{"id":188122,"date":"2024-05-09T16:36:20","date_gmt":"2024-05-09T08:36:20","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/188122.html"},"modified":"2024-05-09T16:36:24","modified_gmt":"2024-05-09T08:36:24","slug":"%e6%9c%ba%e5%99%a8%e5%ad%a6%e4%b9%a0%e4%b8%ad%e4%b8%ba%e4%bb%80%e4%b9%88%e8%a6%81%e5%88%92%e5%88%86%ef%bc%9a%e8%ae%ad%e7%bb%83%e9%9b%86%e3%80%81%e9%aa%8c%e8%af%81%e9%9b%86%e5%92%8c%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/188122.html","title":{"rendered":"\u673a\u5668\u5b66\u4e60\u4e2d\u4e3a\u4ec0\u4e48\u8981\u5212\u5206\uff1a\u8bad\u7ec3\u96c6\u3001\u9a8c\u8bc1\u96c6\u548c\u6d4b\u8bd5\u96c6"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26094338\/f2690ec4-b339-497b-a22e-1e3af56bb0df.webp\" alt=\"\u673a\u5668\u5b66\u4e60\u4e2d\u4e3a\u4ec0\u4e48\u8981\u5212\u5206\uff1a\u8bad\u7ec3\u96c6\u3001\u9a8c\u8bc1\u96c6\u548c\u6d4b\u8bd5\u96c6\" \/><\/p>\n<p><p><a href=\"https:\/\/docs.pingcode.com\/ask\/59192.html\" target=\"_blank\">\u673a\u5668\u5b66\u4e60<\/a>\u4e2d\u5212\u5206\u8bad\u7ec3\u96c6\u3001\u9a8c\u8bc1\u96c6\u548c\u6d4b\u8bd5\u96c6\u7684\u4e3b\u8981\u76ee\u7684\u662f\u4e3a\u4e86\u8bc4\u4f30\u6a21\u578b\u5728\u672a\u89c1\u8fc7\u7684\u6570\u636e\u4e0a\u7684\u6cdb\u5316\u80fd\u529b\uff0c\u9632\u6b62\u8fc7\u62df\u5408\u3001\u5e76\u8c03\u6574\u6a21\u578b\u53c2\u6570\u3002<strong>\u8bad\u7ec3\u96c6\u7528\u4e8e\u5b66\u4e60\u6a21\u578b\u53c2\u6570<\/strong>\u3001<strong>\u9a8c\u8bc1\u96c6\u7528\u4e8e\u6a21\u578b\u9009\u62e9\u548c\u8c03\u53c2<\/strong>\u3001<strong>\u6d4b\u8bd5\u96c6\u7528\u4e8e\u6700\u7ec8\u8bc4\u4f30\u6a21\u578b\u6027\u80fd<\/strong>\u3002\u5176\u4e2d\uff0c<strong>\u9a8c\u8bc1\u96c6\u5728\u6a21\u578b\u5f00\u53d1\u9636\u6bb5\u5177\u6709\u91cd\u8981\u4f5c\u7528<\/strong>\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u4e0d\u540c\u8d85\u53c2\u6570\u548c\u6a21\u578b\u67b6\u6784\u4e0b\u6027\u80fd\u7684\u53cd\u9988\uff0c\u6307\u5bfc\u5f00\u53d1\u8005\u505a\u51fa\u51b3\u7b56\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u6a21\u578b\u8bc4\u4f30\u4e0e\u6570\u636e\u5212\u5206<\/h3>\n<\/p>\n<p><p>\u5728\u673a\u5668\u5b66\u4e60\u4efb\u52a1\u4e2d\uff0c\u6211\u4eec\u901a\u5e38\u62e5\u6709\u4e00\u4e2a\u6807\u8bb0\u597d\u7684\u6570\u636e\u96c6\u3002\u4f46\u662f\uff0c\u5982\u679c\u6211\u4eec\u4ec5\u7528\u8fd9\u4e9b\u6570\u636e\u6765\u8bad\u7ec3\u548c\u