{"id":389,"date":"2020-12-05T08:25:12","date_gmt":"2020-12-04T23:25:12","guid":{"rendered":"http:\/\/hituji1012.xsrv.jp\/?p=389"},"modified":"2026-08-01T13:56:17","modified_gmt":"2026-08-01T04:56:17","slug":"241","status":"publish","type":"post","link":"https:\/\/tetsumag.com\/blog\/2020\/12\/05\/241\/","title":{"rendered":"\u3010scikit learn\u3011\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046"},"content":{"rendered":"\n<p><strong data-rich-text-format-boundary=\"true\"><\/strong><\/p>\n<p>\u6a5f\u68b0\u5b66\u7fd2\u3092\u6700\u521d\u306b\u5b66\u3076\u3068\u304d\u306f\u7dda\u5f62\u56de\u5e30\u304b\u3089\u59cb\u3081\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u4e2d\u5b66\u3067\u7fd2\u3046\u4e0b\u8a18\u306e\u3088\u3046\u306a\uff11\u6b21\u5f0f\u3092\u5fa9\u7fd2\u3059\u308b\u3053\u3068\u3067\u3001\u6a5f\u68b0\u5b66\u7fd2\u306e\u57fa\u790e\u7684\u306a\u8003\u3048\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-452\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear1.jpg\" alt=\"\" width=\"392\" height=\"300\" \/><\/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<p>\u305f\u3060\u3001\u4e2d\u76e4\u4ee5\u964d\u306fpython\u306e\u57fa\u790e\u7684\u306a\u77e5\u8b58\u306f\u5fc5\u8981\u3067\u3059\u306e\u3067\u3001\u95a2\u9023\u8a18\u4e8b\u7b49\u3067\u78ba\u8a8d\u3057\u3064\u3064\u8aad\u307f\u9032\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/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 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title=\"\u5bb6\u306e\u4fa1\u683c\u3092\u4e88\u6e2c\u3059\u308b\u4e8b\u4f8b\u3067\u7dda\u5f62\u56de\u5e30\u3092\u7406\u89e3\u3057\u3088\u3046\">\u5bb6\u306e\u4fa1\u683c\u3092\u4e88\u6e2c\u3059\u308b\u4e8b\u4f8b\u3067\u7dda\u5f62\u56de\u5e30\u3092\u7406\u89e3\u3057\u3088\u3046<\/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\/2020\/12\/05\/241\/#%E6%A9%9F%E6%A2%B0%E5%AD%A6%E7%BF%92%E3%81%AF%E8%BF%91%E4%BC%BC%E5%BC%8F%E3%82%92%E7%AE%97%E5%87%BA%E3%81%99%E3%82%8B\" title=\"\u6a5f\u68b0\u5b66\u7fd2\u306f\u8fd1\u4f3c\u5f0f\u3092\u7b97\u51fa\u3059\u308b\">\u6a5f\u68b0\u5b66\u7fd2\u306f\u8fd1\u4f3c\u5f0f\u3092\u7b97\u51fa\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\/2020\/12\/05\/241\/#%E8%BF%91%E4%BC%BC%E5%BC%8Fy_w_x_b%E3%80%80%E5%90%84%E9%A0%85%E3%81%AE%E8%AA%AC%E6%98%8E\" title=\"\u8fd1\u4f3c\u5f0fy = w * x + b\u3000\u5404\u9805\u306e\u8aac\u660e\">\u8fd1\u4f3c\u5f0fy = w * x + b\u3000\u5404\u9805\u306e\u8aac\u660e<\/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\/2020\/12\/05\/241\/#%E8%BF%91%E4%BC%BC%E5%BC%8F%E3%81%AE%E7%89%B9%E5%BE%B4%E9%87%8Fx%E3%81%8C1%E3%81%A4%E3%81%AE%E5%A0%B4%E5%90%88%E3%82%92%E5%8D%98%E5%9B%9E%E5%B8%B0%E3%80%81%E8%A4%87%E6%95%B0%E3%81%82%E3%82%8B%E5%A0%B4%E5%90%88%E3%81%AF%E9%87%8D%E5%9B%9E%E5%B8%B0%E3%81%A8%E3%81%84%E3%81%86\" title=\"\u8fd1\u4f3c\u5f0f\u306e\u7279\u5fb4\u91cfx\u304c1\u3064\u306e\u5834\u5408\u3092\u5358\u56de\u5e30\u3001\u8907\u6570\u3042\u308b\u5834\u5408\u306f\u91cd\u56de\u5e30\u3068\u3044\u3046\">\u8fd1\u4f3c\u5f0f\u306e\u7279\u5fb4\u91cfx\u304c1\u3064\u306e\u5834\u5408\u3092\u5358\u56de\u5e30\u3001\u8907\u6570\u3042\u308b\u5834\u5408\u306f\u91cd\u56de\u5e30\u3068\u3044\u3046<\/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\/2020\/12\/05\/241\/#%E8%BF%91%E4%BC%BC%E5%BC%8F%E3%81%AEw%E3%82%84b%E3%81%AE%E6%9C%80%E9%81%A9%E3%81%AA%E5%80%A4%E3%82%92%E6%B1%82%E3%82%81%E3%82%8B%E3%81%AB%E3%81%AF%E5%8B%BE%E9%85%8D%E9%99%8D%E4%B8%8B%E6%B3%95%E3%82%92%E4%BD%BF%E3%81%86\" title=\"\u8fd1\u4f3c\u5f0f\u306ew\u3084b\u306e\u6700\u9069\u306a\u5024\u3092\u6c42\u3081\u308b\u306b\u306f\u52fe\u914d\u964d\u4e0b\u6cd5\u3092\u4f7f\u3046\">\u8fd1\u4f3c\u5f0f\u306ew\u3084b\u306e\u6700\u9069\u306a\u5024\u3092\u6c42\u3081\u308b\u306b\u306f\u52fe\u914d\u964d\u4e0b\u6cd5\u3092\u4f7f\u3046<\/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\/2020\/12\/05\/241\/#%E6%9C%80%E9%81%A9%E5%8C%96%E3%82%A2%E3%83%AB%E3%82%B4%E3%83%AA%E3%82%BA%E3%83%A0%E3%81%A8%E3%81%AFloss%E3%82%92%E6%9C%80%E5%B0%8F%E3%81%AB%E3%81%99%E3%82%8B%E3%81%93%E3%81%A8\" title=\"\u6700\u9069\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u306floss\u3092\u6700\u5c0f\u306b\u3059\u308b\u3053\u3068\">\u6700\u9069\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u306floss\u3092\u6700\u5c0f\u306b\u3059\u308b\u3053\u3068<\/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\/2020\/12\/05\/241\/#scikit_learn%E3%81%A8%E3%81%AF%EF%BC%9F\" title=\"scikit