{"id":625,"date":"2023-11-09T18:15:26","date_gmt":"2023-11-09T10:15:26","guid":{"rendered":"http:\/\/ai.gitpp.com\/?p=625"},"modified":"2023-11-09T18:16:17","modified_gmt":"2023-11-09T10:16:17","slug":"625","status":"publish","type":"post","link":"http:\/\/ai.gitpp.com\/index.php\/2023\/11\/09\/625\/","title":{"rendered":"\u6811\u56de\u5f52\u662f\u4e00\u79cd\u57fa\u4e8e\u6811\u7ed3\u6784\u7684\u56de\u5f52\u5206\u6790\u65b9\u6cd5"},"content":{"rendered":"\n<p>\u6811\u56de\u5f52\u662f\u4e00\u79cd\u57fa\u4e8e\u6811\u7ed3\u6784\u7684\u56de\u5f52\u5206\u6790\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u62df\u5408\u56e0\u53d8\u91cf\u548c\u81ea\u53d8\u91cf\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u6811\u56de\u5f52\u6a21\u578b\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u4e24\u79cd\u7c7b\u578b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u51b3\u7b56\u6811\u56de\u5f52\uff08Decision Tree Regression\uff09\uff1a\u51b3\u7b56\u6811\u56de\u5f52\u662f\u4e00\u79cd\u57fa\u4e8e\u51b3\u7b56\u6811\u7684\u56de\u5f52\u7b97\u6cd5\uff0c\u5b83\u901a\u8fc7\u9012\u5f52\u5730\u5212\u5206\u6570\u636e\u96c6\u6765\u6784\u5efa\u6811\u7ed3\u6784\uff0c\u5e76\u4f7f\u7528\u53f6\u5b50\u8282\u70b9\u8868\u793a\u56de\u5f52\u7cfb\u6570\u3002\u51b3\u7b56\u6811\u56de\u5f52\u5177\u6709\u826f\u597d\u7684\u53ef\u89e3\u91ca\u6027\uff0c\u4f46\u53ef\u80fd\u8fc7\u62df\u5408\u3002<\/li>\n\n\n\n<li>\u968f\u673a\u68ee\u6797\u56de\u5f52\uff08Random Forest Regression\uff09\uff1a\u968f\u673a\u68ee\u6797\u56de\u5f52\u662f\u4e00\u79cd\u57fa\u4e8e\u968f\u673a\u68ee\u6797\u7684\u56de\u5f52\u7b97\u6cd5\uff0c\u5b83\u901a\u8fc7\u968f\u673a\u9009\u53d6\u7279\u5f81\u548c\u6837\u672c\u5b50\u96c6\uff0c\u5e76\u6784\u5efa\u591a\u4e2a\u51b3\u7b56\u6811\u6765\u63d0\u9ad8\u9884\u6d4b\u6027\u80fd\u3002\u968f\u673a\u68ee\u6797\u56de\u5f52\u5177\u6709\u8f83\u9ad8\u7684\u9884\u6d4b\u51c6\u786e\u6027\uff0c\u4e14\u4e0d\u6613\u8fc7\u62df\u5408\u3002<br>\u5728 Python \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 scikit-learn \u5e93\u5b9e\u73b0\u6811\u56de\u5f52\u7b97\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u51b3\u7b56\u6811\u56de\u5f52\u793a\u4f8b\uff1a<br>&#8220;`python<\/li>\n<\/ol>\n\n\n\n<h1 class=\"wp-block-heading\">\u5bfc\u5165\u6240\u9700\u5e93<\/h1>\n\n\n\n<p class=\"has-palette-color-2-color has-text-color has-link-color wp-elements-94867021893324afbbf31bdb6652887d\">from sklearn.datasets import load_boston<br>from sklearn.tree import DecisionTreeRegressor<br>from sklearn.model_selection import train_test_split<br>from sklearn.metrics import mean_squared_error<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u52a0\u8f7d\u6570\u636e\u96c6<\/h1>\n\n\n\n<p class=\"has-palette-color-2-color has-text-color has-link-color wp-elements-c52b0475ba8fe8ecaf128d96eba6ddbe\">boston = load_boston()<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u5212\u5206\u8bad\u7ec3\u96c6\u548c\u6d4b\u8bd5\u96c6<\/h1>\n\n\n\n<p class=\"has-palette-color-2-color has-text-color has-link-color