6d4b\u8bd5\u6211\u4eec\u7684\u6a21\u578b\uff0c\u5c31\u65e0\u6cd5\u51c6\u786e\u8bc4\u4f30\u6a21\u578b\u5bf9\u672a\u77e5\u6570\u636e\u7684\u9884\u6d4b\u80fd\u529b\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u5c06\u6570\u636e\u96c6\u5206\u6210\u4e09\u4e2a\u90e8\u5206\uff1a\u8bad\u7ec3\u96c6\u3001\u9a8c\u8bc1\u96c6\u548c\u6d4b\u8bd5\u96c6\u3002<\/p>\n<\/p>\n<p><p>\u8bad\u7ec3\u96c6\uff08Tr<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>ning set\uff09\u7684\u4f5c\u7528\u662f\u8ba9\u6a21\u578b\u5b66\u4e60\u6570\u636e\u7684\u7279\u5f81\u548c\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u901a\u8fc7\u5728\u8bad\u7ec3\u96c6\u4e0a\u8c03\u6574\u6a21\u578b\u7684\u6743\u91cd\uff0c\u6211\u4eec\u4f7f\u6a21\u578b\u9002\u5e94\u6211\u4eec\u63d0\u4f9b\u7684\u6570\u636e\u3002\u7136\u800c\uff0c\u4e00\u4e2a\u826f\u597d\u7684\u6a21\u578b\u4e0d\u5e94\u8be5\u53ea\u5bf9\u8bad\u7ec3\u96c6\u4e0a\u7684\u6570\u636e\u6709\u5f88\u597d\u7684\u6027\u80fd\uff0c\u66f4\u5e94\u8be5\u5bf9\u672a\u89c1\u8fc7\u7684\u6570\u636e\u540c\u6837\u8868\u73b0\u4f18\u5f02\u3002\u8fd9\u5c31\u5f15\u5165\u4e86\u9a8c\u8bc1\u96c6\u548c\u6d4b\u8bd5\u96c6\u3002<\/p>\n<\/p>\n<p><p>\u9a8c\u8bc1\u96c6\uff08Validation set\uff09\u88ab\u7528\u6765\u5728\u6a21\u578b\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\u505a\u51fa\u51b3\u7b56\uff0c\u6bd4\u5982\u9009\u62e9\u6700\u5408\u9002\u7684\u6a21\u578b\u67b6\u6784\u6216\u8005\u8c03\u6574\u6a21\u578b\u7684\u8d85\u53c2\u6570\u3002\u9a8c\u8bc1\u96c6\u4e3a\u6a21\u578b\u8bad\u7ec3\u63d0\u4f9b\u4e86\u4e00\u4e2a\u516c\u6b63\u7684\u8bc4\u4f30\u5e73\u53f0\uff0c\u53ef\u4ee5\u51cf\u5c11\u6a21\u578b\u8fc7\u62df\u5408\u8bad\u7ec3\u6570\u636e\u7684\u98ce\u9669\u3002<\/p>\n<\/p>\n<p><p>\u6d4b\u8bd5\u96c6\uff08Test set\uff09\u7684\u76ee\u7684\u5728\u4e8e\u6a21\u578b\u8bad\u7ec3\u5b8c\u6210\u540e\uff0c\u63d0\u4f9b\u4e00\u4e2a\u72ec\u7acb\u4e8e\u8bad\u7ec3\u548c\u9a8c\u8bc1\u8fc7\u7a0b\u7684\u6027\u80fd\u8bc4\u4f30\u3002\u6d4b\u8bd5\u96c6\u53ef\u4ee5\u8ba4\u4e3a\u662f\u6a21\u578b\u53d1\u5e03\u524d\u6700\u540e\u7684\u8d28\u91cf\u4fdd\u8bc1\uff0c\u4fdd\u8bc1\u6a21\u578b\u5bf9\u65b0\u6570\u636e\u62e5\u6709\u826f\u597d\u7684\u6cdb\u5316\u80fd\u529b\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u8fc7\u62df\u5408\u4e0e\u6cdb\u5316<\/h3>\n<\/p>\n<p><p>\u6cdb\u5316\u80fd\u529b\uff08Generalization\uff09\