learn\u3068\u306f\uff1f\">scikit learn\u3068\u306f\uff1f<\/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\/2020\/12\/05\/241\/#scikit_learn%E3%81%AE%E3%82%A4%E3%83%B3%E3%82%B9%E3%83%88%E3%83%BC%E3%83%AB\" title=\"scikit learn\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\">scikit learn\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/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\/2020\/12\/05\/241\/#scikit_learn%E3%81%A7%E7%B7%9A%E5%BD%A2%E5%9B%9E%E5%B8%B0%E3%83%A2%E3%83%87%E3%83%AB%E3%82%92%E4%BD%9C%E3%81%A3%E3%81%A6%E3%81%BF%E3%82%88%E3%81%86\" title=\"scikit learn\u3067\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046\">scikit learn\u3067\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046<\/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\/2020\/12\/05\/241\/#%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%82%92%E3%82%A4%E3%83%B3%E3%83%9D%E3%83%BC%E3%83%88\" title=\"\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\">\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30dd\u30fc\u30c8<\/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\/2020\/12\/05\/241\/#%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E7%94%A8%E6%84%8F%E3%81%99%E3%82%8B\" title=\"\u30c7\u30fc\u30bf\u3092\u7528\u610f\u3059\u308b\">\u30c7\u30fc\u30bf\u3092\u7528\u610f\u3059\u308b<\/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\/2020\/12\/05\/241\/#%E5%AD%A6%E7%BF%92\" title=\"\u5b66\u7fd2\">\u5b66\u7fd2<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/tetsumag.com\/blog\/2020\/12\/05\/241\/#%E7%A2%BA%E8%AA%8D\" title=\"\u78ba\u8a8d\">\u78ba\u8a8d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/tetsumag.com\/blog\/2020\/12\/05\/241\/#%E6%96%B0%E3%81%97%E3%81%84%E3%83%87%E3%83%BC%E3%82%BF%E3%81%A7%E4%BA%88%E6%B8%AC\" title=\"\u65b0\u3057\u3044\u30c7\u30fc\u30bf\u3067\u4e88\u6e2c\">\u65b0\u3057\u3044\u30c7\u30fc\u30bf\u3067\u4e88\u6e2c<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/tetsumag.com\/blog\/2020\/12\/05\/241\/#%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%B7%9A%E5%BD%A2%E5%9B%9E%E5%B8%B0%E3%81%A8%E3%81%AF%EF%BC%9F\"><\/span>\u7dda\u5f62\u56de\u5e30\u3068\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6a5f\u68b0\u5b66\u7fd2\u306e\u5165\u9580\u3067\u306f\u3001\u7dda\u5f62\u56de\u5e30\u306e\u7406\u89e3\u306f\u5fc5\u9808\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u306f\u3001\u5024\u3092\u4e88\u6e2c\u3092\u3059\u308bAI\u3092\u958b\u767a\u3059\u308b\u30b1\u30fc\u30b9\u3092\u60f3\u5b9a\u3057\u3001\u7dda\u5f62\u56de\u5e30\u3092\u3069\u3046\u6d3b\u7528\u3059\u308b\u306e\u304b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u753b\u50cf\u306e\u7269\u4f53\u691c\u77e5AI\u306a\u3069\u3082\u3001\u3053\u3053\u3067\u306e\u77e5\u8b58\u304c\u30d9\u30fc\u30b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AE%B6%E3%81%AE%E4%BE%A1%E6%A0%BC%E3%82%92%E4%BA%88%E6%B8%AC%E3%81%99%E3%82%8B%E4%BA%8B%E4%BE%8B%E3%81%A7%E7%B7%9A%E5%BD%A2%E5%9B%9E%E5%B8%B0%E3%82%92%E7%90%86%E8%A7%A3%E3%81%97%E3%82%88%E3%81%86\"><\/span>\u5bb6\u306e\u4fa1\u683c\u3092\u4e88\u6e2c\u3059\u308b\u4e8b\u4f8b\u3067\u7dda\u5f62\u56de\u5e30\u3092\u7406\u89e3\u3057\u3088\u3046<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4eca\u56de\u306f\u3001\u5bb6\u306e\u4fa1\u683c\u3092\u4e88\u6e2c\u3059\u308b\u4e8b\u4f8b\u3092\u8003\u3048\u307e\u3059\u3002<\/p>\n<p>\u5192\u982d\u3067\u3082\u51fa\u3057\u307e\u3057\u305f\u304c\u3001\u300c\u5bb6\u306e\u9762\u7a4d\u300d\u3068\u300c\u5bb6\u306e\u4fa1\u683c\u300d\u306e\u30c7\u30fc\u30bf\u3092\u30d7\u30ed\u30c3\u30c8\u3057\u305f\u3082\u306e\u3068\u60f3\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-452\