{"id":588,"date":"2021-01-11T17:23:43","date_gmt":"2021-01-11T08:23:43","guid":{"rendered":"http:\/\/hituji1012.xsrv.jp\/?p=588"},"modified":"2026-08-01T13:53:40","modified_gmt":"2026-08-01T04:53:40","slug":"265","status":"publish","type":"post","link":"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/","title":{"rendered":"DeepLearning\u3067\u753b\u50cf\u5206\u985e\u3092\u5b66\u7fd2\u3055\u305b\u308b"},"content":{"rendered":"\n<p><strong data-rich-text-format-boundary=\"true\"><\/strong><\/p>\n<p>\u3059\u3067\u306b\u5b66\u7fd2\u6e08\u307f\u306eAI\uff08Deep Learning\uff09\u3092\u4f7f\u3048\u3070\u3001\u3059\u3050AI\u3092\u4f53\u9a13\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3001\u305f\u3044\u3066\u3044\u306f\u3053\u306e\u65b9\u6cd5\u3067\u753b\u50cf\u5206\u985e\u3092\u3059\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u5b66\u7fd2\u6e08\u307f\u306e\u5206\u985e\u9805\u76ee\u304c\u56fa\u5b9a\u3055\u308c\u3066\u3066\u3001\u81ea\u5206\u306e\u5206\u985e\u3057\u305f\u3044\u3082\u306e\u304c\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u4f8b\u5916\u3068\u3057\u3066\u3001\u4f53\u306e\u9854\u3084\u59ff\u52e2\u3092\u691c\u77e5\u3059\u308bAI\u306f\u691c\u77e5\u3057\u305f\u3044\u3082\u306e\u304c\u540c\u3058\u306a\u306e\u3067\u3001\u5b66\u7fd2\u6e08\u307f\u306eAI\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001\u81ea\u5206\u3067\u30c7\u30fc\u30bf\u3092\u7528\u610f\u3057\u3066\u3001\u305d\u306e\u30c7\u30fc\u30bf\u3067\u5b66\u7fd2\u3059\u308b\u65b9\u6cd5\u3092\u7fd2\u5f97\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u96e3\u3057\u3044\u6570\u5b66\u306e\u77e5\u8b58\u306f\u3067\u304d\u308b\u3060\u3051\u7701\u3044\u3066\u3067\u304d\u308b\u3060\u3051\u7c21\u5358\u306b\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"xBza758qOD\"><p><a href=\"https:\/\/www.tetsumag.com\/2022\/09\/19\/281\/\">\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u4f5c\u696d\u306b\u3064\u3044\u3066 \u6ce8\u610f\u70b9\u3084\u5de5\u592b\u70b9\u3001\u5916\u6ce8\u30b3\u30b9\u30c8\u3092\u89e3\u8aac<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u4f5c\u696d\u306b\u3064\u3044\u3066 \u6ce8\u610f\u70b9\u3084\u5de5\u592b\u70b9\u3001\u5916\u6ce8\u30b3\u30b9\u30c8\u3092\u89e3\u8aac&#8221; &#8212; \u3066\u3064\u307e\u3050\" src=\"https:\/\/www.tetsumag.com\/2022\/09\/19\/281\/embed\/#?secret=rIuprdXuMy#?secret=xBza758qOD\" data-secret=\"xBza758qOD\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_38 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><svg style=\"fill: #444444;color:#444444\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #444444;color:#444444\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E7%94%BB%E5%83%8F%E5%88%86%E9%A1%9E%E3%81%AE%E5%AD%A6%E7%BF%92%E3%82%B9%E3%83%86%E3%83%83%E3%83%97\" title=\"\u753b\u50cf\u5206\u985e\u306e\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7\">\u753b\u50cf\u5206\u985e\u306e\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E6%9C%80%E5%88%9D%E3%81%AB%E7%94%BB%E5%83%8F%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E9%9B%86%E3%82%81%E3%82%8B\" title=\"\u6700\u521d\u306b\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u96c6\u3081\u308b\">\u6700\u521d\u306b\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u96c6\u3081\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%82%A2%E3%83%8E%E3%83%86%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3%E3%83%A9%E3%83%99%E3%83%AB%E4%BB%98%E3%81%91%E3%82%92%E3%81%99%E3%82%8B\" title=\"\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3(\u30e9\u30d9\u30eb\u4ed8\u3051)\u3092\u3059\u308b\">\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3(\u30e9\u30d9\u30eb\u4ed8\u3051)\u3092\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#AI%E3%83%A2%E3%83%87%E3%83%AB%E3%82%92%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80\" title=\"AI\u30e2\u30c7\u30eb\u3092\u8aad\u307f\u8fbc\u3080\">AI\u30e2\u30c7\u30eb\u3092\u8aad\u307f\u8fbc\u3080<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E7%94%BB%E5%83%8F%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80\" title=\"\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\">\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%83%8F%E3%82%A4%E3%83%91%E3%83%BC%E3%83%91%E3%83%A9%E3%83%A1%E3%83%BC%E3%82%BF%E3%82%92%E6%B1%BA%E3%82%81%E3%81%A6%E5%AD%A6%E7%BF%92\" title=\"\u30cf\u30a4\u30d1\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6c7a\u3081\u3066\u5b66\u7fd2\">\u30cf\u30a4\u30d1\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6c7a\u3081\u3066\u5b66\u7fd2<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E7%B2%BE%E5%BA%A6%E3%82%92%E7%A2%BA%E8%AA%8D\" title=\"\u7cbe\u5ea6\u3092\u78ba\u8a8d\">\u7cbe\u5ea6\u3092\u78ba\u8a8d<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E8%BB%A2%E7%A7%BB%E5%AD%A6%E7%BF%92\" title=\"\u8ee2\u79fb\u5b66\u7fd2\">\u8ee2\u79fb\u5b66\u7fd2<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E8%BB%A2%E7%A7%BB%E5%AD%A6%E7%BF%92%E3%82%92%E4%BD%BF%E3%81%86%E3%83%A1%E3%83%AA%E3%83%83%E3%83%88\" title=\"\u8ee2\u79fb\u5b66\u7fd2\u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8\">\u8ee2\u79fb\u5b66\u7fd2\u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E5%AE%9F%E9%9A%9B%E3%81%AB%E5%AD%A6%E7%BF%92%E3%81%97%E3%81%A6%E3%81%BF%E3%82%8B\" title=\"\u5b9f\u969b\u306b\u5b66\u7fd2\u3057\u3066\u307f\u308b\">\u5b9f\u969b\u306b\u5b66\u7fd2\u3057\u3066\u307f\u308b<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%83%87%E3%83%BC%E3%82%BF\" title=\"\u30c7\u30fc\u30bf\">\u30c7\u30fc\u30bf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%81%AE%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF\" title=\"\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f\">\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%83%87%E3%83%BC%E3%82%BF%E3%81%AE%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF\" title=\"\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\">\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f<\/a><ul