bc1\u4e00\u4e0b\uff1a<\/p>\n\n\n\n<pre id=\"yBU6O\" class=\"wp-block-code\"><code>import torch\n\nw = torch.tensor(&#91;1.], requires_grad=True)\nx = torch.tensor(&#91;2.], requires_grad=True)\n\na = torch.add(w, x)     # retain_grad()\nb = torch.add(w, 1)\ny = torch.mul(a, b)\n\ny.backward()\nprint(w.grad)<\/code><\/pre>\n\n\n\n<p id=\"u7f6c4699\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-60.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"28\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-60.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-163\"\/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"lzV0G\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"xxH91\">is_leaf<\/h3>\n\n\n\n<p id=\"u2e9b519e\">\u5728\u4e4b\u524d\u5b66\u4e60\u5f20\u91cf\u65f6\uff0cTensor\u4e2d\u6709is_leaf\u7684\u53d8\u91cf\uff0c\u7528\u6765\u6307\u793a\u5f20\u91cf\u662f\u5426\u4e3a\u53f6\u5b50\u7ed3\u70b9\u3002<\/p>\n\n\n\n<p id=\"u08540ab9\">\u540c\u65f6\u975e\u53f6\u5b50\u7ed3\u70b9\u5728\u53cd\u5411\u4f20\u64ad\u540e\uff0c\u5176\u68af\u5ea6\u4f1a\u88ab\u91ca\u653e\u6389\u3002<\/p>\n\n\n\n<p id=\"ued5c66c6\">\u5982\u679c\u60f3\u8981\u4fdd\u7559\u975e\u53f6\u5b50\u7ed3\u70b9\u7684\u68af\u5ea6\uff0c\u9700\u8981\u52a0\u4e0aretain_grad( )<\/p>\n\n\n\n<pre id=\"YJefJ\" class=\"wp-block-code\"><code># \u67e5\u770b\u53f6\u5b50\u7ed3\u70b9\nprint(\"is_leaf:\\n\", w.is_leaf, x.is_leaf, a.is_leaf, b.is_leaf, y.is_leaf)\n\n# \u67e5\u770b\u68af\u5ea6\nprint(\"gradient:\\n\", w.grad, x.grad, a.grad, b.grad, y.grad)<\/code><\/pre>\n\n\n\n<p id=\"u5986a91c\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-61.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"347\" height=\"75\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-61.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-164\"  sizes=\"auto, (max-width: 347px) 100vw, 347px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"ZzGS4\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"RCp39\">grad_fn<\/h3>\n\n\n\n<p id=\"ud3f90981\">\u7528\u6765\u8bb0\u5f55\u521b\u5efa\u8be5\u5f20\u91cf\u65f6\u6240\u7528\u7684\u65b9\u6cd5\uff08\u51fd\u6570\uff09\uff0c\u7528\u6765\u5728\u53cd\u5411\u4f20\u64ad\u65f6\u8ba1\u7b97\u68af\u5ea6\u3002<\/p>\n\n\n\n<p id=\"ud7123028\">y.grad_fn =&lt;MulBackward0&gt;<\/p>\n\n\n\n<p id=\"u3f4af511\">a.grad_fn =&lt;AddBackward0&gt;<\/p>\n\n\n\n<p id=\"u68588579\">b.grad_fn =&lt;AddBackward0&gt;<\/p>\n\n\n\n<pre id=\"zsCYu\" class=\"wp-block-code\"><code># \u67e5\u770b grad_fn\nprint(\"grad_fn:\\n\", w.grad_fn, x.grad_fn, a.grad_fn, b.grad_fn, y.grad_fn)<\/code><\/pre>\n\n\n\n<p id=\"u005b51f5\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-62-1024x36.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"36\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-62-1024x36.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-165\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"aqPAU\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"kQpFo\">\u52a8\u6001\u56fe<\/h2>\n\n\n\n<p id=\"u664f9454\">\u6839\u636e\u8ba1\u7b97\u56fe\u642d\u5efa\u65b9\u5f0f\uff0c\u53ef\u5c06\u8ba1\u7b97\u56fe\u5206\u4e3a\u52a8\u6001\u56fe\u548c\u9759\u6001\u56fe<\/p>\n\n\n\n<p id=\"ua352edf7\">\u52a8\u6001\u56fe\uff1a\u8fd0\u7b97\u4e0e\u642d\u5efa\u540c\u65f6\u8fdb\u884c\uff08Pytorch\uff09<\/p>\n\n\n\n<p id=\"udc6021a8\">\u9759\u6001\u56fe\uff1a\u5148\u642d\u5efa\u56fe\uff0c\u540e\u8fd0\u7b97\uff08TensorFlow\uff09<\/p>\n\n\n\n<p id=\"u47b7d0b5\">Pytorch\u662f\u5728\u6bcf\u4e00\u6b65\u8ba1\u7b97\u7684\u540c\u65f6\u642d\u5efa\u56fe<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-64.