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear1.jpg\" alt=\"\" width=\"392\" height=\"300\" \/><\/p>\n<p>\u307e\u3060\u3001\u4fa1\u683c\u304c\u308f\u304b\u3089\u306a\u3044\u5bb6\u304c\u3042\u3063\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4eca\u304b\u3089\u3001\u305d\u306e\u5bb6\u3092\u8cfc\u5165\u3057\u305f\u3044\u3068\u601d\u3063\u305f\u3068\u304d\u3001\u3067\u304d\u308b\u3060\u3051\u304a\u5f97\u306b\u8cfc\u5165\u3057\u305f\u3044\u3067\u3059\u306d\u3002<\/p>\n<p>\u304a\u5f97\u304b\u3069\u3046\u304b\u306f\u3001\u53c2\u8003\u306b\u3067\u304d\u308b\u4fa1\u683c\u304c\u3042\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u306b\u5bb6\u306e\u4fa1\u683c\u3092\u4e88\u6e2c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%A9%9F%E6%A2%B0%E5%AD%A6%E7%BF%92%E3%81%AF%E8%BF%91%E4%BC%BC%E5%BC%8F%E3%82%92%E7%AE%97%E5%87%BA%E3%81%99%E3%82%8B\"><\/span>\u6a5f\u68b0\u5b66\u7fd2\u306f\u8fd1\u4f3c\u5f0f\u3092\u7b97\u51fa\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u3053\u3046\u3044\u3046\u3068\u304d\u3001\u6a5f\u68b0\u5b66\u7fd2\u306f\u3069\u306e\u3088\u3046\u306a\u3053\u3068\u3092\u884c\u306a\u3063\u3066\u304f\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u624b\u5143\u306b\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306b\u30016\u3064\u30d7\u30ed\u30c3\u30c8\u3055\u308c\u305fx:\u5bb6\u306e\u9762\u7a4d\u3068y:\u5bb6\u306e\u4fa1\u683c\u306e\u30c7\u30fc\u30bf\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u307e\u307e\u3067\u306f\u3001w\u3068b\u304c\u308f\u304b\u3089\u306a\u3044\u306e\u3067\u3001\u8fd1\u4f3c\u5f0f\u304c\u308f\u304b\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-453\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear2.jpg\" alt=\"\" width=\"392\" height=\"300\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear2.jpg 392w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear2-300x230.jpg 300w\" sizes=\"(max-width: 392px) 100vw, 392px\" \/><\/p>\n<p>\u8fd1\u4f3c\u5f0f\u304c\u308f\u304b\u3089\u306a\u3044\u3068\u3001\u4e88\u6e2c\u3057\u305f\u3044\u5bb6\u306e\u9762\u7a4d\u304c\u5206\u304b\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u5bb6\u306e\u4fa1\u683c\u304c\u6c42\u3081\u3089\u308c\u307e\u305b\u3093\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-454\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear3.jpg\" alt=\"\" width=\"392\" height=\"300\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear3.jpg 392w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear3-300x230.jpg 300w\" sizes=\"(max-width: 392px) 100vw, 392px\" \/><\/p>\n<p>\u6a5f\u68b0\u5b66\u7fd2\u3067\u306f\u3001\u3053\u306ew\u3068b\u3092\u6c42\u3081\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E8%BF%91%E4%BC%BC%E5%BC%8Fy_w_x_b%E3%80%80%E5%90%84%E9%A0%85%E3%81%AE%E8%AA%AC%E6%98%8E\"><\/span>\u8fd1\u4f3c\u5f0fy = w * x + b\u3000\u5404\u9805\u306e\u8aac\u660e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e2d\u5b66\u6821\u3067\u306f\u3001y = a * x + b\u3067\u3057\u305f\u304c\u3001\u3053\u3053\u3067\u306f\u3001y = w * x + b\u3067\u3057\u305f\u306d\u3002<\/p>\n<p>\u305d\u308c\u305e\u308c\u3001\u547c\u3073\u65b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>y: \u76ee\u7684\u5909\u6570<br \/>\nx: \u8aac\u660e\u5909\u6570 \/ \u7279\u5fb4\u91cf<br \/>\nw: \u91cd\u307f<br \/>\nb: \u30d0\u30a4\u30a2\u30b9<br \/>\nw, b: \u30d1\u30e9\u30e1\u30fc\u30bf<\/p>\n<p>x\u306f\u7279\u5fb4\u91cf\u3068\u3044\u3046\u65b9\u304c\u591a\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E8%BF%91%E4%BC%BC%E5%BC%8F%E3%81%AE%E7%89%B9%E5%BE%B4%E9%87%8Fx%E3%81%8C1%E3%81%A4%E3%81%AE%E5%A0%B4%E5%90%88%E3%82%92%E5%8D%98%E5%9B%9E%E5%B8%B0%E3%80%81%E8%A4%87%E6%95%B0%E3%81%82%E3%82%8B%E5%A0%B4%E5%90%88%E3%81%AF%E9%87%8D%E5%9B%9E%E5%B8%B0%E3%81%A8%E3%81%84%E3%81%86\"><\/span>\u8fd1\u4f3c\u5f0f\u306e\u7279\u5fb4\u91cfx\u304c1\u3064\u306e\u5834\u5408\u3092\u5358\u56de\u5e30\u3001\u8907\u6570\u3042\u308b\u5834\u5408\u306f\u91cd\u56de\u5e30\u3068\u3044\u3046<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>x\u306e\u7279\u5fb4\u91cf\u304c1\u3064\u