{"id":9095,"date":"2024-01-16T17:06:26","date_gmt":"2024-01-16T09:06:26","guid":{"rendered":"\/?p=9095"},"modified":"2024-01-16T17:06:26","modified_gmt":"2024-01-16T09:06:26","slug":"%e6%9c%ba%e5%99%a8%e5%ad%a6%e4%b9%a0-%e7%ba%bf%e6%80%a7%e5%9b%9e%e5%bd%92%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"\/?p=9095","title":{"rendered":"\u673a\u5668\u5b66\u4e60\u2014\u2014\u7ebf\u6027\u56de\u5f52\u7b97\u6cd5"},"content":{"rendered":"<h2>\u53c2\u8003\u6587\u7ae0<\/h2>\n<ul>\n<li>\n<p>\u4e3a\u4ec0\u4e48\u662f\u201c\u6700\u5c0f\u4e8c\u4e58\u201d\u800c\u4e0d\u662f\u201c\u6700\u5c0f\u4e00\u4e58\u201d\uff1f<\/p>\n<p><a href=\"https:\/\/blog.csdn.net\/fengzhuqiaoqiu\/article\/details\/105226868\">https:\/\/blog.csdn.net\/fengzhuqiaoqiu\/article\/details\/105226868<\/a><\/p>\n<\/li>\n<li>\n<p>\u4e0d\u501f\u52a9sklearn\u7684\u6848\u4f8b\uff1a<\/p>\n<p><a href=\"https:\/\/cuijiahua.com\/blog\/2017\/11\/ml_11_regression_1.html\">https:\/\/cuijiahua.com\/blog\/2017\/11\/ml_11_regression_1.html<\/a><\/p>\n<\/li>\n<li>\n<p>sklearn\u7684\u6848\u4f8b\uff1a<\/p>\n<p><a href=\"https:\/\/github.com\/goodboyv\/Sklearn_Mochine_leanring\/blob\/master\/%E7%BA%BF%E6%80%A7%E5%9B%9E%E5%BD%92.py\">https:\/\/github.com\/goodboyv\/Sklearn_Mochine_leanring\/blob\/master\/%E7%BA%BF%E6%80%A7%E5%9B%9E%E5%BD%92.py<\/a><\/p>\n<\/li>\n<li>\n<p>\u68af\u5ea6\u4e0b\u964d\u6cd5\u8bb2\u89e3<\/p>\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/261375491\">https:\/\/zhuanlan.zhihu.com\/p\/261375491<\/a><\/p>\n<\/li>\n<li>\n<p>\u7ebf\u6027\u56de\u5f52\u516c\u5f0f\u63a8\u5bfc\u53ca\u4ee3\u7801\u5b9e\u73b0\uff08\u975e\u8c03\u5305\uff09<\/p>\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/466841056?utm_id=0\">https:\/\/zhuanlan.zhihu.com\/p\/466841056?utm_id=0<\/a><\/p>\n<\/li>\n<li>\n<p>\u3010\u673a\u5668\u5b66\u4e60\u3011\u7ebf\u6027\u56de\u5f52\uff08\u8d85\u8be6\u7ec6\uff09<\/p>\n<p><a href=\"https:\/\/blog.csdn.net\/weixin_51781852\/article\/details\/122627291\">https:\/\/blog.csdn.net\/weixin_51781852\/article\/details\/122627291<\/a><\/p>\n<\/li>\n<\/ul>\n<h2>\u5173\u952e\u6982\u5ff5<\/h2>\n<h3>1.\u6b8b\u5dee<\/h3>\n<p>\u6b8b\u5dee\u5728\u6570\u7406\u7edf\u8ba1\u4e2d\u662f\u6307\u5b9e\u9645<strong>\u89c2\u5bdf\u503c\u4e0e\u4f30\u8ba1\u503c\uff08\u62df\u5408\u503c\uff09\u4e4b\u95f4\u7684\u5dee<\/strong>\u3002\u201c\u6b8b\u5dee\u201d\u8574\u542b\u4e86\u6709\u5173\u6a21\u578b\u57fa\u672c\u5047\u8bbe\u7684\u91cd\u8981\u4fe1\u606f\u3002\u5982\u679c\u56de\u5f52\u6a21\u578b\u6b63\u786e\u7684\u8bdd\uff0c 