class='ez-toc-list-level-4'><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#transforms%E3%82%92%E5%AE%9A%E7%BE%A9\" title=\"transforms\u3092\u5b9a\u7fa9\">transforms\u3092\u5b9a\u7fa9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#datasets%E3%82%92%E5%AE%9A%E7%BE%A9\" title=\"datasets\u3092\u5b9a\u7fa9\">datasets\u3092\u5b9a\u7fa9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#dataloader%E3%82%92%E5%AE%9A%E7%BE%A9\" title=\"dataloader\u3092\u5b9a\u7fa9\">dataloader\u3092\u5b9a\u7fa9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%81%9D%E3%81%AE%E4%BB%96\" title=\"\u305d\u306e\u4ed6\">\u305d\u306e\u4ed6<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%83%A2%E3%83%87%E3%83%AB%E3%81%AE%E8%AA%BF%E6%95%B4\" title=\"\u30e2\u30c7\u30eb\u306e\u8abf\u6574\">\u30e2\u30c7\u30eb\u306e\u8abf\u6574<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#loss%E9%96%A2%E6%95%B0%E3%80%81%E6%9C%80%E9%81%A9%E5%8C%96%E9%96%A2%E6%95%B0%E3%81%AE%E8%A8%AD%E5%AE%9A\" title=\"loss\u95a2\u6570\u3001\u6700\u9069\u5316\u95a2\u6570\u306e\u8a2d\u5b9a\">loss\u95a2\u6570\u3001\u6700\u9069\u5316\u95a2\u6570\u306e\u8a2d\u5b9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E5%AD%A6%E7%BF%92%E5%87%A6%E7%90%86\" title=\"\u5b66\u7fd2\u51e6\u7406\">\u5b66\u7fd2\u51e6\u7406<\/a><ul class='ez-toc-list-level-4'><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E5%AD%A6%E7%BF%92%E9%96%A2%E6%95%B0%E3%82%92%E5%AE%9A%E7%BE%A9\" title=\"\u5b66\u7fd2\u95a2\u6570\u3092\u5b9a\u7fa9\">\u5b66\u7fd2\u95a2\u6570\u3092\u5b9a\u7fa9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E9%96%A2%E6%95%B0%E3%82%92%E5%AE%9F%E8%A1%8C\" title=\"\u95a2\u6570\u3092\u5b9f\u884c\">\u95a2\u6570\u3092\u5b9f\u884c<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%83%86%E3%82%B9%E3%83%88%E3%83%87%E3%83%BC%E3%82%BF%E3%81%A7%E7%A2%BA%E8%AA%8D\" title=\"\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3067\u78ba\u8a8d\">\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3067\u78ba\u8a8d<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/#%E3%81%BE%E3%81%A8%E3%82%81\" title=\"\u307e\u3068\u3081\">\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E7%94%BB%E5%83%8F%E5%88%86%E9%A1%9E%E3%81%AE%E5%AD%A6%E7%BF%92%E3%82%B9%E3%83%86%E3%83%83%E3%83%97\"><\/span>\u753b\u50cf\u5206\u985e\u306e\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u307e\u305a\u306f\u3001\u5b66\u7fd2\u306e\u30b9\u30c6\u30c3\u30d7\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<div>\n<div style=\"height: 15px;\"><span style=\"background: #91D8AC; padding: 10px 10px; border-radius: 10px; color: #ffffff; font-weight: bold; margin-left: 10px;\">\u5b66\u7fd2\u306e\u30b9\u30c6\u30c3\u30d7<\/span><\/div>\n<div style=\"padding: 30px 15px 10px; border-radius: 5px; border: 8px solid #91D8AC;\">\n<ul>\n<li>\u30c7\u30fc\u30bf\u3092\u96c6\u3081\u308b<\/li>\n<li>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\uff08\u30e9\u30d9\u30eb\u4ed8\uff09\u3092\u3059\u308b<\/li>\n<li>AI\u306e\u30e2\u30c7\u30eb\u3092\u8aad\u307f\u8fbc\u3080<\/li>\n<li>\u753b\u50cf\u3092\u8aad\u307f\u8fbc\u3080<\/li>\n<li>\u30cf\u30a4\u30d1\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6c7a\u3081\u3066\u5b66\u7fd2<\/li>\n<li>\u7cbe\u5ea6\u78ba\u8a8d<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%E6%9C%80%E5%88%9D%E3%81%AB%E7%94%BB%E5%83%8F%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E9%9B%86%E3%82%81%E3%82%8B\"><\/span>\u6700\u521d\u306b\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u96c6\u3081\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6700\u521d\u306b\u3059\u308b\u3053\u3068\u306f\u30c7\u30fc\u30bf\u3092\u96c6\u3081\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u30b9\u30de\u30d5\u30a9\u3084\u30cd\u30c3\u30c8\u3092\u4f7f\u3063\u3066\u3072\u305f\u3059\u3089\u30c7\u30fc\u30bf\u3092\u96c6\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001\u72ac\u3068\u732b\u306e\u753b\u50cf\u3092<a href=\"https:\/\/pixabay.com\/ja\/\" target=\"_blank\" rel=\"noopener noreferrer\">pixabay<\/a>\u304b\u308960\uff08\u5b66\u7fd2\u7528 50 \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u7528 10\uff09\u305a\u3064\u96c6\u3081\u307e\u3057\u305f\u3002<\/p>\n<div class=\"clearfix responbox50\">\n<div class=\"lbox\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-803\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/dog-1246610_640-300x198.jpg\" alt=\"\" width=\"300\" height=\"198\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/dog-1246610_640-300x198.jpg 300w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/dog-1246610_640-600x396.jpg 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/dog-1246610_640.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div>\n<div class=\"rbox\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-804\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/cat-2310384_640-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/cat-2310384_640-300x200.jpg 300w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/cat-2310384_640-600x399.jpg 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/cat-2310384_640.