306e\u5834\u5408\u3092\u5358\u56de\u5e30\u3068\u3044\u3044\u307e\u3059\u304c\u3001\u8907\u6570\u3042\u308b\u5834\u5408\u306f\u91cd\u56de\u5e30\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n<p>\u5bb6\u306e\u4fa1\u683c\u304c\u9762\u7a4d\u3060\u3051\u3067\u6b63\u78ba\u306b\u6c42\u307e\u308b\u308f\u3051\u306a\u3044\u3088\u3068\u601d\u3063\u305f\u65b9\u306f\u3001\u3053\u306e\u91cd\u56de\u5e30\u3092\u4f7f\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u5bb6\u306e\u9762\u7a4d\u3060\u3051\u3067\u306a\u304f\u3001\u90e8\u5c4b\u6570\u3001\u30ea\u30d3\u30f3\u30b0\u306e\u9762\u7a4d\u306a\u3069\u3067\u3059\u3002<\/p>\n<p>\u91cd\u56de\u5e30\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>$$ y = b + w_1x_1 + &#8230; + w_mx_m $$<\/p>\n<p>\u5358\u56de\u5e30\u304b\u3089\u3001\u7279\u5fb4\u91cfx\u304cm\u500b\u306b\u5897\u3048\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\\(x^2\\)\u3092\u5897\u3084\u3059\u30682\u6b21\u5f0f\u3067\u3059\u304c\u3001\u7279\u5fb4\u91cf\u304c\u5897\u3048\u305f\u3068\u8003\u3048\u3066\u3082\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\\(b\\)\u306f\\(w_0\\)\u3068\u3059\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E8%BF%91%E4%BC%BC%E5%BC%8F%E3%81%AEw%E3%82%84b%E3%81%AE%E6%9C%80%E9%81%A9%E3%81%AA%E5%80%A4%E3%82%92%E6%B1%82%E3%82%81%E3%82%8B%E3%81%AB%E3%81%AF%E5%8B%BE%E9%85%8D%E9%99%8D%E4%B8%8B%E6%B3%95%E3%82%92%E4%BD%BF%E3%81%86\"><\/span>\u8fd1\u4f3c\u5f0f\u306ew\u3084b\u306e\u6700\u9069\u306a\u5024\u3092\u6c42\u3081\u308b\u306b\u306f\u52fe\u914d\u964d\u4e0b\u6cd5\u3092\u4f7f\u3046<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6a5f\u68b0\u304c\u6c7a\u3081\u3066\u304f\u308c\u308bw\u3084b\u306e\u6700\u9069\u306a\u5024\u3068\u306f\u306a\u3093\u3067\u3057\u3087\u3046\uff1f<\/p>\n<p>\u3069\u3046\u3084\u3063\u3066\u6c7a\u3081\u308c\u3070\u826f\u3044\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u305d\u308c\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u300c\u4eca\u3042\u308b\u30c7\u30fc\u30bf\u300d\u3068\u300c1\u6b21\u5f0f\u300d\u306e\u5dee\u304c\u4e00\u756a\u5c0f\u3055\u304f\u306a\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>\u4eca\u3042\u308b\u30c7\u30fc\u30bf\u306f<strong>\u6559\u5e2b\u30c7\u30fc\u30bf<\/strong>\u3068\u3044\u3044\u30011\u6b21\u5f0f\u306a\u3069\u306f<strong>\u30e2\u30c7\u30eb<\/strong>\u3068\u3082\u3044\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-460\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear4.jpg\" alt=\"\" width=\"777\" height=\"333\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear4.jpg 777w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear4-600x257.jpg 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear4-300x129.jpg 300w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear4-768x329.jpg 768w\" sizes=\"(max-width: 777px) 100vw, 777px\" \/><\/p>\n<p>\u6a5f\u68b0\u306b\u306f\u5de6\u3088\u308a\u3001\u53f3\u306e\u3088\u3046\u306b\u306a\u308bw\u3068b\u3092\u6c42\u3081\u3066\u6b32\u3057\u3044\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u306b\u3001\u8d64\u3044\u7dda\u306e\u6559\u5e2b\u30c7\u30fc\u30bf\u3068\u30e2\u30c7\u30eb\u306e\u5dee\u3092\u6700\u5c0f\u306b\u306a\u308bw\u3068b\u3092\u6a5f\u68b0\u306b\u6c42\u3081\u3066\u3082\u3089\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u65b9\u6cd5\u306b\u52fe\u914d\u964d\u4e0b\u6cd5\u3068\u3044\u3046\u3082\u306e\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>\u52fe\u914d\u964d\u4e0b\u6cd5\u3067\u306f\u3001\u6559\u5e2b\u30c7\u30fc\u30bf\u3068\u30e2\u30c7\u30eb\u306e\u5dee\u3092<strong>loss<\/strong>\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u3001loss\u304c\u6700\u5c0f\u306b\u306a\u308b\u3088\u3046\u306aw\u3068b\u3092\u63a2\u3057\u307e\u3059\u3002<\/p>\n<p>loss\u306e\u3053\u3068\u3092<strong>\u640d\u5931\u95a2\u6570<\/strong>\u3068\u3082\u547c\u3073\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u3067\u3042\u308c\u3070\u3001loss\u306b\u306f\u4e00\u822c\u7684\u306b\u4f7f\u308f\u308c\u308b\u3001\u5e73\u5747\u4e8c\u4e57\u8aa4\u5dee\u3067\u8003\u3048\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>$$ loss = ((Y_1-\\hat{Y_1})^2 + (Y_2-\\hat{Y_2})^2 + (Y_3-\\hat{Y_3})^2 + (Y_4-\\hat{Y_4})^2 + (Y_5-\\hat{Y_5})^2 + (Y_6-\\hat{Y_6})^2)\/6 $$<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-483\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear5-3.jpg\" alt=\"\" width=\"777\" height=\"333\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear5-3.jpg 777w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear5-3-600x257.jpg 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear5-3-300x129.jpg 300w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear5-3-768x329.jpg 768w\" sizes=\"(max-width: 777px) 100vw, 777px\" \/><\/p>\n<p>\\( \\hat{Y}\\)\u306f\u30ef\u30a4\u30cf\u30c3\u30c8\u3068\u547c\u3073\u307e\u3059\u30021\u6b21\u5f0f\u306e\u30e2\u30c7\u30eb\u3067\u7b97\u51fa\u3055\u308c\u308bY\u306e\u5024\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306eloss\u306fw\u3084b\u306e\u5024\u306b\u3088\u3063\u3066\u3001\u5927\u304d\u306a\u3063\u305f\u308a\u3001\u5c0f\u3055\u304f\u306a\u3063\u305f\u308a\u3057\u307e\u3059\u306d\u3002<\/p>\n<p>w\u306e\u5909\u5316\u306b\u3088\u308b\u3001loss\u306e\u5909\u5316\u3092\u4e0b\u8a18\u56f3\u3067\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\u6a5f\u68b0\u306f\u3053\u306e\u5c0f\u3055\u304f\u306a\u308b\u3068\u3053\u308d\u3092\u63a2\u3057\u307e\u3059\u3002\u3053\u306e\u904e\u7a0b\u306f\u6a5f\u68b0\u304c\u5b66\u7fd2\u3057\u3066\u3044\u308b\u3068\u3044\u3063\u3066\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-470\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear6.jpg\" alt=\"\" width=\"362\" height=\"344\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear6.jpg 362w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear6-300x285.jpg 300w\" sizes=\"(max-width: 362px) 100vw, 362px\" \/><\/p>\n<p>\u3053\u306e\u3068\u304d\u3001\u5927\u304d\u304f\u52d5\u304b\u3059\u304b\u3001\u5c0f\u3055\u304f\u52d5\u304b\u3059\u304b\u3067\u3001loss\u304c\u6700\u5c0f\u306b\u306a\u3089\u306a\u3044\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3057\u3001\u6700\u5c0f\u306b\u306a\u308b\u307e\u3067\u6642\u9593\u304c\u304b\u304b\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u52d5\u304b\u3059\u91cf\u3092<strong>\u5b66\u7fd2\u7387(learning rate)<\/strong>\u3068\u3044\u3046\u3082\u306e\u3067\u8abf\u6574\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-481\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear7.jpg\" alt=\"\" width=\"747\" height=\"344\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear7.jpg 747w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear7-600x276.jpg 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear7-300x138.jpg 300w\" sizes=\"(max-width: 747px) 100vw, 747px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%9C%80%E9%81%A9%E5%8C%96%E3%82%A2%E3%83%AB%E3%82%B4%E3%83%AA%E3%82%BA%E3%83%A0%E3%81%A8%E3%81%AFloss%E3%82%92%E6%9C%80%E5%B0%8F%E3%81%AB%E3%81%99%E3%82%8B%E3%81%93%E3%81%A8\"><\/span>\u6700\u9069\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u306floss\u3092\u6700\u5c0f\u306b\u3059\u308b\u3053\u3068<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4eca\u56de\u306f\u3001\u52fe\u914d\u964d\u4e0b\u6cd5\u3068\u3044\u3046\u3082\u306e\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u304c\u3001\u3053\u308c\u3092<strong>\u6700\u9069\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/strong>\uff08optimizer\uff09\u3068\u8a00\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ed6\u306b\u3082\u8272\u3005\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u5fc5\u305a\u5b66\u7fd2\u7387\u306f\u8abf\u6574\u3059\u308b\u306e\u3067\u899a\u3048\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u7d39\u4ecb\u3059\u308bscikit