{"id":5957,"date":"2022-05-24T21:30:59","date_gmt":"2022-05-24T13:30:59","guid":{"rendered":"http:\/\/123.57.164.21\/?p=5957"},"modified":"2022-05-24T21:30:59","modified_gmt":"2022-05-24T13:30:59","slug":"%e6%9c%ba%e5%99%a8%e5%ad%a6%e4%b9%a0%e5%bb%ba%e6%a8%a1%e6%b5%81%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=5957","title":{"rendered":"\u673a\u5668\u5b66\u4e60\u5efa\u6a21\u6d41\u7a0b"},"content":{"rendered":"\n<p>\u968f\u7740\u4eba\u5de5\u667a\u80fd\u65f6\u4ee3\u7684\u5230\u6765\uff0c\u673a\u5668\u5b66\u4e60\u5df2\u6210\u4e3a\u89e3\u51b3\u95ee\u9898\u7684\u5173\u952e\u5de5\u5177\u3002\u6211\u4eec\u63a5\u4e0b\u6765\u4f1a\u8be6\u7ec6\u4ecb\u7ecd\u673a\u5668\u5b66\u4e60\u5982\u4f55\u5e94\u7528\u5230\u5b9e\u9645\u95ee\u9898\uff0c\u5e76\u6982\u62ec\u673a\u5668\u5b66\u4e60\u5e94\u7528\u7684\u4e00\u822c\u6d41\u7a0b\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135-1024x284.png\" alt=\"\" class=\"wp-image-5958\" width=\"500\" height=\"138\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135-1024x284.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135-300x83.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135-768x213.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135-830x230.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135-230x64.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135-350x97.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135-480x133.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-135.png 1290w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n\n<p><strong>1.1 \u660e\u786e\u95ee\u9898<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u660e\u786e\u4e1a\u52a1\u95ee\u9898\u662f\u673a\u5668\u5b66\u4e60\u7684\u5148\u51b3\u6761\u4ef6\uff0c\u5373\u62bd\u8c61\u51fa\u8be5\u95ee\u9898\u4e3a\u673a\u5668\u5b66\u4e60\u7684\u9884\u6d4b\u95ee\u9898\uff1a\u9700\u8981\u5b66\u4e60\u4ec0\u4e48\u6837\u7684\u6570\u636e\u4f5c\u4e3a\u8f93\u5165\uff0c\u76ee\u6807\u662f\u5f97\u5230\u4ec0\u4e48\u6837\u7684\u6a21\u578b\u505a\u51b3\u7b56\u4f5c\u4e3a\u8f93\u51fa\u3002<br>\u4e00\u4e2a\u7b80\u5355\u7684\u65b0\u95fb\u5206\u7c7b\u7684\u573a\u666f\uff0c\u5c31\u662f\u5b66\u4e60\u5df2\u6709\u7684\u65b0\u95fb\u53ca\u5176\u7c7b\u522b\u6807\u7b7e\u6570\u636e\uff0c\u5f97\u5230\u4e00\u4e2a\u6587\u672c\u5206\u7c7b\u6a21\u578b\uff0c\u901a\u8fc7\u6a21\u578b\u5bf9\u6bcf\u5929\u65b0\u7684\u65b0\u95fb\u505a\u7c7b\u522b\u9884\u6d4b\uff0c\u4ee5\u5f52\u7c7b\u5230\u6bcf\u4e2a\u65b0\u95fb\u9891\u9053\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-136-1024x291.png\" alt=\"\" class=\"wp-image-5959\" width=\"475\" height=\"134\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-136-1024x291.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-136-300x85.