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%E3%82%A2%E3%83%8E%E3%83%86%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3%E3%83%A9%E3%83%99%E3%83%AB%E4%BB%98%E3%81%91%E3%82%92%E3%81%99%E3%82%8B\"><\/span>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3(\u30e9\u30d9\u30eb\u4ed8\u3051)\u3092\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30c7\u30fc\u30bf\u3092\u96c6\u3081\u305f\u3089\u3001\u6b21\u306f\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\uff08\u30e9\u30d9\u30eb\u4ed8\uff09\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u4f5c\u696d\u304c\u4e00\u756a\u624b\u9593\u304c\u304b\u304b\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001\u4e8c\u7a2e\u985e\u309260\u3064\u305a\u3064\u306a\u306e\u3067\u3001\u5168\u7136\u5927\u5909\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u6570\u767e\u7a2e\u985e\u3092\u6570\u5343\u679a\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u3068\u306a\u308b\u3068\u5927\u5909\u3067\u3059\u3002<\/p>\n<p>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u6b21\u306e\u3088\u3046\u306b\u30d5\u30a9\u30eb\u30c0\u3054\u3068\u306b\u5206\u3051\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-808 size-full\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/ml7_1-e1609745093551.png\" alt=\"\" width=\"525\" height=\"254\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_1-e1609745093551.png 525w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_1-e1609745093551-300x145.png 300w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/p>\n<p>train\u306f\u5b66\u7fd2\u7528\u3067\u3001val\u306f\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u7528\u3067\u3059\u3002<\/p>\n<p>\u30d5\u30a9\u30eb\u30c0\u306b\u306f\u5206\u985e\u3057\u305f\u3044\u82f1\u540d(cat, dog\u7b49)\u3092\u5165\u308c\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"AI%E3%83%A2%E3%83%87%E3%83%AB%E3%82%92%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80\"><\/span>AI\u30e2\u30c7\u30eb\u3092\u8aad\u307f\u8fbc\u3080<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u753b\u50cf\u3092\u5206\u985e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308bAI\u30e2\u30c7\u30eb\u3067\u4ee3\u8868\u7684\u306a\u3082\u306e\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>pytorch\u3067\u306f\u3044\u304f\u3064\u304b\u306e\u30e2\u30c7\u30eb\u306f1\u884c\u3067\u8aad\u307f\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>model\u306e\u7a2e\u985e\u306fpytorch\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e<a href=\"https:\/\/pytorch.org\/docs\/stable\/torchvision\/models.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u3053\u3053<\/a>\u3092\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-810\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/ml7_2-256x300.png\" alt=\"\" width=\"256\" height=\"300\" \/><\/p>\n<p>\u307e\u305a\u4e00\u756a\u6700\u521d\u306b\u899a\u3048\u308b\u3068\u826f\u3044\u30e2\u30c7\u30eb\u306fVGG\u3068\u3044\u3046\u7a2e\u985e\u3067\u3059\u304c\u3001\u307e\u305a\u306f\u3001\u8272\u3005\u306a\u7a2e\u985e\u304c\u3042\u308b\u306e\u3060\u3068\u3044\u3046\u3053\u3068\u3092\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u30e2\u30c7\u30eb\u306f\u3001\u4ed6\u306e\u4f4d\u7f6e\u691c\u51fa\u3084\u30bb\u30de\u30f3\u30c6\u30a3\u30c3\u30af\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u3001\u90e8\u5206\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E7%94%BB%E5%83%8F%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80\"><\/span>\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>pytorch\u3067\u306e\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u306ftransforms, datasets, dataloaders\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>\u6a5f\u80fd<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>transforms<\/th>\n<td style=\"text-align: center;\">\u30c7\u30fc\u30bf\u3092\u30ea\u30b5\u30a4\u30ba\u306a\u3069\u52a0\u5de5\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<th>datasets<\/th>\n<td style=\"text-align: center;\">\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3093\u3067\u5168\u30c7\u30fc\u30bf\u3092\u7ba1\u7406<\/td>\n<\/tr>\n<tr>\n<th>dataloaders<\/th>\n<td style=\"text-align: center;\">datasets\u306e\u30c7\u30fc\u30bf\u3092\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u306b\u5fdc\u3058\u3066\u3001\u53d6\u308a\u51fa\u3059<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<br \/>\n<img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-811 size-full\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/ml7_3.png\" alt=\"\" width=\"525\" height=\"297\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_3.png 525w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_3-300x170.png 300w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/p>\n<p>\u5148\u7a0b\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u6642\u306e\u30d5\u30a9\u30eb\u30c0\u4f53\u7cfb\u306b\u3057\u3066\u304a\u3051\u3070\u3001\u6c7a\u307e\u3063\u305f\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3067\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%8F%E3%82%A4%E3%83%91%E3%83%BC%E3%83%91%E3%83%A9%E3%83%A1%E3%83%BC%E3%82%BF%E3%82%92%E6%B1%BA%E3%82%81%E3%81%A6%E5%AD%A6%E7%BF%92\"><\/span>\u30cf\u30a4\u30d1\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6c7a\u3081\u3066\u5b66\u7fd2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u753b\u50cf\u5206\u985e\u3067\u306fAI\u306e\u30e2\u30c7\u30eb\u3092\u3069\u308c\u306b\u3059\u308b\u304b\uff1f\u306a\u3069\u3001\u4eba\u304c\u7cbe\u5ea6\u3092\u4e0a\u3052\u308b\u305f\u3081\u306b\u3044\u304f\u3064\u304b\u8abf\u6574\u3059\u308b\u9805\u76ee\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>AI\u30e2\u30c7\u30eb\u4ee5\u5916\u306f\u3001<a href=\"https:\/\/pytorch.org\/docs\/stable\/optim.