learn\u3067\u306f\u3001\u5b9f\u306f\u3053\u306e\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u3053\u306e\u7dda\u5f62\u56de\u5e30\u306e\u6bb5\u968e\u3067\u306a\u3093\u3068\u306a\u304f\u7406\u89e3\u3057\u3066\u304a\u304b\u306a\u3044\u3068\u753b\u50cfAI\u3068\u304b\u3067\u306f\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304b\u308f\u304b\u3089\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u306e\u3067\u3001\u899a\u3048\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\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;\">\u30e2\u30c7\u30eb\u3068\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/span><\/div>\n<div style=\"padding: 30px 15px 10px; border-radius: 5px; border: 8px solid #91D8AC;\">\n<p>\u6a5f\u68b0\u5b66\u7fd2\u306b\u304a\u3051\u308b\u300c\u30e2\u30c7\u30eb\u300d\u3068\u306f\u6570\u5f0f\u306e\u3053\u3068\u3067\u3059\u3002\u5358\u56de\u5e30\u306e\u4f8b\u3067\u3044\u3048\u3070\u3001\u8fd1\u4f3c\u5f0fy = w * x + b\u304c\u30e2\u30c7\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u3053\u306e\u300c\u30e2\u30c7\u30eb\u300d\u306ew\u3084b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u3069\u3046\u3044\u3063\u305f\u8003\u3048\u65b9\u306b\u57fa\u3065\u3044\u3066\u8a08\u7b97\u3059\u308b\u306e\u304b\uff1f\u3092\u793a\u3059\u306e\u304c\u300c\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u300d\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u5225\u306e\u8a00\u3044\u65b9\u3092\u3059\u308c\u3070\u3001\u300c\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u300d\u3068\u306f\u3001\u3069\u3046\u3084\u3063\u3066\u6700\u9069\u306a\u8fd1\u4f3c\u5f0f\u3092\u7b97\u51fa\u3059\u308b\u306e\u304b\uff1f\u3068\u3044\u3063\u305f\u8003\u3048\u65b9\u306e\u3053\u3068\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u2192\u4f55\u3089\u304b\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u2192\u30e2\u30c7\u30eb<\/p>\n<p>\u4f8b\uff1a\u5358\u56de\u5e30<br \/>\n\u5bb6\u306e\u9762\u7a4d\/\u90e8\u5c4b\u6570\/\u30ea\u30d3\u30f3\u30b0\u306e\u9762\u7a4d\u2192\u6700\u5c0f\u4e8c\u4e57\u6cd5\u3001\u52fe\u914d\u964d\u4e0b\u6cd5(\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0)\u2192y = w * x + b<\/p>\n<\/div>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"scikit_learn%E3%81%A8%E3%81%AF%EF%BC%9F\"><\/span>scikit learn\u3068\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/scikit-learn.org\/stable\/index.html\" target=\"_blank\" rel=\"noopener noreferrer\">scikit learn<\/a>\u306f\u7dda\u5f62\u56de\u5e30\u306a\u3069\u306e\u6a5f\u68b0\u5b66\u7fd2\u3092\u7c21\u5358\u306b\u5b9f\u884c\u3057\u3066\u304f\u308c\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"scikit_learn%E3%81%AE%E3%82%A4%E3%83%B3%E3%82%B9%E3%83%88%E3%83%BC%E3%83%AB\"><\/span>scikit learn\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Anaconda\u306a\u3069python\u306e\u4f7f\u3048\u308b\u74b0\u5883\u306eTerminal\u3084\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3067\u4e0b\u8a18\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true\">pip install scikit-learn<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"scikit_learn%E3%81%A7%E7%B7%9A%E5%BD%A2%E5%9B%9E%E5%B8%B0%E3%83%A2%E3%83%87%E3%83%AB%E3%82%92%E4%BD%9C%E3%81%A3%E3%81%A6%E3%81%BF%E3%82%88%E3%81%86\"><\/span>scikit learn\u3067\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u3067\u306f\u3001\u5b9f\u969b\u306bscikit learn\u3092\u4f7f\u3063\u3066\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\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%82%92%E3%82%A4%E3%83%B3%E3%83%9D%E3%83%BC%E3%83%88\"><\/span>\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30dd\u30fc\u30c8<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u306f\u3001\u30b0\u30e9\u30d5\u3082\u8868\u793a\u3057\u305f\u3044\u306e\u3067matplotlib\u3068\u6570\u5024\u6f14\u7b97\u7528\u306enumpy\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true\">from sklearn.linear_model import LinearRegression\r\nimport matplotlib.pyplot as plt\r\nimport numpy as