u662f\u6307\u4e00\u4e2a\u6a21\u578b\u5bf9\u672a\u77e5\u6570\u636e\u8fdb\u884c\u9884\u6d4b\u7684\u80fd\u529b\u3002\u5f53\u4e00\u4e2a\u6a21\u578b\u5728\u8bad\u7ec3\u6570\u636e\u4e0a\u8868\u73b0\u975e\u5e38\u597d\uff0c\u4f46\u662f\u5728\u65b0\u7684\u6570\u636e\u4e0a\u8868\u73b0\u5dee\u65f6\uff0c\u6211\u4eec\u79f0\u6a21\u578b\u51fa\u73b0\u4e86\u8fc7\u62df\u5408\uff08Overfitting\uff09\u3002\u8fc7\u62df\u5408\u662f\u673a\u5668\u5b66\u4e60\u4e2d\u5e38\u89c1\u7684\u95ee\u9898\uff0c\u6a21\u578b\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u9002\u5e94\u4e86\u8bad\u7ec3\u6570\u636e\u4e2d\u7684\u566a\u58f0\uff0c\u800c\u4e0d\u662f\u6570\u636e\u7684\u771f\u5b9e\u5206\u5e03\u3002<\/p>\n<\/p>\n<p><p>\u4e3a\u4e86\u786e\u4fdd\u6a21\u578b\u5177\u6709\u826f\u597d\u7684\u6cdb\u5316\u80fd\u529b\uff0c\u6211\u4eec\u9700\u8981\u5728\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\u76d1\u63a7\u6a21\u578b\u7684\u8868\u73b0\uff0c\u5e76\u5728\u51fa\u73b0\u8fc7\u62df\u5408\u8ff9\u8c61\u65f6\u91c7\u53d6\u63aa\u65bd\u3002\u901a\u8fc7\u5728\u72ec\u7acb\u7684\u9a8c\u8bc1\u96c6\u4e0a\u8bc4\u4f30\u6a21\u578b\u6027\u80fd\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u8d85\u53c2\u6570\u8c03\u6574\u548c\u6a21\u578b\u9009\u578b\u8fc7\u7a0b\u4e2d\u4fdd\u7559\u6a21\u578b\u7684\u6cdb\u5316\u80fd\u529b\u3002\u5982\u679c\u6ca1\u6709\u9a8c\u8bc1\u96c6\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u65e0\u610f\u4e2d\u9009\u62e9\u8fc7\u5ea6\u62df\u5408\u8bad\u7ec3\u6570\u636e\u7684\u6a21\u578b\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u8d85\u53c2\u6570\u8c03\u6574\u4e0e\u6a21\u578b\u9009\u62e9<\/h3>\n<\/p>\n<p><p>\u673a\u5668\u5b66\u4e60\u6a21\u578b\u7684\u6027\u80fd\u4e0d\u4ec5\u53d6\u51b3\u4e8e\u7b97\u6cd5\u548c\u6570\u636e\u8d28\u91cf\uff0c\u8fd8\u4f9d\u8d56\u4e8e\u6a21\u578b\u7684\u8d85\u53c2\u6570\u3002\u8fd9\u4e9b\u8d85\u53c2\u6570\u63a7\u5236\u7740\u6a21\u578b\u7684\u5b66\u4e60\u8fc7\u7a0b\u548c\u590d\u6742\u5ea6\u3002\u4f8b\u5982\uff0c\u5728\u795e\u7ecf\u7f51\u7edc\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u51b3\u5b9a\u5c42\u6570\u3001\u6bcf\u5c42\u7684\u8282\u70b9\u6570\uff0c\u751a\u81f3\u5b66\u4e60\u7387\u548c\u6b63\u5219\u5316\u9879\u7684\u9009\u62e9\u4e5f\u662f\u8d85\u53c2\u6570\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. 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