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u6700\u9069\u5316\u95a2\u6570<\/a>\u3092\u3069\u308c\u3092\u4f7f\u3046\u304b\uff1f\u305d\u306e\u5b66\u7fd2\u7387\u3092\u3069\u3046\u3059\u308b\u304b\uff1f\u304c\u4e00\u756a\u91cd\u8981\u306a\u9805\u76ee\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u9805\u76ee<\/th>\n<th>\u5099\u8003<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>\u30d0\u30c3\u30c1\u6570<\/th>\n<td style=\"text-align: center;\">\u5168\u4f53\u306e\u30c7\u30fc\u30bf\u304b\u3089\u3069\u308c\u3060\u3051\u5c0f\u51fa\u3057\u3057\u306b\u3057\u3066\u5b66\u7fd2\u3059\u308b\u304b\u306e\u6570<br \/>\nGPU\u306e\u30e1\u30e2\u30ea\u306b\u3088\u3063\u3066\u306f\u5c11\u306a\u304f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b<\/td>\n<\/tr>\n<tr>\n<th>\u6700\u9069\u5316\u95a2\u6570<\/th>\n<td style=\"text-align: center;\">\u3069\u306e\u6700\u9069\u5316\u95a2\u6570\u3092\u4f7f\u3046\u304b\u3002adam\u3001SGD\u3001Adadelta\u7b49\u3002<\/td>\n<\/tr>\n<tr>\n<th>\u6700\u9069\u5316\u95a2\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n<td style=\"text-align: center;\">\u5b66\u7fd2\u7387\u306a\u3069\u306e\u6700\u9069\u5316\u95a2\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf<\/td>\n<\/tr>\n<tr>\n<th>\u30a8\u30dd\u30c3\u30af\u6570<\/th>\n<td style=\"text-align: center;\">\u5b66\u7fd2\u30c7\u30fc\u30bf\u5168\u90e8\u3092\u4f55\u56de\u7e70\u308a\u8fd4\u3057\u3066\u5b66\u7fd2\u3059\u308b\u304b<br \/>\n1\u30a8\u30dd\u30c3\u30af=\u5168\u5b66\u7fd2\u30c7\u30fc\u30bf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4ed6\u306b\u3082\u7cbe\u5ea6Up\u306e\u305f\u3081\u306b\u8272\u3005\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u6700\u521d\u306f\u3053\u306e4\u3064\u3092\u8abf\u6574\u3059\u308b\u3068\u3053\u308d\u304b\u3089\u59cb\u3081\u308b\u3068\u826f\u3044\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3060\u3051\u3067\u3082\u5341\u5206\u306a\u7cbe\u5ea6\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E7%B2%BE%E5%BA%A6%E3%82%92%E7%A2%BA%E8%AA%8D\"><\/span>\u7cbe\u5ea6\u3092\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5b66\u7fd2\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u5b66\u7fd2\u30c7\u30fc\u30bf\u3068\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30c7\u30fc\u30bf\u306e\u7cbe\u5ea6\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u30aa\u30fc\u30d0\u30fc\u3001\u30a2\u30f3\u30c0\u30fc\u30d5\u30a3\u30c3\u30c6\u30a3\u30f3\u30b0\u3092\u78ba\u8a8d\u3057\u3064\u3064\u6c42\u3081\u3066\u3044\u308b\u7cbe\u5ea6\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<p>\u7cbe\u5ea6\u7d50\u679c\u304b\u3089\u30e2\u30c7\u30eb\u3092\u5909\u3048\u305f\u308a\u3001\u30c7\u30fc\u30bf\u3092\u5897\u3084\u3057\u305f\u308a\u3001\u30cf\u30a4\u30d1\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8abf\u6574\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%BB%A2%E7%A7%BB%E5%AD%A6%E7%BF%92\"><\/span>\u8ee2\u79fb\u5b66\u7fd2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u8ee2\u79fb\u5b66\u7fd2\u306f<strong>\u3059\u3067\u306b\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u5b66\u7fd2\u3057\u305f\u3001\u5b66\u7fd2\u6e08\u307f\u306eAI\u30e2\u30c7\u30eb\u3092\u4f7f\u3063\u3066\u3001\u81ea\u5206\u306e\u30c7\u30fc\u30bf\u3067\u5b66\u7fd2\u3057\u76f4\u3059<\/strong>\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u5206\u985e\u3057\u3066\u3044\u308b\u9805\u76ee\u3001\u6570\u304c\u9055\u3063\u3066\u3082\u5168\u7136OK\u3067\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E8%BB%A2%E7%A7%BB%E5%AD%A6%E7%BF%92%E3%82%92%E4%BD%BF%E3%81%86%E3%83%A1%E3%83%AA%E3%83%83%E3%83%88\"><\/span>\u8ee2\u79fb\u5b66\u7fd2\u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8ee2\u79fb\u5b66\u7fd2\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div>\n<div style=\"height: 15px;\"><span style=\"background: #91D8AC; padding: 10px 10px; border-radius: 10px; color: #ffffff; font-weight: bold; margin-left: 10px;\">\u30e1\u30ea\u30c3\u30c8<\/span><\/div>\n<div style=\"padding: 30px 15px 10px; border-radius: 5px; border: 8px solid #91D8AC;\">\n<ul>\n<li>\u5b66\u7fd2\u30c7\u30fc\u30bf\u304c\u5c11\u306a\u304f\u3066\u3082\u3042\u308b\u7a0b\u5ea6\u7cbe\u5ea6\u304c\u51fa\u305b\u308b<\/li>\n<li>\u6700\u7d42\u5c64\u4ee5\u5916\u306f\u5b66\u7fd2\u3057\u306a\u3044\u306e\u3067\u3001\u9ad8\u901f\u306b\u5b66\u7fd2\u3067\u304d\u308b\u306e\u3067\u5b66\u7fd2\u6642\u9593\u304c\u77ed\u304f\u6e08\u3080<\/li>\n<li>\u5206\u985e\u4ee5\u5916\u306b\u3082\u3001\u4f4d\u7f6e\u691c\u51fa\u306a\u3069\u3067\u3082\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p>\u3082\u3046\u5c11\u3057\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u4f7f\u3046\u3001VGG\u30e2\u30c7\u30eb\u306e\u69cb\u6210\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-813\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/ml7_4-e1609759573403.png\" alt=\"\" width=\"500\" height=\"595\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_4-e1609759573403.png 1222w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_4-e1609759573403-600x714.png 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_4-e1609759573403-252x300.png 252w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_4-e1609759573403-861x1024.png 861w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_4-e1609759573403-768x914.png 768w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_4-e1609759573403-940x1118.png 940w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>\u3053\u308c\u306f\u4eca\u306f\u7406\u89e3\u3067\u304d\u306a\u304f\u3066\u826f\u3044\u3067\u3059\u304c\u3001AI\u30e2\u30c7\u30eb\u3067\u3042\u308b\u51e6\u7406\u306e\u6d41\u308c\u306e\u30b5\u30de\u30ea\u30fc\u3067\u3059\u3002<\/p>\n<p>\u9752\u3044\u3068\u3053\u308d\u3067\u306f\u3001\u753b\u50cf\u306e\u30a8\u30c3\u30b8\u3084\u8cea\u611f\u306a\u3069\u7279\u5fb4\u3092\u6349\u3048\u3066\u3001\u30aa\u30ec\u30f3\u30b8\u8272\u306e\u3068\u3053\u308d\u3067\u5206\u985e\u3067\u304d\u308b\u3088\u3046\u306b1\u6b21\u5143\u306e\u914d\u5217\u306e\u6570\u3092\u5c11\u306a\u304f\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u308f\u304b\u308a\u306b\u304f\u3044\u306e\u3067\u3001\u56f3\u306b\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u3067\u3059\u3002<\/p>\n<p>\u6a2a\u5411\u304d\u306b\u5909\u66f4\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u753b\u50cf\u30c7\u30fc\u30bf\u306eRGB(3ch)\u3001\u9ad8\u3055\u3001\u5e45\u306e\u7acb\u65b9\u4f53\u306e\u5f62\u3092\u5909\u66f4\u3057\u3066\u884c\u304d\u3001\u6700\u7d42\u7684\u306b\u5206\u985e\u6570\u306e1\u6b21\u5143\u914d\u5217\u306b\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-814 