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-136-768x218.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-136-830x236.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-136-230x65.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-136-350x100.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-136.png 1294w\" sizes=\"(max-width: 475px) 100vw, 475px\" \/><\/figure><\/div>\n\n\n\n<p><strong>1.2 \u6570\u636e\u9009\u62e9<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u673a\u5668\u5b66\u4e60\u5e7f\u6cdb\u6d41\u4f20\u4e00\u53e5\u8bdd\uff1a\u201c\u6570\u636e\u548c\u7279\u5f81\u51b3\u5b9a\u4e86\u673a\u5668\u5b66\u4e60\u7ed3\u679c\u7684\u4e0a\u9650\uff0c\u800c\u6a21\u578b\u7b97\u6cd5\u53ea\u662f\u5c3d\u53ef\u80fd\u903c\u8fd1\u8fd9\u4e2a\u4e0a\u9650\u201d\uff0c\u610f\u5473\u7740\u6570\u636e\u53ca\u5176\u7279\u5f81\u8868\u793a\u7684\u8d28\u91cf\u51b3\u5b9a\u4e86\u6a21\u578b\u7684\u6700\u7ec8\u6548\u679c\uff0c\u4e14\u5728\u5b9e\u9645\u7684\u5de5\u4e1a\u5e94\u7528\u4e2d\uff0c\u7b97\u6cd5\u901a\u5e38\u5360\u4e86\u5f88\u5c0f\u7684\u4e00\u90e8\u5206\uff0c\u5927\u90e8\u5206\u7684\u5de5\u4f5c\u90fd\u662f\u5728\u627e\u6570\u636e\u3001\u63d0\u70bc\u6570\u636e\u3001\u5206\u6790\u6570\u636e\u53ca\u7279\u5f81\u5de5\u7a0b\u3002<\/p>\n\n\n\n<p>\u6570\u636e\u9009\u62e9\u662f\u51c6\u5907\u673a\u5668\u5b66\u4e60\u539f\u6599\u7684\u5173\u952e\uff0c\u9700\u8981\u5173\u6ce8\u7684\u662f\uff1a<\/p>\n\n\n\n<ul><li>\u2460 \u6570\u636e\u7684\u4ee3\u8868\u6027\uff1a\u6570\u636e\u8d28\u91cf\u5dee\u6216\u65e0\u4ee3\u8868\u6027\uff0c\u4f1a\u5bfc\u81f4\u6a21\u578b\u62df\u5408\u6548\u679c\u5dee\uff1b<\/li><li>\u2461 \u6570\u636e\u65f6\u95f4\u8303\u56f4\uff1a\u5bf9\u4e8e\u76d1\u7763\u5b66\u4e60\u7684\u7279\u5f81\u53d8\u91cfX\u53ca\u6807\u7b7eY\uff0c\u5982\u4e0e\u65f6\u95f4\u5148\u540e\u6709\u5173\uff0c\u5219\u9700\u8981\u5212\u5b9a\u597d\u6570\u636e\u65f6\u95f4\u7a97\u53e3\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u6cc4\u6f0f\uff0c\u5373\u5b58\u5728\u548c\u5229\u7528\u56e0\u679c\u98a0\u5012\u7684\u7279\u5f81\u53d8\u91cf\u7684\u73b0\u8c61\u3002\uff08\u5982\u9884\u6d4b\u660e\u5929\u4f1a\u4e0d\u4f1a\u4e0b\u96e8\uff0c\u4f46\u662f\u8bad\u7ec3\u6570\u636e\u5f15\u5165\u660e\u5929\u6e29\u6e7f\u5ea6\u60c5\u51b5\uff09\uff1b<\/li><li>\u2462 \u6570\u636e\u4e1a\u52a1\u8303\u56f4\uff1a\u660e\u786e\u4e0e\u4efb\u52a1\u76f8\u5173\u7684\u6570\u636e\u8868\u8303\u56f4\uff0c\u907f\u514d\u7f3a\u5931\u4ee3\u8868\u6027\u6570\u636e\u6216\u5f15\u5165\u5927\u91cf\u65e0\u5173\u6570\u636e\u4f5c\u4e3a\u566a\u97f3\u3002<\/li><\/ul>\n\n\n\n<p><strong>2 \u7279\u5f81\u5de5\u7a0b<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u7279\u5f81\u5de5\u7a0b\u5c31\u662f\u5bf9\u539f\u59cb\u6570\u636e\u5206\u6790\u5904\u7406\u8f6c\u5316\u4e3a\u6a21\u578b\u53ef\u7528\u7684\u7279\u5f81\uff0c\u8fd9\u4e9b\u7279\u5f81\u53ef\u4ee5\u66f4\u597d\u5730\u5411\u9884\u6d4b\u6a21\u578b\u63cf\u8ff0\u6f5c\u5728\u89c4\u5f8b\uff0c\u4ece\u800c\u63d0\u9ad8\u6a21\u578b\u5bf9\u672a\u89c1\u6570\u636e\u7684\u51c6\u786e\u6027\u3002\u7279\u5f81\u5de5\u7a0b\u6309\u6280\u672f\u4e0a\u53ef\u5206\u4e3a\u5982\u4e0b\u51e0\u6b65\uff1a<br>\u2460 \u63a2\u7d22\u6027\u6570\u636e\u5206\u6790\uff1a\u6570\u636e\u5206\u5e03\u3001\u7f3a\u5931\u3001\u5f02\u5e38\u53ca\u76f8\u5173\u6027\u7b49\u60c5\u51b5\uff1b<br>\u2461 \u6570\u636e\u9884\u5904\u7406\uff1a\u7f3a\u5931\u503c\/\u5f02\u5e38\u503c\u5904\u7406\uff0c\u6570\u636e\u79bb\u6563\u5316\uff0c\u6570\u636e\u6807\u51c6\u5316\u7b49\uff1b<br>\u2462 \u7279\u5f81\u63d0\u53d6\uff1a\u7279\u5f81\u8868\u793a\uff0c\u7279\u5f81\u884d\u751f\uff0c\u7279\u5f81\u9009\u62e9\uff0c\u7279\u5f81\u964d\u7ef4\u7b49\uff1b<\/p>\n\n\n\n<p><strong>2.1 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class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137-1024x434.png\" alt=\"\" class=\"wp-image-5963\" width=\"537\" height=\"228\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137-1024x434.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137-300x127.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137-768x325.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137-830x351.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137-230x97.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137-350x148.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137-480x203.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-137.png 1280w\" sizes=\"(max-width: 537px) 100vw, 537px\" \/><\/figure><\/div>\n\n\n\n<p><strong>2.2 \u6570\u636e\u9884\u5904\u7406<\/strong><\/p>\n\n\n\n<ul><li>\u5f02\u5e38\u503c\u5904\u7406<\/li><\/ul>\n\n\n\n<p>\u6536\u96c6\u7684\u6570\u636e\u7531\u4e8e\u4eba\u4e3a\u6216\u8005\u81ea\u7136\u56e0\u7d20\u53ef\u80fd\u5f15\u5165\u4e86\u5f02\u5e38\u503c\uff08\u566a\u97f3\uff09\uff0c\u8fd9\u4f1a\u5bf9\u6a21\u578b\u5b66\u4e60\u8fdb\u884c\u5e72\u6270\u3002 \u901a\u5e38\u9700\u8981\u5904\u7406\u4eba\u4e3a\u5f15\u8d77\u7684\u5f02\u5e38\u503c\uff0c\u901a\u8fc7\u4e1a\u52a1\u6216\u6280\u672f\u624b\u6bb5(\u59823\u03c3\u51c6\u5219)\u5224\u5b9a\u5f02\u5e38\u503c\uff0c\u518d\u7531\uff08\u6b63\u5219\u5f0f\u5339\u914d\uff09\u7b49\u65b9\u5f0f\u7b5b\u9009\u5f02\u5e38\u7684\u4fe1\u606f\uff0c\u5e76\u7ed3\u5408\u4e1a\u52a1\u60c5\u51b5\u5220\u9664\u6216\u8005\u66ff\u6362\u6570\u503c\u3002<\/p>\n\n\n\n<ul><li>\u7f3a\u5931\u503c\u5904\u7406<\/li><\/ul>\n\n\n\n<p>\u6570\u636e\u7f3a\u5931\u503c\u53ef\u4ee5\u901a\u8fc7\u7ed3\u5408\u4e1a\u52a1\u8fdb\u884c\u586b\u5145\u6570\u503c\u3001\u4e0d\u505a\u5904\u7406\u6216\u8005\u5220\u9664\u3002\u6839\u636e\u7279\u5f81\u7f3a\u5931\u7387\u60c5\u51b5\u53ca\u5904\u7406\u65b9\u5f0f\u5206\u4e3a\u4ee5\u4e0b\u60c5\u51b5\uff1a<br>\u2460 \u7f3a\u5931\u7387\u8f83\u9ad8\uff0c\u5e76\u7ed3\u5408\u4e1a\u52a1\u53ef\u4ee5\u76f4\u63a5\u5220\u9664\u8be5\u7279\u5f81\u53d8\u91cf\u3002\u7ecf\u9a8c\u4e0a\u53ef\u4ee5\u65b0\u589e\u4e00\u4e2abool\u7c7b\u578b\u7684\u53d8\u91cf\u7279\u5f81\u8bb0\u5f55\u8be5\u5b57\u6bb5\u7684\u7f3a\u5931\u60c5\u51b5\uff0c\u7f3a\u5931\u8bb0\u4e3a1\uff0c\u975e\u7f3a\u5931\u8bb0\u4e3a0\uff1b<br>\u2461 \u7f3a\u5931\u7387\u8f83\u4f4e\uff0c\u7ed3\u5408\u4e1a\u52a1\u53ef\u4f7f\u7528\u4e00\u4e9b\u7f3a\u5931\u503c\u586b\u5145\u624b\u6bb5\uff0c\u5982pandas\u7684fillna\u65b9\u6cd5\u3001\u8bad\u7ec3\u56de\u5f52\u6a21\u578b\u9884\u6d4b\u7f3a\u5931\u503c\u5e76\u586b\u5145\uff1b<br>\u2462 \u4e0d\u505a\u5904\u7406\uff1a\u90e8\u5206\u6a21\u578b\u5982\u968f\u673a\u68ee\u6797\u3001xgboost\u3001lightgbm\u80fd\u591f\u5904\u7406\u6570\u636e\u7f3a\u5931\u7684\u60c5\u51b5\uff0c\u4e0d\u9700\u8981\u5bf9\u7f3a\u5931\u6570\u636e\u518d\u505a\u5904\u7406\u3002<\/p>\n\n\n\n<ul><li>\u6570\u636e\u79bb\u6563\u5316<\/li><\/ul>\n\n\n\n<p>\u79bb\u6563\u5316\u662f\u5c06\u8fde\u7eed\u7684\u6570\u636e\u8fdb\u884c\u5206\u6bb5\uff0c\u4f7f\u5176\u53d8\u4e3a\u4e00\u6bb5\u6bb5\u79bb\u6563\u5316\u7684\u533a\u95f4\uff0c\u5206\u6bb5\u7684\u539f\u5219\u6709\u7b49\u5bbd\u3001\u7b49\u9891\u7b49\u65b9\u6cd5\u3002\u901a\u8fc7\u79bb\u6563\u5316\u4e00\u822c\u53ef\u4ee5\u589e\u52a0\u6297\u566a\u80fd\u529b\u3001\u4f7f\u7279\u5f81\u66f4\u6709\u4e1a\u52a1\u89e3\u91ca\u6027\u3001\u51cf\u5c0f\u7b97\u6cd5\u7684\u65f6\u95f4\u53ca\u7a7a\u95f4\u5f00\u9500\uff08\u4e0d\u540c\u7b97\u6cd5\u60c5\u51b5\u4e0d\u4e00\uff09\u3002<\/p>\n\n\n\n<ul><li>\u6570\u636e\u6807\u51c6\u5316<\/li><\/ul>\n\n\n\n<p>\u6570\u636e\u5404\u4e2a\u7279\u5f81\u53d8\u91cf\u7684\u91cf\u7eb2\u5dee\u5f02\u5f88\u5927\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u636e\u6807\u51c6\u5316\u6d88\u9664\u4e0d\u540c\u5206\u91cf\u91cf\u7eb2\u5dee\u5f02\u7684\u5f71\u54cd\uff0c\u52a0\u901f\u6a21\u578b\u6536\u655b\u7684\u6548\u7387\u3002\u5e38\u7528\u7684\u65b9\u6cd5\u6709\uff1a<br>\u2460 min-max \u6807\u51c6\u5316\uff1a<br>\u53ef\u5c06\u6570\u503c\u8303\u56f4\u7f29\u653e\u5230\uff080, 1\uff09\u4e14\u65e0\u6539\u53d8\u6570\u636e\u5206\u5e03\u3002max\u4e3a\u6837\u672c\u6700\u5927\u503c\uff0cmin\u4e3a\u6837\u672c\u6700\u5c0f\u503c\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-138.png\" alt=\"\" class=\"wp-image-5965\" width=\"202\" height=\"58\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-138.png 356w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-138-300x86.