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src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116165848734.png\" alt=\"image-20240116165848734\" \/><\/p>\n<p><strong>\u6b63\u592a\u5206\u5e03<\/strong><\/p>\n<ul>\n<li>\u72ec\u7acb\u540c\u5206\u5e03<\/li>\n<\/ul>\n<p>\u6b63\u6001\u5206\u5e03\u516c\u5f0f\uff1a<img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116165952690.png\" alt=\"image-20240116165952690\" \/><\/p>\n<p>\u8bef\u5dee<img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116170016079.png\" alt=\"image-20240116170016079\" \/>\u72ec\u7acb\u5e76\u4e14\u5177\u6709\u76f8\u540c\u5206\u5e03\uff0c\u5e76\u4e14\u670d\u4ece\u5747\u503c\u4e3a0\uff0c\u65b9\u5dee<img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116170034059.png\" alt=\"image-20240116170034059\" \/>\u7684\u6b63\u6001\u5206\u5e03<\/p>\n<p>\u72ec\u7acb\uff1a\u5c0f\u660e\u548c\u5c0f\u7ea2\u7684\u4fe1\u7528\u989d\u5ea6\uff0c\u5f7c\u6b64\u4e0d\u5f71\u54cd<\/p>\n<p>\u540c\u5206\u5e03\uff1a\u5c0f\u660e\u548c\u5c0f\u7ea2\u90fd\u662f\u5728\u540c\u4e00\u4e2a\u94f6\u884c\u6b63\u6001\u5206\u5e03\uff1a\u94f6\u884c\u53ef\u80fd\u4f1a\u591a\u7ed9\u4e00\u70b9\uff0c\u4e5f\u53ef\u80fd\u4f1a\u5c0f\u7ed9\u4e00\u70b9\uff0c\u4f46\u662f\u6d6e\u52a8\u592a\u5927\u7684\u6982\u7387\u4f1a\u5f88\u5c0f\uff0c\u7b26\u5408\u6b63\u5e38\u72b6\u6001<\/p>\n<p><img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116170142232.png\" alt=\"image-20240116170142232\" \/><\/p>\n<p><strong>\u4f3c\u7136\u51fd\u6570<\/strong><\/p>\n<p>\u4ec0\u4e48\u6837\u7684\u53c2\u6570\u548c\u6570\u636e\u7684\u7ec4\u5408\u540e\u66f4\u63a5\u8fd1\u771f\u5b9e\u503c\uff0c\u8ba9\u8be5\u7ec4\u5408\u63a5\u8fd1\u771f\u5b9e\u503c\u7684\u6982\u7387\u8d8a\u5927\u8d8a\u597d\uff0c\u5219\u9700\u8981\u4f3c\u7136\u51fd\u6570\u6570\u503c\u8d8a\u5927\u8d8a\u597d<\/p>\n<p><img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116165435429.png\" alt=\"image-20240116165435429\" \/><\/p>\n<p><strong>\u5bf9\u6570\u4f3c\u7136<\/strong><\/p>\n<p>\u5c06\u4e58\u6cd5\u8fd0\u7b97\u8f6c\u6362\u6210\u52a0\u6cd5\u8fd0\u7b97\uff0c\u5c31\u4f7f\u7528\u5bf9\u6570\u6c42\u548c\u65b9\u6cd5<\/p>\n<p><img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116165458419.png\" alt=\"image-20240116165458419\" \/><\/p>\n<p><strong>\u5c55\u5f00\u5316\u7b80<\/strong><\/p>\n<p><img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116165538384.png\" alt=\"image-20240116165538384\" \/><\/p>\n<p><strong>\u4ee3\u4ef7\u51fd\u6570<\/strong><\/p>\n<p>\u8ba9\u4f3c\u7136\u51fd\u6570\u8d8a\u5927\u8d8a\u597d\uff0c\u5219\u9700\u8981J(\u03b8)\u8d8a\u5c0f\u8d8a\u597d\u3002<\/p>\n<p><img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116165612758.png\" alt=\"image-20240116165612758\" \/><\/p>\n<p>\u5982\u679c\u5047\u8bbe\u51fd\u6570\u662f<img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/eq.png\" alt=\"h=x\" \/>,\u90a3\u4e48\u6613\u77e5<img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/eq-1705395748275-19.png\" alt=\"J(0,1)=0\" \/>.