size-full\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/ml7_5.png\" alt=\"\" width=\"525\" height=\"193\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_5.png 525w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/ml7_5-300x110.png 300w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/p>\n<p>\u3059\u3067\u306b\u5b66\u7fd2\u3057\u305fAI\u3067\u306f\u9752\u3044\u7b87\u6240\u3067\u753b\u50cf\u306e\u7279\u5fb4\u3092\u62bd\u51fa\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3066\u3044\u308b\u306e\u3067\u3001\u30aa\u30ec\u30f3\u30b8\u8272\u306e\u7b87\u6240\u3060\u3051\u3092\u81ea\u5206\u306e\u30c7\u30fc\u30bf\u306b\u5408\u3046\u3088\u3046\u306b\u5b66\u7fd2\u3057\u76f4\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u304c\u3068\u3066\u3082\u3046\u307e\u304f\u6a5f\u80fd\u3059\u308b\u306e\u3067\u3001\u3088\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u65b9\u6cd5\u306b\u306a\u308a\u3001\u4eca\u56de\u3082\u4f7f\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%AE%9F%E9%9A%9B%E3%81%AB%E5%AD%A6%E7%BF%92%E3%81%97%E3%81%A6%E3%81%BF%E3%82%8B\"><\/span>\u5b9f\u969b\u306b\u5b66\u7fd2\u3057\u3066\u307f\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5b66\u7fd2\u307e\u3067\u306e\u6d41\u308c\u304c\u63b4\u3081\u305f\u3068\u3053\u308d\u3067\u3001\u5b9f\u969b\u306b\u7528\u610f\u3057\u305f\u30c7\u30fc\u30bf\u3092\u5b66\u7fd2\u3057\u3066\u3001\u30aa\u30ea\u30b8\u30ca\u30eb\u306e\u753b\u50cf\u5206\u985eAI\u3092\u4f5c\u3063\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u30b3\u30fc\u30c9\u91cf\u304c\u591a\u304f\u306a\u308b\u306e\u3067\u3001\u96e3\u3057\u304f\u611f\u3058\u308b\u5834\u5408\u306f\u3001\u3068\u308a\u3042\u3048\u305a\u306f\u52d5\u304b\u305b\u308b\u3088\u3046\u306b\u306a\u308b\u3068\u3053\u308d\u304b\u3089\u59cb\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u52d5\u304b\u305b\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u304b\u3089\u3001\u4e00\u3064\u4e00\u3064\u7406\u89e3\u3057\u3066\u3044\u304f\u3053\u3068\u304c\u3068\u3066\u3082\u5927\u4e8b\u3067\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%87%E3%83%BC%E3%82%BF\"><\/span>\u30c7\u30fc\u30bf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30c7\u30fc\u30bf\u3092\u7528\u610f\u3057\u3066\u3001\u30b3\u30fc\u30c9\u3068\u540c\u3058\u30d5\u30a9\u30eb\u30c0\u306b\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-825\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/ml7_7.png\" alt=\"\" width=\"400\" height=\"158\" \/><\/p>\n<p>\u6700\u5f8c\u306b\u78ba\u8a8d\u3059\u308b\u30c7\u30fc\u30bf\u306b\u306f\u3001\u4e0b\u8a18\u4e8c\u3064\u306e\u30c7\u30fc\u30bf\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<div class=\"clearfix responbox50 smart50\">\n<div class=\"lbox\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-816\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/test_dog-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/test_dog-300x200.jpg 300w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/test_dog-600x399.jpg 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/12\/test_dog.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div>\n<div class=\"rbox\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-817\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/test_cat-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" \/><\/p>\n<\/div>\n<\/div>\n<p>\u30c7\u30fc\u30bf\u3068\u30b3\u30fc\u30c9\u542b\u3080\u30d5\u30a1\u30a4\u30eb\u3092\u6dfb\u4ed8(<a href=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/ml7.zip\" target=\"_blank\" rel=\"noopener noreferrer\">ml7<\/a>)\u3057\u307e\u3059\u306e\u3067\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%81%AE%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF\"><\/span>\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u307e\u305a\u3001\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<p>torch\u3068\u3064\u3044\u3066\u3044\u308b\u306e\u304cpytorch\u95a2\u4fc2\u3067\u3059\u304c\u3001\u4eca\u56de\u306f\u3001\u30c7\u30fc\u30bf\u8aad\u307f\u8fbc\u307f\u3084AI\u30e2\u30c7\u30eb\u306b\u95a2\u4fc2\u3059\u308b\u3082\u306e\u3082\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\">import torch\r\nimport torch.nn as nn\r\nimport torch.optim as optim\r\nimport torchvision\r\nfrom torchvision import datasets, models, transforms\r\n\r\nimport numpy as np\r\nfrom tqdm import tqdm\r\nfrom PIL import Image\r\n<\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%87%E3%83%BC%E3%82%BF%E3%81%AE%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF\"><\/span>\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30c7\u30fc\u30bf\u8aad\u307f\u8fbc\u307f\u306e\u30b3\u30fc\u30c9\u306f\u3001\u307b\u307c\u6c7a\u307e\u308a\u6587\u53e5\u3067\u3059\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"transforms%E3%82%92%E5%AE%9A%E7%BE%A9\"><\/span>transforms\u3092\u5b9a\u7fa9<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u8aad\u307f\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\u3092\u5b66\u7fd2\u6e08\u307f\u30e2\u30c7\u30eb\u306b\u5408\u308f\u305b\u3066\u30ea\u30b5\u30a4\u30ba(224\u00d7224)\u3001pytorch\u3067\u4f7f\u3048\u308bTensor\u306b\u5909\u66f4\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3042\u3068\u306f\u3001\u5b66\u7fd2\u6e08\u307f\u30e2\u30c7\u30eb\u3092\u4f7f\u3046\u306e\u3067\u3001\u305d\u308c\u306b\u5408\u308f\u305b\u305f\u6b63\u898f\u5316\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\">size = (224, 224)\r\ndata_transforms = {\r\n    'train': transforms.Compose([\r\n        transforms.Resize(size),\r\n        transforms.ToTensor(),\r\n        transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225])\r\n    ]),\r\n    'val': transforms.Compose([\r\n        transforms.Resize(size),\r\n        transforms.ToTensor(),\r\n        transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225])\r\n    ]),\r\n}\r\n<\/pre>\n<p>\u3053\u308c\u304c\u4e00\u756a\u30b7\u30f3\u30d7\u30eb\u306a\u65b9\u6cd5\u3067\u3059\u304c\u3001\u5b66\u7fd2\u6642\u306b\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u53cd\u8ee2\u3057\u305f\u308a\u3001\u5207\u308a\u53d6\u3063\u305f\u308a\u3059\u308b\u3053\u3068\u3067\u5c11\u306a\u3044\u30c7\u30fc\u30bf\u3067\u3082\u7cbe\u5ea6\u304c\u51fa\u308b\u3088\u3046\u306a\u5de5\u592b\u3092\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u62e1\u5f35\u3068\u3044\u3046\u65b9\u6cd5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"datasets%E3%82%92%E5%AE%9A%E7%BE%A9\"><\/span>datasets\u3092\u5b9a\u7fa9<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u5148\u3068\u3001transforms\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\">train_data_dir = 'dataset\/train'\r\nval_data_dir = 'dataset\/val'\r\n\r\nimage_datasets = {\r\n    'train': torchvision.datasets.ImageFolder(train_data_dir, transform=data_transforms['train']),\r\n    'val': torchvision.datasets.ImageFolder(val_data_dir, transform=data_transforms['val'])\r\n}\r\n<\/pre>\n<h4><span class=\"ez-toc-section\" id=\"dataloader%E3%82%92%E5%AE%9A%E7%BE%A9\"><\/span>dataloader\u3092\u5b9a\u7fa9<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>datasets\u3092\u6e21\u3057\u3066dataloaders\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n<p>\u5f15\u6570\u306ebatch_size\u304c\u30c7\u30fc\u30bf\u3092\u3069\u308c\u3060\u3051\u7d30\u304b\u304f\u5206\u3051\u3066\u5b66\u7fd2\u3059\u308b\u304b\u306e\u6570\u5b57\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>train\u306ebatch_size=10\u306f\u3001\u4eca\u56de\u306e100\u3042\u308b\u30c7\u30fc\u30bf\u309210\u305a\u3064\u53d6\u308a\u51fa\u3057\u3066\u3044\u304f\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>batch_size(\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba)\u306f16,32\u3068\u304b\u30c7\u30fc\u30bf\u6570\u304c\u591a\u3051\u308c\u3070\u300164\u3068\u304b\u9069\u5f53\u306a\u6570\u5b57\u3067\u826f\u3044\u3067\u3059\u3002<\/p>\n<p>\u30d7\u30e9\u30b9shuffle=True\u3068\u3059\u308b\u3053\u3068\u3067\u3001\u30e9\u30f3\u30c0\u30e0\u306b\u53d6\u308a\u51fa\u3059\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\">dataloaders = {\r\n    'train': torch.utils.data.DataLoader(image_datasets['train'], batch_size=10, shuffle=True),\r\n    'val': torch.utils.data.DataLoader(image_datasets['val'], batch_size=5)\r\n}\r\n\r\n<\/pre>\n<h4><span class=\"ez-toc-section\" id=\"%E3%81%9D%E3%81%AE%E4%BB%96\"><\/span>\u305d\u306e\u4ed6<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u3053\u3053\u3067\u306f\u3001\u30c7\u30fc\u30bf\u306e\u6570\u3068\u5206\u985e\u9805\u76ee\u540d\u3092\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u6570\u306f\u3001\u7cbe\u5ea6\u3084\u30ed\u30b9\u306e\u8a08\u7b97\u306b\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"In\">dataset_sizes = {\r\n    'train': len(image_datasets['train']),\r\n    'val': len(image_datasets['val'])\r\n}\r\n\r\nclass_names = image_datasets['train'].classes\r\nprint('\u5206\u985e\u7a2e\u985e:', class_names)\r\n<\/pre>\n<pre class=\"toolbar:1 lang:default decode:true\" title=\"Out\">\u5206\u985e\u7a2e\u985e: ['cat', 'dog']\r\n<\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%A2%E3%83%87%E3%83%AB%E3%81%AE%E8%AA%BF%E6%95%B4\"><\/span>\u30e2\u30c7\u30eb\u306e\u8abf\u6574<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u307e\u305a\u3001\u5b66\u7fd2\u6e08\u307f\u306eVGG16\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<p>device\u306fGPU\/CPU\u3069\u3061\u3089\u3092\u4f7f\u3046\u304b\u306e\u6587\u5b57\u5217\u3092\u5165\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\"># GPU\/CPU\u304c\u4f7f\u3048\u308b\u304b\u3069\u3046\u304b\u78ba\u8a8d\r\ndevice = torch.device(\"cuda:0\" if torch.cuda.is_available() else \"cpu\")\r\n\r\n# VGG16\u306e\u8aad\u307f\u8fbc\u307f\r\nmodel = models.vgg16(pretrained=True)\r\n<\/pre>\n<p>\u6b21\u306b\u3001VGG16\u306e\u6700\u5f8c\u306e\u5c64\u306e\u307f\u3092\u5b66\u7fd2\u3059\u308b\u3088\u3046\u306b\u5909\u66f4\u3057\u307e\u3059\u3002<\/p>\n<p>\uff0avgg16\u4ee5\u5916\u306eresnet18\u306a\u3069\u4ed6\u306e\u30e2\u30c7\u30eb\u3092\u4f7f\u3046\u5834\u5408\u306f\u30e2\u30c7\u30eb\u306b\u5408\u308f\u305b\u3066\u5909\u66f4\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\"># \u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u56fa\u5b9a\r\nfor param in model.parameters():\r\n    param.requires_grad = False\r\n\r\n# \u6700\u5f8c\u306e\u5168\u7d50\u5408\u5c64\u3092\u56fa\u5b9a\u3057\u306a\u3044\uff1e\u3053\u3053\u3060\u3051\u5b66\u7fd2\u3059\u308b\r\nlast_layer = list(model.children())[-1]\r\nfor param in last_layer.parameters():\r\n    param.requires_grad = True\r\n<\/pre>\n<p>VGG16\u3092\u305d\u306e\u307e\u307e\u4f7f\u3046\u30681000\u7a2e\u985e\u306e\u5206\u985e\u3092\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u3053\u308c\u30922\u7a2e\u985e\u306b\u5909\u66f4\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\"># \u5206\u985e\u6570\u30921000\u304b\u30892\u3064\u306b\u5909\u66f4\r\nnum_ftrs = model.classifier[6].in_features\r\nmodel.classifier[6] = torch.nn.Linear(num_ftrs, len(class_names))\r\nmodel = model.to(device)\r\n\r\n<\/pre>\n<h3><span class=\"ez-toc-section\" id=\"loss%E9%96%A2%E6%95%B0%E3%80%81%E6%9C%80%E9%81%A9%E5%8C%96%E9%96%A2%E6%95%B0%E3%81%AE%E8%A8%AD%E5%AE%9A\"><\/span>loss\u95a2\u6570\u3001\u6700\u9069\u5316\u95a2\u6570\u306e\u8a2d\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u307e\u305a\u3001\u4e88\u6e2c\u5024\u3068\u30e9\u30d9\u30eb\u306e\u5dee\u3067\u3042\u308b\u30ed\u30b9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u304c\u3001\u4eca\u56de\u306e\u5206\u985e\u306f<a href=\"https:\/\/pytorch.org\/docs\/stable\/generated\/torch.nn.CrossEntropyLoss.html?highlight=crossentropy#torch.nn.CrossEntropyLoss\" target=\"_blank\" rel=\"noopener