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"654\" height=\"365\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-64.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-167\"  sizes=\"auto, (max-width: 654px) 100vw, 654px\" \/><\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p id=\"u98d134b1\">\u800cTensorflow\u662f\u5148\u642d\u5efa\u597d\u6240\u6709\u7684\u56fe\uff0c\u518d\u4f20\u5165\u6570\u636e\u8fdb\u884c\u8ba1\u7b97<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"NBmYM\"\/>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"Eyvvv\">Autograd\u4e0e\u903b\u8f91\u56de\u987e<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"g5MpB\">torch.autograd\u2014\u81ea\u52a8\u6c42\u5bfc\u7cfb\u7edf<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"I8gau\">backward<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-65.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"330\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-65.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-168\"  sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">grad<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-66.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1017\" height=\"404\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-66.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-173\"  sizes=\"auto, (max-width: 1017px) 100vw, 1017px\" \/><\/div><\/figure>\n\n\n\n<pre id=\"kbrSC\" class=\"wp-block-code\"><code>import torch\n\nx = torch.tensor(&#91;3.],requires_grad=True)\ny = torch.pow(x,2)\n\n#\u521b\u5efa\u56fe\uff0c\u4e3a\u4e86\u8ba1\u7b97\u4e8c\u9636\u5bfc\u6570\ngrad_1 = torch.autograd.grad(y,x,create_graph=True)\nprint(\"grad_1:\",grad_1)\n\ngrad_2 = torch.autograd.grad(grad_1&#91;0],x)\nprint(\"grad_2:\",grad_2)<\/code><\/pre>\n\n\n\n<p id=\"uc60af8cc\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-67.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"378\" height=\"42\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-67.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-174\"  sizes=\"auto, (max-width: 378px) 100vw, 378px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"hqqIe\"\/>\n\n\n\n<p id=\"u7de70d74\">autograd\u5c0f\u8d34\u58eb\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u68af\u5ea6\u4e0d\u81ea\u52a8\u6e05\u96f6<\/li>\n<\/ol>\n\n\n\n<pre id=\"FYm3W\" class=\"wp-block-code\"><code>import torch\n\nw = torch.tensor(&#91;1.], requires_grad=True)\nx = torch.tensor(&#91;2.], requires_grad=True)\n\nfor i in range(4):\n    a = torch.add(w, x)     # retain_grad()\n    b = torch.add(w, 1)\n    y = torch.mul(a, b)\n\n    y.backward()\n\n    print(\"w.grad:\", w.grad)\n\n    #w.grad.zero_()<\/code><\/pre>\n\n\n\n<p id=\"u90989cac\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-68.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"181\" height=\"83\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-68.