np<\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E7%94%A8%E6%84%8F%E3%81%99%E3%82%8B\"><\/span>\u30c7\u30fc\u30bf\u3092\u7528\u610f\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6b21\u306b\u30c7\u30fc\u30bf\u3092\u7528\u610f\u3057\u307e\u3059\u304c\u3001\u5206\u304b\u308a\u3084\u3059\u3055\u306e\u305f\u3081\u3001w=2\u3001b=1\u306e\u4e71\u6570\u3092\u6df7\u305c\u305f\u30c7\u30fc\u30bf\u309210\u70b9\u7528\u610f\u3057\u3066\u305d\u306e\u30c7\u30fc\u30bf\u3067\u52d5\u304b\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u306f\u4e0b\u8a18\u30b3\u30fc\u30c9\u3067\u7528\u610f\u3057\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u306f\u6163\u308c\u3066\u3044\u308b\u65b9\u306f\u300cpython\u306b\u6163\u308c\u3066\u3044\u308b\u65b9\u306f\u3053\u3061\u3089\u3067\u3082OK\u300d\u306e\u3068\u3053\u308d\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"lang:python decode:true\"># 1\u6b21\u5f0f\u306ew\u3068b\r\nw = 2\r\nb = 1\r\n\r\n# \u30c7\u30fc\u30bf\u4f5c\u6210\r\nx = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]\r\ny = []\r\nfor x_data in x:\r\n    rand = np.random.randint(-10, 10)\/10\r\n    y.append(b + w * x_data + rand)\r\n    \r\n# python\u306b\u6163\u308c\u3066\u3044\u308b\u65b9\u306f\u3053\u3061\u3089\u3067\u3082OK\r\nx = range(1,11)\r\ny = [b + w * x_data + np.random.randint(-10, 10)\/10 for x_data in x]\r\n\r\n# \u30c7\u30fc\u30bf\u3092\u6574\u5f62\r\nx = np.array(x).reshape([10,1])\r\ny = np.array(y)\r\n\r\n# \u30b0\u30e9\u30d5\u8868\u793a    \r\nplt.scatter(x, y)<\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-484\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear8.png\" alt=\"\" width=\"400\" height=\"254\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear8.png 780w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear8-600x382.png 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear8-300x191.png 300w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/ml_linear8-768x488.png 768w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>\u30c7\u30fc\u30bf\u3092\u9014\u4e2d\u6574\u5f62\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u6a5f\u68b0\u5b66\u7fd2\u3067\u306f\u3088\u304f\u4e0b\u8a18\u306e\u3088\u3046\u306a\u8868\u30c7\u30fc\u30bf\u3067\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u5834\u5408\u3001x\u306f\uff08n\u884c, m\u5217\uff09\u3001y\u306fn\u500b\u306e\u30c7\u30fc\u30bf\u3067\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-485\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/ml_linear9.png\" alt=\"\" width=\"300\" height=\"251\" \/><\/p>\n<p>\u3067\u3059\u306e\u3067\u3001\u4eca\u56de\u306fx\u3092n=10\u3001m=1\u306e\u30c7\u30fc\u30bf\u306b\u3057\u305f\u3044\u306e\u3067\u3001<a href=\"https:\/\/numpy.org\/doc\/stable\/reference\/generated\/numpy.reshape.html\" target=\"_blank\" rel=\"noopener noreferrer\">reshape<\/a>\u30e1\u30bd\u30c3\u30c9\u3067[10\u884c,1\u5217]\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%A6%E7%BF%92\"><\/span>\u5b66\u7fd2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5b66\u7fd2\u306f\u3001\u7c21\u5358\u3067<a href=\"https:\/\/scikit-learn.org\/stable\/modules\/generated\/sklearn.linear_model.LinearRegression.html\" target=\"_blank\" rel=\"noopener noreferrer\">LinearRegression<\/a>\u3092\u547c\u3073\u51fa\u3057\u3066\u3001fit\u30e1\u30bd\u30c3\u30c9\u306b\u3001x\u3068y\u3092\u5165\u308c\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n<p>\u5b66\u7fd2\u3068\u3044\u3046\u3068\u5927\u8888\u88df\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001loss\u306e\u6700\u5c0f\u5316\u3092\u3057\u307e\u3059\u3002<\/p>\n<p>\u7279\u306b\u4f55\u3082\u6307\u5b9a\u3059\u308b\u3053\u3068\u306a\u304f\u3001fit\u3092\u4f7f\u3046\u3060\u3051\u3067\u5f8c\u306f\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true\"># \u7dda\u5f62\u56de\u5e30\r\nlr = LinearRegression()\r\n# \u5b66\u7fd2 fit\u95a2\u6570\u3092\u4f7f\u3046\u3060\u3051\r\nlr.fit(x, y)<\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E7%A2%BA%E8%AA%8D\"><\/span>\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5b66\u7fd2\u5f8c\u306ew\u3068b\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>coef_\u3068intercept_\u3067\u78ba\u8a8d\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true\">print(\"w = \", lr.coef_)\r\nprint(\"b =\", lr.intercept_)<\/pre>\n<pre class=\"\">w =  [2.09818182]\r\nb = 