wp-elements-22c18daf38279e8bfb12ef466d898036\">X_train, X_test, y_train, y_test = train_test_split(boston.data, boston.target, test_size=0.3, random_state=42)<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u521b\u5efa\u51b3\u7b56\u6811\u56de\u5f52\u6a21\u578b<\/h1>\n\n\n\n<p class=\"has-palette-color-2-color has-text-color has-link-color wp-elements-796dbb66da70352714d215fba2bb796c\">dt_regressor = DecisionTreeRegressor(random_state=42)<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u8bad\u7ec3\u6a21\u578b<\/h1>\n\n\n\n<p class=\"has-palette-color-2-color has-text-color has-link-color wp-elements-ac2d6e080e1d9dbe8c1d3808ea34c7e4\">dt_regressor.fit(X_train, y_train)<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u9884\u6d4b<\/h1>\n\n\n\n<p>y_pred = dt_regressor.predict(X_test)<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u8bc4\u4f30\u6a21\u578b<\/h1>\n\n\n\n<p>mse = mean_squared_error(y_test, y_pred)<br>print(&#8220;Mean Squared Error:&#8221;, mse)<br>&#8220;`<\/p>\n\n\n\n<p><br>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u6ce2\u58eb\u987f\u623f\u4ef7\u6570\u636e\u96c6\uff0c\u5e76\u5c06\u5176\u5212\u5206\u4e3a\u8bad\u7ec3\u96c6\u548c\u6d4b\u8bd5\u96c6\u3002\u7136\u540e\uff0c\u521b\u5efa\u4e00\u4e2a\u51b3\u7b56\u6811\u56de\u5f52\u6a21\u578b\u5e76\u8bad\u7ec3\u5b83\u3002\u6700\u540e\uff0c\u4f7f\u7528\u6d4b\u8bd5\u96c6\u8fdb\u884c\u9884\u6d4b\u5e76\u8bc4\u4f30\u6a21\u578b\u6027\u80fd\u3002<br>\u6811\u56de\u5f52\u7b97\u6cd5\u5728\u5904\u7406\u5177\u6709\u975e\u7ebf\u6027\u5173\u7cfb\u7684\u95ee\u9898\u65f6\u53ef\u80fd\u8868\u73b0\u4e0d\u4f73\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5176\u4ed6\u56de\u5f52\u65b9\u6cd5\uff0c\u5982\u652f\u6301\u5411\u91cf\u673a\uff08SVM\uff09\u3001\u795e\u7ecf\u7f51\u7edc\uff08Neural Networks\uff09\u7b49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6811\u56de\u5f52\u662f\u4e00\u79cd\u57fa\u4e8e\u6811\u7ed3\u6784\u7684\u56de\u5f52\u5206\u6790\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u62df\u5408\u56e0\u53d8\u91cf\u548c\u81ea\u53d8\u91cf\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u6811\u56de\u5f52\u6a21\u578b\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u4e24\u79cd\u7c7b\u578b\uff1a [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-625","post","type-post","status-publish","format-standard","hentry","category-32"],"blocksy_meta":"","_links":{"self":[{"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/posts\/625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/comments?post=625"}],"version-history":[{"count":2,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/posts\/625\/revisions"}],"predecessor-version":[{"id":627,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/posts\/625\/revisions\/627"}],"wp:attachment":[{"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/media?parent=625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/categories?post=625"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/tags?post=625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}