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-175\"\/><\/div><\/figure>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u4f9d\u8d56\u4e8e\u53f6\u5b50\u7ed3\u70b9\u7684\u7ed3\u70b9\uff0crequires_grad\u9ed8\u8ba4\u4e3aTrue<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-69.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"693\" height=\"513\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-69.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-176\"  sizes=\"auto, (max-width: 693px) 100vw, 693px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ud1fd7780\">\u53ef\u4ee5\u7528\u8fd9\u5f20\u56fe\u6765\u7406\u89e3\uff0ca\u7684\u68af\u5ea6\u4f9d\u8d56\u4e8ex\u7684\u68af\u5ea6\uff0c\u6240\u4ee5\u5176requires_grad\u9ed8\u8ba4\u4e3aTrue<\/p>\n\n\n\n<pre id=\"a8LPT\" class=\"wp-block-code\"><code>import torch\n\nw = torch.tensor(&#91;1.], requires_grad=True)\nx = torch.tensor(&#91;2.], requires_grad=True)\n\na = torch.add(w, x)     # retain_grad()\nb = torch.add(w, 1)\ny = torch.mul(a, b)\n\n\nprint(a.requires_grad,b.requires_grad,y.requires_grad)<\/code><\/pre>\n\n\n\n<p id=\"uc34a1b09\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-70.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"129\" height=\"31\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-70.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-177\"\/><\/div><\/figure>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u53f6\u5b50\u7ed3\u70b9\u4e0d\u53ef\u6267\u884cin-place\uff08\u539f\u5730\u64cd\u4f5c\uff09<\/li>\n<\/ol>\n\n\n\n<p id=\"u5f32e8c9\">\u5728\u524d\u5411\u4f20\u64ad\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u8bb0\u5f55\u53f6\u5b50\u7ed3\u70b9\u7684\u5730\u5740\uff1b\u5728\u53cd\u5411\u4f20\u64ad\u8fc7\u7a0b\u4e2d\uff0c\u6839\u636e\u5730\u5740\u53bb\u5bfb\u627e\u53f6\u5b50\u7ed3\u70b9\u7684\u503c\uff0c\u5982\u679c\u8fd9\u4e2a\u65f6\u5019\u53f6\u5b50\u7ed3\u70b9\u539f\u5730\u64cd\u4f5c\u5bfc\u81f4\u503c\u7684\u6539\u53d8\uff0c\u5c31\u4e0e\u524d\u5411\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u503c\u4e0d\u540c\uff0c\u8fd9\u5c31\u4f1a\u4ea7\u751f\u9519\u8bef\u3002<\/p>\n\n\n\n<pre id=\"ESqSn\" class=\"wp-block-code\"><code>import torch\n\nw = torch.tensor(&#91;1.], requires_grad=True)\nx = torch.tensor(&#91;2.], requires_grad=True)\n\na = torch.add(w, x)     # retain_grad()\nb = torch.add(w, 1)\ny = torch.mul(a, b)\n\nw = torch.add_(1)<\/code><\/pre>\n\n\n\n<p id=\"u000d7dc2\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-71.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"692\" height=\"326\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-71.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-178\"  sizes=\"auto, (max-width: 692px) 100vw, 692px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"zEgIN\">\u903b\u8f91\u56de\u5f52<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"WFB3p\">\u4ec0\u4e48\u662f\u903b\u8f91\u56de\u5f52\u6a21\u578b\uff1f<\/h3>\n\n\n\n<p id=\"uf7b0741e\">\u903b\u8f91\u56de\u5f52\u6a21\u578b\u662f\u7ebf\u6027\u7684\u4e8c\u5206\u7c7b\u6a21\u578b<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-72.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"455\" height=\"312\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-72.