{"id":58656,"date":"2023-10-26T14:42:39","date_gmt":"2023-10-26T06:42:39","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=58656"},"modified":"2023-10-26T14:42:40","modified_gmt":"2023-10-26T06:42:40","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8scikit-learn","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/58656.html","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Scikit-learn"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote\">\n<p>Scikit-learn\u662f\u4e00\u4e2a\u5f00\u6e90\u7684Python\u673a\u5668\u5b66\u4e60\u5e93\uff0c\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5de5\u5177\u548c\u529f\u80fd\uff0c\u7528\u4e8e\u6570\u636e\u9884\u5904\u7406\u3001\u7279\u5f81\u5de5\u7a0b\u3001\u6a21\u578b\u9009\u62e9\u548c\u8bc4\u4f30\u3002\u4f7f\u7528Scikit-learn\u7684\u65b9\u6cd5\u6709\uff1a1\u3001\u5b89\u88c5Scikit-learn\uff1b2\u3001\u6570\u636e\u51c6\u5907\uff1b3\u3001\u9009\u62e9\u5408\u9002\u7684\u6a21\u578b\uff1b4\u3001\u62c6\u5206\u6570\u636e\u96c6\uff1b5\u3001\u8bad\u7ec3\u6a21\u578b\u3002\u8981\u5f00\u59cb\u4f7f\u7528Scikit-learn\uff0c\u9996\u5148\u9700\u8981\u5b89\u88c5\u5b83\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528pip\u6765\u5b89\u88c5Scikit-learn<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u5b89\u88c5Scikit-learn<\/h2>\n\n\n\n<p>\u8981\u5f00\u59cb\u4f7f\u7528Scikit-learn\uff0c\u9996\u5148\u9700\u8981\u5b89\u88c5\u5b83\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528pip\u6765\u5b89\u88c5Scikit-learn\uff0c\u53ea\u9700\u5728\u547d\u4ee4\u884c\u4e2d\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pip install scikit-learn\r<\/code><\/pre>\n\n\n\n<p>\u786e\u4fdd\u60a8\u7684Python\u73af\u5883\u5df2\u6b63\u786e\u8bbe\u7f6e\uff0c\u5e76\u4e14\u60a8\u6709\u6743\u5229\u5b89\u88c5\u8f6f\u4ef6\u5305\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u6570\u636e\u51c6\u5907<\/h2>\n\n\n\n<p>\u5728\u6784\u5efa\u673a\u5668\u5b66\u4e60\u6a21\u578b\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u51c6\u5907\u597d\u60a8\u7684\u6570\u636e\u3002Scikit-learn\u652f\u6301\u5404\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u6570\u503c\u578b\u548c\u7c7b\u522b\u578b\u6570\u636e\u3002\u60a8\u9700\u8981\u786e\u4fdd\u6570\u636e\u5df2\u7ecf\u52a0\u8f7d\u5230\u9002\u5f53\u7684\u6570\u636e\u7ed3\u6784\u4e2d\uff0c\u5e76\u4e14\u8fdb\u884c\u4e86\u9002\u5f53\u7684\u9884\u5904\u7406\uff0c\u4f8b\u5982\u5904\u7406\u7f3a\u5931\u503c\u548c\u6807\u51c6\u5316\u6570\u636e\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u9009\u62e9\u5408\u9002\u7684\u6a21\u578b<\/h2>\n\n\n\n<p>Scikit-learn\u63d0\u4f9b\u4e86\u5404\u79cd\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\uff0c\u5305\u62ec\u51b3\u7b56\u6811\u3001\u652f\u6301\u5411\u91cf\u673a\u3001\u968f\u673a\u68ee\u6797\u3001K\u5747\u503c\u805a\u7c7b\u7b49\u3002\u9009\u62e9\u5408\u9002\u7684\u6a21\u578b\u53d6\u51b3\u4e8e\u60a8\u7684\u95ee\u9898\u7c7b\u578b\uff08\u5206\u7c7b\u3001\u56de\u5f52\u3001\u805a\u7c7b\u7b49\uff09\u4ee5\u53ca\u6570\u636e\u7684\u6027