noreferrer\">CrossEntropyLoss<\/a>\u3092\u4f7f\u3048\u3070OK\u3067\u3059\u3002<\/p>\n<p>\u6700\u9069\u5316\u95a2\u6570\u306f\u8272\u3005\u3042\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u306fAdam\u3068\u3044\u3046\u6700\u9069\u5316\u95a2\u6570\u3067\u5b66\u7fd2\u7387\u306f0.0001\u3068\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\"># loss\u3092\u5b9a\u7fa9\r\ncriterion = nn.CrossEntropyLoss()\r\n\r\n# \u8272\u3005\u306a\u6700\u9069\u5316\u95a2\u6570 lr\u304c\u5b66\u7fd2\u7387 0.001 0.0001\u306a\u3069\u3067\u8abf\u6574\r\noptimizer = optim.Adam(model.parameters(), lr=0.0001,)\r\n# optimizer = optim.SGD(model.parameters(), lr=0.001,)\r\n<\/pre>\n<p>\u6700\u9069\u5316\u95a2\u6570\u306f<strong>\u300c\u7dda\u5f62\u56de\u5e30\u3092\u4f7f\u3063\u3066\u3001\u5024\u3092\u4e88\u6e2c\u3059\u308b\u300d<\/strong>\u306e\u8a18\u4e8b\u306e\u52fe\u914d\u52b9\u679c\u6cd5\u3067\u8aac\u660e\u3057\u305f\u3082\u306e\u3068\u601d\u3063\u3066\u8cb0\u3048\u3070\u826f\u3044\u3067\u3059\u3002<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"fzWHcu7fwE\"><p><a href=\"https:\/\/www.tetsumag.com\/2020\/12\/05\/241\/\">\u3010scikit learn\u3011\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010scikit learn\u3011\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046&#8221; &#8212; \u3066\u3064\u307e\u3050\" src=\"https:\/\/www.tetsumag.com\/2020\/12\/05\/241\/embed\/#?secret=ZFsRXYtgtd#?secret=fzWHcu7fwE\" data-secret=\"fzWHcu7fwE\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>\u30ed\u30b9\u5024\u304c\u5c11\u306a\u304f\u306a\u308b\uff1d\u7cbe\u5ea6\u304c\u826f\u304f\u306a\u308b\u3088\u3046\u306b\u8abf\u6574\u3059\u308b\u305f\u3081\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%A6%E7%BF%92%E5%87%A6%E7%90%86\"><\/span>\u5b66\u7fd2\u51e6\u7406<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5b66\u7fd2\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u88c5\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u5b66\u7fd2\u306e\u30eb\u30fc\u30d7\u306f\u3001train\u3068val\u3092\u4ea4\u4e92\u306b\u3001\u6b21\u306e\u6d41\u308c\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<div>\n<div style=\"height: 15px;\"><span style=\"background: #91D8AC; padding: 10px 10px; border-radius: 10px; color: #ffffff; font-weight: bold; margin-left: 10px;\">\u51e6\u7406\u306e\u6d41\u308c<\/span><\/div>\n<div style=\"padding: 30px 15px 10px; border-radius: 5px; border: 8px solid #91D8AC;\">\n<ul>\n<li>dataloaders\u304b\u3089\u753b\u50cf(inputs)\u3068\u30e9\u30d9\u30eb(labels)\u3092\u53d6\u308a\u51fa\u3059<\/li>\n<li>AI\u30e2\u30c7\u30eb\u3067\u4e88\u6e2c\u5024\uff08output\uff09\u3092\u53d6\u5f97<\/li>\n<li>\u4e88\u6e2c\u3068\u30e9\u30d9\u30eb\u306e\u30ed\u30b9\u3092\u8a08\u7b97<\/li>\n<li>train\u6642\u306f\u6700\u9069\u5316\u95a2\u6570\u3067\u5b66\u7fd2\uff08\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u66f4\u65b0\uff09<\/li>\n<li>\u30ed\u30b9\u3068\u7cbe\u5ea6\u3092\u78ba\u8a8d\u3057\u3066\u8868\u793a<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h4><span class=\"ez-toc-section\" id=\"%E5%AD%A6%E7%BF%92%E9%96%A2%E6%95%B0%E3%82%92%E5%AE%9A%E7%BE%A9\"><\/span>\u5b66\u7fd2\u95a2\u6570\u3092\u5b9a\u7fa9<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5b66\u7fd2\u7528\u306e\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\">def train(model, dataloader, otpimizer, criterion, num_epochs, device):\r\n    \"\"\"\r\n    model:\u5b66\u7fd2\u30e2\u30c7\u30eb\r\n    dataloader:\u5b66\u7fd2\u3001\u8a55\u4fa1\u30c7\u30fc\u30bf\u306edataloader\r\n    optimizer:\u6700\u9069\u5316\u95a2\u6570\r\n    crierion:\u30ed\u30b9\u95a2\u6570\r\n    num_epochs:\u5b66\u7fd2\u56de\u6570\r\n    device:CPU\u304bGPU\u304b\r\n    \"\"\"\r\n    best_acc = 0.0\r\n    # \u5b66\u7fd2\u3092\u7e70\u308a\u8fd4\u3059\r\n    for epoch in range(num_epochs):\r\n        # train\u3068val\u3092\u7e70\u308a\u8fd4\u3059\r\n        for phase in ['train', 'val']:\r\n            # \u30e2\u30c7\u30eb\u3092\u5b66\u7fd2\u30e2\u30fc\u30c9\u304b\u8a55\u4fa1\u30e2\u30fc\u30c9\u306b\u5207\u308a\u66ff\u3048\u308b\r\n            if phase == 'train':\r\n                model.train()\r\n            else:\r\n                model.eval()\r\n            \r\n            # \u7cbe\u5ea6\u8a08\u7b97\u7528\r\n            loss_sum = 0.0\r\n            acc_sum = 0.0\r\n            total = 0\r\n\r\n            # \u9032\u6357\u306e\u8868\u793a\r\n            with tqdm(total=len(dataloaders[phase]),unit=\"batch\") as pbar:\r\n                pbar.set_description(f\"Epoch[{epoch}\/{num_epochs}]({phase})\")\r\n                \r\n                # dataloaders\u304b\u3089\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u306b\u5fdc\u3058\u3066\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\r\n                for inputs, labels in dataloaders[phase]:\r\n                    # \u753b\u50cf\u3068\u30e9\u30d9\u30eb\u3092GPU\/CPU\u304b\u5207\u308a\u66ff\u3048\r\n                    inputs = inputs.to(device)\r\n                    labels = labels.to(device)\r\n\r\n                    # \u4e88\u6e2c\r\n                    outputs = model(inputs)\r\n                    _, preds = torch.max(outputs, 1)\r\n                    \r\n                    # \u30ed\u30b9\u7b97\u51fa\r\n                    loss = criterion(outputs, labels)\r\n                    \r\n                    # \u4e88\u6e2c\u3068\u30e9\u30d9\u30eb\u306e\u5dee\u3092\u4f7f\u3063\u3066\u5b66\u7fd2 \r\n                    if phase == 'train':\r\n                        # \u3053\u3053\u306f\u6c7a\u307e\u308a\u6587\u53e5\r\n                        optimizer.zero_grad()\r\n                        loss.backward()\r\n                        optimizer.step()\r\n\r\n                    # \u30ed\u30b9\u3001\u7cbe\u5ea6\u3092\u7b97\u51fa\r\n                    total += inputs.size(0)\r\n                    loss_sum += loss.item() * inputs.size(0)\r\n                    acc_sum += torch.sum(preds == labels.data).item()\r\n                    \r\n                    # \u9032\u6357\u306e\u8868\u793a\r\n                    pbar.set_postfix({\"loss\":loss_sum\/float(total),\"accuracy\":float(acc_sum)\/float(total)})\r\n                    pbar.update(1)\r\n\r\n            # 1\u30a8\u30dd\u30c3\u30af\u3067\u306e\u30ed\u30b9\u3001\u7cbe\u5ea6\u3092\u7b97\u51fa\r\n            epoch_loss = loss_sum \/ dataset_sizes[phase]\r\n            epoch_acc = acc_sum \/ dataset_sizes[phase]\r\n            \r\n            # \u4e00\u756a\u826f\u3044\u5236\u5ea6\u306e\u6642\u306b\u30e2\u30c7\u30eb\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\r\n            if phase == 'val' and epoch_acc &gt; best_acc:\r\n                print(f\"save model epoch:{epoch} loss:{epoch_loss} acc:{epoch_acc}\")\r\n                torch.save(model, 'best_model.pth')\r\n<\/pre>\n<h4><span class=\"ez-toc-section\" id=\"%E9%96%A2%E6%95%B0%E3%82%92%E5%AE%9F%E8%A1%8C\"><\/span>\u95a2\u6570\u3092\u5b9f\u884c<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4eca\u307e\u3067\u5ba3\u8a00\u3057\u3066\u304d\u305fmodel\u306a\u3069\u3092\u5f15\u6570\u306b10\u56de\u5b66\u7fd2\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\">num_epochs = 10\r\ntrain(model, dataloaders, optimizer, criterion, num_epochs, device)\r\n<\/pre>\n<p>\u6b21\u306e\u3088\u3046\u306a\u7d50\u679c\u304c\u51fa\u529b\u3055\u308c\u308c\u3070\u3001\u5b66\u7fd2\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-823 size-full\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/12\/ml7_6.png\" alt=\"\" width=\"1964\" height=\"656\" \/><\/p>\n<p>\u4e88\u6e2c\u5024\u3068\u30e9\u30d9\u30eb\u306e\u5dee\u3067\u3042\u308b\u3001loss\u304c\u4e0b\u304c\u3063\u3066\u3044\u304d\u3001\u7cbe\u5ea6\u304c1=100%\u306b\u8fd1\u3065\u3044\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%86%E3%82%B9%E3%83%88%E3%83%87%E3%83%BC%E3%82%BF%E3%81%A7%E7%A2%BA%E8%AA%8D\"><\/span>\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3067\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4ee5\u4e0b\u306e\u8a18\u4e8b\u306e\u30b3\u30fc\u30c9\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"jiswqp9iw5\"><p><a href=\"https:\/\/www.tetsumag.com\/2020\/12\/05\/68\/\">\u3010DeepLearning\u3011Pytorch\u3092\u4f7f\u3063\u3066\u307f\u3088\u3046<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010DeepLearning\u3011Pytorch\u3092\u4f7f\u3063\u3066\u307f\u3088\u3046&#8221; &#8212; \u3066\u3064\u307e\u3050\" src=\"https:\/\/www.tetsumag.com\/2020\/12\/05\/68\/embed\/#?secret=hb9ggLOBYE#?secret=jiswqp9iw5\" data-secret=\"jiswqp9iw5\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\"># \u4eca\u56de\u5b66\u7fd2\u3057\u305f\u30e2\u30c7\u30eb\u3067\u30c6\u30b9\u30c8\r\nbest_model = torch.load('best_model.pth')\r\n<\/pre>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"\"># \u5bfe\u8c61\u753b\u50cf\r\nfilename = 'test_dog.jpg'\r\n\r\n# \u8aad\u307f\u8fbc\u307f\u753b\u50cf\u3092\u30ea\u30b5\u30a4\u30ba\u3084tensor\u306a\u3069\u306e\u65b9\u306b\u5909\u63db\r\ninput_image = Image.open(filename)\r\npreprocess = transforms.Compose([\r\n    transforms.Resize(224),\r\n    transforms.ToTensor(),\r\n    transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]),\r\n])\r\ninput_tensor = preprocess(input_image)\r\ninput_batch = input_tensor.unsqueeze(0)\r\n\r\n# GPU\u4f7f\u3048\u308b\u5834\u5408\u306fGPU\u3092\u4f7f\u3046\r\nif torch.cuda.is_available():\r\n    input_batch = input_batch.to('cuda')\r\n    best_model.to('cuda')\r\n\r\n# AI\u306e\u5224\u5b9a\r\nwith torch.no_grad():\r\n    output = best_model(input_batch)\r\noutput = torch.nn.functional.softmax(output[0], dim=0)\r\nprint(output.shape)\r\n\r\n# \u51fa\u529b\u7d50\u679c\u304b\u30892\u7a2e\u985e\u306e\u3046\u3061\u3069\u308c\u304b\u3092\u6570\u5024\u3067\u53d6\u5f97\r\noutput = output.to('cpu').detach().numpy().copy()\r\nind = np.argmax(output)\r\nprint(class_names[ind])\r\n<\/pre>\n<p>test_dog.jpg\u306e\u5224\u5b9a\u304c<strong>dog<\/strong>\u3068\u306a\u3063\u3066\u3044\u3066\u3001\u72ac\u732b\u306e\u5224\u5b9a\u304c\u3067\u304d\u308bAI\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u72ac\u732b\u3060\u3051\u3067\u306a\u304f\u3001\u8a66\u3057\u305f\u3044\u30c7\u30fc\u30bf\u3092\u7528\u610f\u3057\u3066\u52d5\u304b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3059\u3067\u306b\u5b66\u7fd2\u6e08\u307f\u306eAI\uff08Deep Learning\uff09\u3092\u4f7f\u3048\u3070\u3001\u3059\u3050AI\u3092\u4f53\u9a13\u3067\u304d\u307e\u3059\u3002 \u305f\u3060\u3001\u305f\u3044\u3066\u3044\u306f\u3053\u306e\u65b9\u6cd5\u3067\u753b\u50cf\u5206\u985e\u3092\u3059\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002 \u5b66\u7fd2\u6e08\u307f\u306e\u5206\u985e\u9805\u76ee\u304c\u56fa\u5b9a\u3055\u308c\u3066\u3066\u3001\u81ea\u5206\u306e\u5206\u985e\u3057\u305f\u3044\u3082\u306e\u304c\u542b\u307e\u308c &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/265\/\"> <span class=\"screen-reader-text\">DeepLearning\u3067\u753b\u50cf\u5206\u985e\u3092\u5b66\u7fd2\u3055\u305b\u308b<\/span> \u3082\u3063\u3068\u8aad\u3080 &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":804,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","_themeisle_gutenberg_block_has_review":false},"categories":[127],"tags":[93,100],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/588"}],"collection":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/comments?post=588"}],"version-history":[{"count":7,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/588\/revisions"}],"predecessor-version":[{"id":15392,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/588\/revisions\/15392"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/media\/804"}],"wp:attachment":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/media?parent=588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/categories?post=588"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/tags?post=588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}