\u901a\u8fc7\u5bf9\u6bd4\u8fd9\u4e24\u4e2a\u5f0f\u5b50\u53ef\u77e5\uff0c\u5f53<img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116170301218.png\" alt=\"image-20240116170301218\" \/>\u53d6\u6700\u5c0f\u503c\u65f6\uff0c\u8bef\u5dee\u6700\u5c0f\uff0c\u5047\u8bbe\u51fd\u6570\u62df\u5408\u7684\u6700\u597d\u3002<\/p>\n<p>\u5373\u6211\u4eec\u7684\u76ee\u7684\u53d8\u6210\u4e86\uff0c\u6c42\u5f53<img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116170301218-1705395805750-30.png\" alt=\"image-20240116170301218\" \/>\u53d6\u6700\u5c0f\u503c\u65f6\uff0c\u5c06\u5176\u6240\u5bf9\u5e94\u7684\u53c2\u6570<img src=\"https:\/\/lemon-guess.oss-cn-hangzhou.aliyuncs.com\/img\/image-20240116170543712.png\" alt=\"image-20240116170543712\" \/>\uff0c\u4ee3\u5165<strong>\u210e\ud835\udf03 (\ud835\udc65) = \ud835\udf030 + \ud835\udf031\ud835\udc65<\/strong>\u8fd9\u4e2a\u5f0f\u5b50\u4e2d\u5373\u5f97\u5047\u8bbe\u51fd\u6570\u3002<\/p>\n<p>\u5982\u4f55\u6c42\u6700\u5c0f\u503c\uff1f<\/p>\n<ol>\n<li>\u6700\u5c0f\u4e8c\u4e58\u6cd5<\/li>\n<li>\u68af\u5ea6\u4e0b\u964d\u6cd5<\/li>\n<li>\u725b\u987f\u6cd5\u7b49<\/li>\n<\/ol>\n<h2>\u6d41\u7a0b<\/h2>\n<ol>\n<li>\n<p>\u52a0\u8f7d\u6570\u636e\u96c6\uff08\u6570\u636e\u6e05\u6d17\u7b49\uff09\uff1b<\/p>\n<\/li>\n<li>\n<p>\u5212\u5206\u6570\u636e\u96c6\uff0c\u5206\u51fa\u7ea625%\u7684\u6570\u636e\u4f5c\u4e3a\u6d4b\u8bd5\u96c6\uff1b<\/p>\n<p>sklearn\u7684\u65b9\u6cd5\uff1a<code>x_train, x_test, y_train, y_test_ori = train_test_split(feature, target, test_size=0.25)<\/code><\/p>\n<\/li>\n<li>\n<p>\u6807\u51c6\u5316\u6216\u5f52\u4e00\u5316\uff1b<\/p>\n<\/li>\n<li>\n<p>\u5efa\u7acb\u7ebf\u6027\u56de\u5f52\u6a21\u578b\uff1b<\/p>\n<\/li>\n<li>\n<p>\u901a\u8fc7\u6700\u5c0f\u4e8c\u4e58\u6cd5\u6216\u68af\u5ea6\u4e0b\u964d\u6cd5\u6c42\u5f97\u4ee3\u4ef7\u51fd\u6570\uff08\u53c2\u6570\uff09\uff1b<\/p>\n<p>\u8fd8\u6709\u51e0\u79cd\uff1a\u968f\u673a\u68af\u5ea6\u4e0b\u964d\u6cd5\u3001\u5c0f\u6279\u91cf\u68af\u5ea6\u4e0b\u964d\u6cd5\u3001\u725b\u987f\u6cd5\u3001\u62df\u725b\u987f\u6cd5\u7b49<\/p>\n<\/li>\n<li>\n<p>\u6d4b\u8bd5\u96c6\u9a8c\u8bc1\u5747\u65b9\u8bef\u5dee<\/p>\n<pre><code class=\"language-python\">from sklearn.metrics import mean_squared_error\nerror = mean_squared_error(y_test_ori, y_predict_inverse)<\/code><\/pre>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u53c2\u8003\u6587\u7ae0 \u4e3a\u4ec0\u4e48\u662f\u201c\u6700\u5c0f\u4e8c\u4e58\u201d\u800c\u4e0d\u662f\u201c\u6700\u5c0f\u4e00\u4e58\u201d\uff1f https:\/\/blog.csdn.net\/fengzhuqiaoqiu\/artic   \u2026 &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[59],"tags":[],"_links":{"self":[{"href":"\/index.php?rest_route=\/wp\/v2\/posts\/9095"}],"collection":[{"href":"\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9095"}],"version-history":[{"count":1,"href":"\/index.php?rest_route=\/wp\/v2\/posts\/9095\/revisions"}],"predecessor-version":[{"id":9096,"href":"\/index.php?rest_route=\/wp\/v2\/posts\/9095\/revisions\/9096"}],"wp:attachment":[{"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9095"},{"taxonomy":"post_tag","embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}