\u8d28\u3002\u4e86\u89e3\u4e0d\u540c\u6a21\u578b\u7684\u4f18\u7f3a\u70b9\uff0c\u5e76\u6839\u636e\u60a8\u7684\u9700\u6c42\u9009\u62e9\u6700\u5408\u9002\u7684\u6a21\u578b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u62c6\u5206\u6570\u636e\u96c6<\/h2>\n\n\n\n<p>\u5728\u8bad\u7ec3\u6a21\u578b\u4e4b\u524d\uff0c\u901a\u5e38\u9700\u8981\u5c06\u6570\u636e\u96c6\u62c6\u5206\u4e3a\u8bad\u7ec3\u96c6\u548c\u6d4b\u8bd5\u96c6\u3002\u8fd9\u6709\u52a9\u4e8e\u8bc4\u4f30\u6a21\u578b\u7684\u6027\u80fd\u3002Scikit-learn\u63d0\u4f9b\u4e86\u7528\u4e8e\u6570\u636e\u96c6\u62c6\u5206\u7684\u5de5\u5177\uff0c\u5982<code>train_test_split<\/code>\u51fd\u6570\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from sklearn.model_selection import train_test_split\r\n\r\nX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)\r<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u8bad\u7ec3\u6a21\u578b<\/h2>\n\n\n\n<p>\u4f7f\u7528\u8bad\u7ec3\u96c6\u6765\u8bad\u7ec3\u60a8\u9009\u62e9\u7684\u6a21\u578b\u3002\u53ea\u9700\u8c03\u7528\u6a21\u578b\u7684<code>fit<\/code>\u65b9\u6cd5\uff0c\u5e76\u5c06\u8bad\u7ec3\u6570\u636e\u4f20\u9012\u7ed9\u5b83\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from sklearn.linear_model import LogisticRegression\r\n\r\nmodel = LogisticRegression()\r\nmodel.fit(X_train, y_train)\r<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u8bc4\u4f30\u6a21\u578b<\/h2>\n\n\n\n<p>\u4e00\u65e6\u6a21\u578b\u8bad\u7ec3\u5b8c\u6210\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u6d4b\u8bd5\u96c6\u6765\u8bc4\u4f30\u6a21\u578b\u7684\u6027\u80fd\u3002Scikit-learn\u63d0\u4f9b\u4e86\u591a\u79cd\u8bc4\u4f30\u6307\u6807\uff0c\u5982\u51c6\u786e\u6027\u3001\u7cbe\u786e\u5ea6\u3001\u53ec\u56de\u7387\u3001F1\u5206\u6570\u7b49\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u60a8\u7684\u95ee\u9898\u7c7b\u578b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from sklearn.metrics import accuracy_score\r\n\r\ny_pred = model.predict(X_test)\r\naccuracy = accuracy_score(y_test, y_pred)\r\nprint(f\"Accuracy: {accuracy}\")\r<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001\u8d85\u53c2\u6570\u8c03\u4f18<\/h2>\n\n\n\n<p>\u6a21\u578b\u901a\u5e38\u6709\u4e00\u4e9b\u8d85\u53c2\u6570\u9700\u8981\u8c03\u6574\uff0c\u4ee5\u83b7\u5f97\u6700\u4f73\u6027\u80fd\u3002Scikit-learn\u63d0\u4f9b\u4e86\u7f51\u683c\u641c\u7d22\u548c\u4ea4\u53c9\u9a8c\u8bc1\u7b49\u6280\u672f\uff0c\u5e2e\u52a9\u60a8\u9009\u62e9\u6700\u4f73\u7684\u8d85\u53c2\u6570\u7ec4\u5408\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u516b\u3001\u6a21\u578b\u90e8\u7f72<\/h2>\n\n\n\n<p>\u4e00\u65e6\u60a8\u6ee1\u610f\u6a21\u578b\u7684\u6027\u80fd\uff0c\u53ef\u4ee5\u5c06\u5176\u90e8\u7f72\u5230\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u4ee5\u8fdb\u884c\u5b9e\u9645\u9884\u6d4b\u3002Scikit-learn\u63d0\u4f9b\u4e86\u6a21\u578b\u5bfc\u51fa\u548c\u52a0\u8f7d\u7684\u529f\u80fd\uff0c\u4f7f\u90e8\u7f72\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002<\/p>\n\n\n\n<p>Scikit-learn\