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-138-230x66.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-138-350x100.png 350w\" sizes=\"(max-width: 202px) 100vw, 202px\" \/><\/figure><\/div>\n\n\n\n<p>\u2461 z-score \u6807\u51c6\u5316\uff1a<br>\u53ef\u5c06\u6570\u503c\u8303\u56f4\u7f29\u653e\u52300\u9644\u8fd1\uff0c \u7ecf\u8fc7\u5904\u7406\u7684\u6570\u636e\u7b26\u5408\u6807\u51c6\u6b63\u6001\u5206\u5e03\u3002\u662f\u5e73\u5747\u503c\uff0c\u03c3\u662f\u6807\u51c6\u5dee\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-139.png\" alt=\"\" class=\"wp-image-5966\" width=\"154\" height=\"75\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-139.png 262w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-139-230x112.png 230w\" sizes=\"(max-width: 154px) 100vw, 154px\" \/><\/figure><\/div>\n\n\n\n<p><strong>2.3 \u7279\u5f81\u63d0\u53d6<\/strong><\/p>\n\n\n\n<ul><li>\u7279\u5f81\u8868\u793a<\/li><\/ul>\n\n\n\n<p>\u6570\u636e\u9700\u8981\u8f6c\u6362\u4e3a\u8ba1\u7b97\u673a\u80fd\u591f\u5904\u7406\u7684\u6570\u503c\u5f62\u5f0f\uff0c\u56fe\u7247\u7c7b\u7684\u6570\u636e\u9700\u8981\u8f6c\u6362\u4e3aRGB\u4e09\u7ef4\u77e9\u9635\u7684\u8868\u793a\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140-1024x286.png\" alt=\"\" class=\"wp-image-5967\" width=\"526\" height=\"146\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140-1024x286.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140-300x84.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140-768x214.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140-830x232.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140-230x64.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140-350x98.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140-480x134.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-140.png 1254w\" sizes=\"(max-width: 526px) 100vw, 526px\" \/><\/figure><\/div>\n\n\n\n<p>\u5b57\u7b26\u7c7b\u7684\u6570\u636e\u53ef\u4ee5\u7528\u591a\u7ef4\u6570\u7ec4\u8868\u793a\uff0c\u6709Onehot\u72ec\u70ed\u7f16\u7801\u8868\u793a\uff08\u7528\u5355\u72ec\u4e00\u4e2a\u4f4d\u7f6e\u76841\u6765\u8868\u793a\uff09\u3001word2vetor\u5206\u5e03\u5f0f\u8868\u793a\u7b49\uff1b<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141-1024x197.png\" alt=\"\" class=\"wp-image-5968\" width=\"569\" height=\"109\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141-1024x197.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141-300x58.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141-768x147.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141-830x159.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141-230x44.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141-350x67.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141-480x92.