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-179\"  sizes=\"auto, (max-width: 455px) 100vw, 455px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u7daa7c54\">sigmoid\u51fd\u6570\uff1a\u5c06\u8f93\u5165\u7684\u6570\u636e\u6620\u5c04\u52300\u52301\u4e4b\u95f4<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-73.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"518\" height=\"376\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-73.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-180\"  sizes=\"auto, (max-width: 518px) 100vw, 518px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uf561c7f5\">\u4e8c\u5206\u7c7b\uff1a\u8bbe\u7f6e\u4e00\u4e2a\u9608\u503c\u4e3a0.5\uff0c\u5f53y&lt;0.5\u4e3a0\uff0c\u5f53y&gt;=0.5\u4e3a1<\/p>\n\n\n\n<p id=\"uf053cde3\">\u7ebf\u6027\uff1a<\/p>\n\n\n\n<p id=\"u9046d2aa\">\u903b\u8f91\u56de\u5f52\u6a21\u578b\u76f8\u5f53\u4e8e\u5728\u7ebf\u6027\u56de\u5f52\u6a21\u578b\u7684\u57fa\u7840\u4e0a\u589e\u52a0\u4e86\u4e00\u4e2a\u6fc0\u6d3b\u51fd\u6570<\/p>\n\n\n\n<p id=\"u272e7c40\">\u5373\u4fbf\u6ca1\u6709\u8fd9\u4e2a\u6fc0\u6d3b\u51fd\u6570\uff0c\u7ebf\u6027\u56de\u5f52\u6a21\u578b\u4e5f\u53ef\u4ee5\u505a\u4e8c\u5206\u7c7b\u95ee\u9898\uff0c\u7b49\u4ef7\u4e8ey&gt;0\u5219\u4e3a1\uff0cy&lt;0\u4e3a0<\/p>\n\n\n\n<p id=\"uf7e5bcf7\">\u4f46\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u63cf\u8ff0\u5206\u7c7b\u81ea\u4fe1\u5ea6\uff0c\u6211\u4eec\u5c06\u503c\u6620\u5c04\u523001\u4e4b\u95f4\uff0c\u7b26\u5408\u6982\u7387\u53d6\u503c<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"AVBHo\"\/>\n\n\n\n<p id=\"u409aa81f\">\u903b\u8f91\u56de\u5f52\u4e5f\u53ef\u4ee5\u53eb \u5bf9\u6570\u51e0\u7387\u56de\u5f52<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-74.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"554\" height=\"505\" data-original=\"http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-74.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-181\"  sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" id=\"xW6ER\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ByuTR\">\u6a21\u578b\u8bad\u7ec3\u8fc7\u7a0b<\/h3>\n\n\n\n<pre id=\"BgFyQ\" class=\"wp-block-code\"><code>import torch\nimport torch.nn as nn\nimport torch.optim as optim\nimport matplotlib.pyplot as plt\nimport numpy as np\ntorch.manual_seed(10)\n\n# ============================ step 1\/5 \u751f\u6210\u6570\u636e ============================\nsample_nums = 100\nmean_value = 1.7\nbias = 1\nn_data = torch.ones(sample_nums, 2)\nx0 = torch.normal(mean_value * n_data, 1) + bias      # \u7c7b\u522b0 \u6570\u636e shape=(100, 2)\ny0 = torch.zeros(sample_nums)                         # \u7c7b\u522b0 \u6807\u7b7e shape=(100, 1)\nx1 = torch.normal(-mean_value * n_data, 1) + bias     # \u7c7b\u522b1 \u6570\u636e shape=(100, 2)\ny1 = torch.ones(sample_nums)                          # \u7c7b\u522b1 \u6807\u7b7e shape=(100, 1)\ntrain_x = torch.cat((x0, x1), 0)\ntrain_y = torch.cat((y0, y1), 0)\n# ============================ step 2\/5 \u9009\u62e9\u6a21\u578b ============================\n#\u5b9a\u4e49\u6a21\u578b\u7684\u7c7b\nclass LR(nn.Module):\n    def __init__(self):\n        super(LR, self).