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u673a\u5668\u5b66\u4e60\u5e93\uff0c\u53ef\u4ee5\u5e2e\u52a9\u60a8\u6784\u5efa\u9ad8\u6027\u80fd\u7684\u673a\u5668\u5b66\u4e60\u6a21\u578b\u3002\u9075\u5faa\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u5e76\u4e0d\u65ad\u5b66\u4e60\u548c\u5b9e\u9a8c\uff0c\u60a8\u5c06\u80fd\u591f\u5145\u5206\u5229\u7528Scikit-learn\u6765\u89e3\u51b3\u5404\u79cd\u673a\u5668\u5b66\u4e60\u95ee\u9898\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"484\" height=\"300\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/10\/\u4f60\u7684\u6bb5\u843d\u6587\u5b57-15-3.jpg?x-oss-process=image\/auto-orient,1\/format,webp\" alt=\"\" class=\"wp-image-58658\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>\u5e38\u89c1\u95ee\u7b54<\/strong><\/h2>\n\n\n\n<ol>\n<li><strong>\u6211\u8be5\u5982\u4f55\u9009\u62e9\u5408\u9002\u7684\u673a\u5668\u5b66\u4e60\u6a21\u578b\uff1f<\/strong>\n<ul>\n<li>\u9009\u62e9\u5408\u9002\u7684\u6a21\u578b\u53d6\u51b3\u4e8e\u60a8\u7684\u95ee\u9898\u7c7b\u578b\u548c\u6570\u636e\u6027\u8d28\u3002\u4e86\u89e3\u4e0d\u540c\u6a21\u578b\u7684\u4f18\u7f3a\u70b9\uff0c\u6839\u636e\u95ee\u9898\u7684\u8981\u6c42\u8fdb\u884c\u9009\u62e9\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><strong>\u4e3a\u4ec0\u4e48\u9700\u8981\u62c6\u5206\u6570\u636e\u96c6\uff1f<\/strong><\/strong>\n<ul>\n<li>\u6570\u636e\u96c6\u7684\u62c6\u5206\u662f\u4e3a\u4e86\u8bc4\u4f30\u6a21\u578b\u7684\u6027\u80fd\u3002\u901a\u8fc7\u5c06\u6570\u636e\u5206\u4e3a\u8bad\u7ec3\u96c6\u548c\u6d4b\u8bd5\u96c6\uff0c\u53ef\u4ee5\u5728\u72ec\u7acb\u7684\u6570\u636e\u4e0a\u8bc4\u4f30\u6a21\u578b\u7684\u6cdb\u5316\u80fd\u529b\uff0c\u800c\u4e0d\u662f\u4ec5\u4ec5\u5728\u8bad\u7ec3\u6570\u636e\u4e0a\u6d4b\u8bd5\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><strong>\u5982\u4f55\u8bc4\u4f30Scikit-learn\u6a21\u578b\u7684\u6027\u80fd\uff1f<\/strong><\/strong>\n<ul>\n<li>Scikit-learn\u63d0\u4f9b\u4e86\u591a\u79cd\u8bc4\u4f30\u6307\u6807\uff0c\u5305\u62ec\u51c6\u786e\u6027\u3001\u7cbe\u786e\u5ea6\u3001\u53ec\u56de\u7387\u3001F1\u5206\u6570\u7b49\uff0c\u53ef\u6839\u636e\u95ee\u9898\u7c7b\u578b\u9009\u62e9\u5408\u9002\u7684\u6307\u6807\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"Scikit-learn\u662f\u4e00\u4e2a\u5f00\u6e90\u7684Python\u673a\u5668\u5b66\u4e60\u5e93\uff0c\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5de5\u5177\u548c\u529f\u80fd\uff0c\u7528\u4e8e\u6570\u636e\u9884\u5904\u7406\u3001\u7279\u5f81\u5de5\u7a0b\u3001 [&hellip;]","protected":false},"author":6,"featured_media":58657,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/58656"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=58656"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/58656\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/58657"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=58656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=58656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=58656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}