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-141.png 1406w\" sizes=\"(max-width: 569px) 100vw, 569px\" \/><\/figure><\/div>\n\n\n\n<ul><li>\u7279\u5f81\u884d\u751f<\/li><\/ul>\n\n\n\n<p>\u57fa\u7840\u7279\u5f81\u5bf9\u6837\u672c\u4fe1\u606f\u7684\u8868\u8fbe\u6709\u9650\uff0c\u53ef\u901a\u8fc7\u7279\u5f81\u884d\u751f\u53ef\u4ee5\u589e\u52a0\u7279\u5f81\u7684\u975e\u7ebf\u6027\u8868\u8fbe\u80fd\u529b\uff0c\u63d0\u5347\u6a21\u578b\u6548\u679c\u3002\u53e6\u5916\uff0c\u5728\u4e1a\u52a1\u4e0a\u7684\u7406\u89e3\u8bbe\u8ba1\u7279\u5f81\uff0c\u8fd8\u53ef\u4ee5\u589e\u52a0\u6a21\u578b\u7684\u53ef\u89e3\u91ca\u6027\u3002(\u5982\u4f53\u91cd\u9664\u4ee5\u8eab\u9ad8\u5c31\u662f\u8868\u8fbe\u5065\u5eb7\u60c5\u51b5\u7684\u91cd\u8981\u7279\u5f81\u3002)<br>\u7279\u5f81\u884d\u751f\u662f\u5bf9\u73b0\u6709\u57fa\u7840\u7279\u5f81\u7684\u542b\u4e49\u8fdb\u884c\u67d0\u79cd\u5904\u7406\uff08\u805a\u5408\/\u8f6c\u6362\u4e4b\u7c7b\uff09\uff0c\u5e38\u7528\u65b9\u6cd5\u4eba\u5de5\u8bbe\u8ba1\u3001\u81ea\u52a8\u5316\u7279\u5f81\u884d\u751f\uff08\u56fe4.15\uff09\uff1a<br>\u2460 \u7ed3\u5408\u4e1a\u52a1\u7684\u7406\u89e3\u505a\u4eba\u5de5\u884d\u751f\u8bbe\u8ba1\uff1a<br>\u805a\u5408\u7684\u65b9\u5f0f\u662f\u6307\u5bf9\u5b57\u6bb5\u805a\u5408\u540e\u6c42\u5e73\u5747\u503c\u3001\u8ba1\u6570\u3001\u6700\u5927\u503c\u7b49\u3002\u6bd4\u5982\u901a\u8fc712\u4e2a\u6708\u5de5\u8d44\u53ef\u4ee5\u52a0\u5de5\u51fa\uff1a\u5e73\u5747\u6708\u5de5\u8d44\uff0c\u85aa\u8d44\u6700\u5927\u503c \u7b49\u7b49\uff1b<br>\u8f6c\u6362\u7684\u65b9\u5f0f\u662f\u6307\u5bf9\u5b57\u6bb5\u95f4\u505a\u52a0\u51cf\u4e58\u9664\u4e4b\u7c7b\u3002\u6bd4\u5982\u901a\u8fc712\u4e2a\u6708\u5de5\u8d44\u53ef\u4ee5\u52a0\u5de5\u51fa\uff1a\u5f53\u6708\u5de5\u8d44\u6536\u5165\u4e0e\u652f\u51fa\u7684\u6bd4\u503c\u3001\u5dee\u503c\u7b49\u7b49\uff1b<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-1024x616.png\" alt=\"\" class=\"wp-image-5969\" width=\"515\" height=\"310\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-1024x616.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-300x180.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-768x462.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-1536x924.png 1536w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-830x499.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-230x138.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-350x211.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142-480x289.