0.7400000000000002\r\n<\/pre>\n<p>\u4e71\u6570\u3092\u5165\u308c\u3066\u3044\u305f\u306e\u3067\u3001\u5c11\u3057\u5024\u306f\u9055\u3044\u307e\u3059\u304c\u3001\u304a\u304a\u3088\u305dw = 2 \u3001 b = 1\u306b\u8fd1\u3044\u6570\u5b57\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\uff0a\u30c7\u30fc\u30bf\u306f\u4e71\u6570\u3092\u6df7\u305c\u3066\u3044\u308b\u306e\u3067\u3001\u7d50\u679c\u306f\u5b9f\u884c\u6bce\u306b\u9055\u3044\u307e\u3059\u3002\u5927\u4f53w=2\u3001b=1\u306b\u306a\u3063\u3066\u3044\u308c\u3070OK\u3067\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%96%B0%E3%81%97%E3%81%84%E3%83%87%E3%83%BC%E3%82%BF%E3%81%A7%E4%BA%88%E6%B8%AC\"><\/span>\u65b0\u3057\u3044\u30c7\u30fc\u30bf\u3067\u4e88\u6e2c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u624b\u5143\u306b\u3042\u308b\u30c7\u30fc\u30bf\u3067\u5b66\u7fd2\u304c\u7d42\u308f\u3063\u305f\u306e\u3067\u3001\u6559\u5e2b\u30c7\u30fc\u30bf\u306b\u306f\u306a\u3044\u30c7\u30fc\u30bf\u3067\u3001\u4e88\u6e2c\u3092\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001\u9069\u5f53\u306b5.5\u306810.3\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true \">x_test = np.array([5.5, 10.3]).reshape(2,1)\r\nlr.predict(x_test)<\/pre>\n<pre class=\"\">array([12.28      , 22.35127273])<\/pre>\n<p>\u5927\u4f53\u5408\u3063\u3066\u305d\u3046\u3067\u3059\u306d\u3002<\/p>\n<p>\uff0a\u30c7\u30fc\u30bf\u306f\u4e71\u6570\u3092\u6df7\u305c\u3066\u3044\u308b\u306e\u3067\u3001\u7d50\u679c\u306f\u5b9f\u884c\u6bce\u306b\u9055\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3067\u3001\u7dda\u5f62\u56de\u5e30\u3067\u5b66\u7fd2\u3055\u305b\u3001\u65b0\u3057\u3044\u30c7\u30fc\u30bf\u3092\u4e88\u6e2c\u3059\u308b\u3053\u3068\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>scikit learn\u3067\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>\u300c\u56de\u5e30\u300d\u306e\u3088\u3046\u306b\u5c11\u3057\u3068\u3063\u3064\u304d\u306b\u304f\u3044\u6570\u5b66\u7684\u306a\u7528\u8a9e\u3084\u3001\u300c\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u300d\u3084\u300c\u30e2\u30c7\u30eb\u300d\u3001\u300c\u30e9\u30a4\u30d6\u30e9\u30ea\u300d\u3068\u3044\u3063\u305f\u6a5f\u68b0\u5b66\u7fd2\u306e\u7528\u8a9e\u3082\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n<p>\u7dda\u5f62\u56de\u5e30\u306f\u30e2\u30c7\u30eb\u304c\u76f4\u611f\u7684\u306b\u5206\u304b\u308a\u3084\u3059\u3044\u306e\u3067\u3001\u4f55\u5ea6\u3082\u5fa9\u7fd2\u3057\u3066\u4f7f\u3044\u3053\u306a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6a5f\u68b0\u5b66\u7fd2\u3092\u6700\u521d\u306b\u5b66\u3076\u3068\u304d\u306f\u7dda\u5f62\u56de\u5e30\u304b\u3089\u59cb\u3081\u3066\u3044\u304d\u307e\u3059\u3002 \u4e2d\u5b66\u3067\u7fd2\u3046\u4e0b\u8a18\u306e\u3088\u3046\u306a\uff11\u6b21\u5f0f\u3092\u5fa9\u7fd2\u3059\u308b\u3053\u3068\u3067\u3001\u6a5f\u68b0\u5b66\u7fd2\u306e\u57fa\u790e\u7684\u306a\u8003\u3048\u304c\u308f\u304b\u308a\u307e\u3059\u3002 \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 \u305f\u3060\u3001\u4e2d\u76e4\u4ee5\u964d\u306f &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/tetsumag.com\/blog\/2020\/12\/05\/241\/\"> <span class=\"screen-reader-text\">\u3010scikit learn\u3011\u7dda\u5f62\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046<\/span> \u3082\u3063\u3068\u8aad\u3080 &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":453,"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],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/389"}],"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=389"}],"version-history":[{"count":1,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/389\/revisions"}],"predecessor-version":[{"id":14217,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/389\/revisions\/14217"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/media\/453"}],"wp:attachment":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/media?parent=389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/categories?post=389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/tags?post=389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}