__init__()\n        self.features = nn.Linear(2, 1)\n        self.sigmoid = nn.Sigmoid()\n        \n#\u5b9a\u4e49\u597d\u524d\u5411\u4f20\u64ad\n    def forward(self, x):\n        x = self.features(x)\n        x = self.sigmoid(x)\n        return x\n\nlr_net = LR()   # \u5b9e\u4f8b\u5316\u903b\u8f91\u56de\u5f52\u6a21\u578b\n\n# ============================ step 3\/5 \u9009\u62e9\u635f\u5931\u51fd\u6570 ============================\nloss_fn = nn.BCELoss()\n\n# ============================ step 4\/5 \u9009\u62e9\u4f18\u5316\u5668   ============================\nlr = 0.01  # \u5b66\u4e60\u7387\noptimizer = optim.SGD(lr_net.parameters(), lr=lr,momentum=0.9)  # \u968f\u673a\u68af\u5ea6\u4e0b\u964d\u4f18\u5316\u5668\n\n# ============================ step 5\/5 \u6a21\u578b\u8bad\u7ec3 ============================\nfor iteration in range(1000):\n\n    # \u524d\u5411\u4f20\u64ad\n    y_pred = lr_net(train_x)\n\n    # \u8ba1\u7b97 loss\n    loss = loss_fn(y_pred.squeeze(), train_y)\n\n    # \u53cd\u5411\u4f20\u64ad\n    loss.backward()\n\n    # \u66f4\u65b0\u53c2\u6570\n    optimizer.step()\n\n    # \u6e05\u7a7a\u68af\u5ea6\n    optimizer.zero_grad()\n\n    # \u7ed8\u56fe\n    if iteration % 20 == 0:\n\n        mask = y_pred.ge(0.5).float().squeeze()  # \u4ee50.5\u4e3a\u9608\u503c\u8fdb\u884c\u5206\u7c7b\n        correct = (mask == train_y).sum()  # \u8ba1\u7b97\u6b63\u786e\u9884\u6d4b\u7684\u6837\u672c\u4e2a\u6570\n        acc = correct.item() \/ train_y.size(0)  # \u8ba1\u7b97\u5206\u7c7b\u51c6\u786e\u7387\n\n        plt.scatter(x0.data.numpy()&#91;:, 0], x0.data.numpy()&#91;:, 1], c='r', label='class 0')\n        plt.scatter(x1.data.numpy()&#91;:, 0], x1.data.numpy()&#91;:, 1], c='b', label='class 1')\n\n        w0, w1 = lr_net.features.weight&#91;0]\n        w0, w1 = float(w0.item()), float(w1.item())\n        plot_b = float(lr_net.features.bias&#91;0].item())\n        plot_x = np.arange(-6, 6, 0.1)\n        plot_y = (-w0 * plot_x - plot_b) \/ w1\n\n        plt.xlim(-5, 7)\n        plt.ylim(-7, 7)\n        plt.plot(plot_x, plot_y)\n\n        plt.text(-5, 5, 'Loss=%.4f' % loss.data.numpy(), fontdict={'size': 20, 'color': 'red'})\n        plt.title(\"Iteration: {}\\nw0:{:.2f} w1:{:.2f} b: {:.2f} accuracy:{:.2%}\".format(iteration, w0, w1, plot_b, acc))\n        plt.legend()\n\n        plt.show()\n        plt.pause(0.5)\n\n        if acc &gt; 0.99:\n            break\n<\/code><\/pre>\n\n\n\n<p id=\"u289fcebe\">\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.s7arry.top\/wp-content\/uploads\/2025\/05\/image-75.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"546\" height=\"459\" 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":98,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-88","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-10"],"_links":{"self":[{"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/posts\/88","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/comments?post=88"}],"version-history":[{"count":11,"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/posts\/88\/revisions"}],"predecessor-version":[{"id":183,"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/posts\/88\/revisions\/183"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/media\/98"}],"wp:attachment":[{"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/media?parent=88"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/categories?post=88"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.s7arry.top\/index.php\/wp-json\/wp\/v2\/tags?post=88"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}