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-142.png 1566w\" sizes=\"(max-width: 515px) 100vw, 515px\" \/><\/figure><\/div>\n\n\n\n<p>\u2461 \u4f7f\u7528\u81ea\u52a8\u5316\u7279\u5f81\u884d\u751f\u5de5\u5177\uff1a\u5982Featuretools\u7b49\uff0c\u53ef\u4ee5\u4f7f\u7528\u805a\u5408(agg_primitives)\u3001\u8f6c\u6362(trans_primitives)\u6216\u5219\u81ea\u5b9a\u4e49\u65b9\u5f0f\u66b4\u529b\u751f\u6210\u7279\u5f81\uff1b<\/p>\n\n\n\n<ul><li>\u7279\u5f81\u9009\u62e9<\/li><\/ul>\n\n\n\n<p>\u7279\u5f81\u9009\u62e9\u7684\u76ee\u6807\u662f\u5bfb\u627e\u6700\u4f18\u7279\u5f81\u5b50\u96c6\uff0c\u901a\u8fc7\u7b5b\u9009\u51fa\u663e\u8457\u7279\u5f81\u3001\u6452\u5f03\u5197\u4f59\u7279\u5f81\uff0c\u51cf\u5c11\u6a21\u578b\u7684\u8fc7\u62df\u5408\u98ce\u9669\u5e76\u63d0\u9ad8\u8fd0\u884c\u6548\u7387\u3002\u7279\u5f81\u9009\u62e9\u65b9\u6cd5\u4e00\u822c\u5206\u4e3a\u4e09\u7c7b\uff1a<br>\u2460 \u8fc7\u6ee4\u6cd5\uff1a\u8ba1\u7b97\u7279\u5f81\u7684\u7f3a\u5931\u60c5\u51b5\u3001\u53d1\u6563\u6027\u3001\u76f8\u5173\u6027\u3001\u4fe1\u606f\u91cf\u3001\u7a33\u5b9a\u6027\u7b49\u7c7b\u578b\u7684\u6307\u6807\u5bf9\u5404\u4e2a\u7279\u5f81\u8fdb\u884c\u8bc4\u4f30\u9009\u62e9\uff0c\u5e38\u7528\u5982\u7f3a\u5931\u7387\u3001\u5355\u503c\u7387\u3001\u65b9\u5dee\u9a8c\u8bc1\u3001pearson\u76f8\u5173\u7cfb\u6570\u3001chi2\u5361\u65b9\u68c0\u9a8c\u3001IV\u503c\u3001\u4fe1\u606f\u589e\u76ca\u53caPSI\u7b49\u65b9\u6cd5\u3002<br>\u2461 \u5305\u88c5\u6cd5\uff1a\u901a\u8fc7\u6bcf\u6b21\u9009\u62e9\u90e8\u5206\u7279\u5f81\u8fed\u4ee3\u8bad\u7ec3\u6a21\u578b\uff0c\u6839\u636e\u6a21\u578b\u9884\u6d4b\u6548\u679c\u8bc4\u5206\u9009\u62e9\u7279\u5f81\u7684\u53bb\u7559\uff0c\u5982sklearn\u7684RFE\u9012\u5f52\u7279\u5f81\u6d88\u9664\u3002<br>\u2462 \u5d4c\u5165\u6cd5\uff1a\u76f4\u63a5\u4f7f\u7528\u67d0\u4e9b\u6a21\u578b\u8bad\u7ec3\u7684\u5230\u7279\u5f81\u91cd\u8981\u6027\uff0c\u5728\u6a21\u578b\u8bad\u7ec3\u540c\u65f6\u8fdb\u884c\u7279\u5f81\u9009\u62e9\u3002\u901a\u8fc7\u6a21\u578b\u5f97\u5230\u5404\u4e2a\u7279\u5f81\u7684\u6743\u503c\u7cfb\u6570\uff0c\u6839\u636e\u6743\u503c\u7cfb\u6570\u4ece\u5927\u5230\u5c0f\u6765\u9009\u62e9\u7279\u5f81\u3002\u5e38\u7528\u5982\u57fa\u4e8eL1\u6b63\u5219\u9879\u7684\u903b\u8f91\u56de\u5f52\u3001XGBOOST\u7279\u5f81\u91cd\u8981\u6027\u9009\u62e9\u7279\u5f81\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-143.png\" alt=\"\" class=\"wp-image-5970\" width=\"493\" height=\"305\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-143.png 866w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-143-300x186.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-143-768x477.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-143-830x516.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-143-230x143.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-143-350x217.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-143-480x298.png 480w\" sizes=\"(max-width: 493px) 100vw, 493px\" \/><\/figure><\/div>\n\n\n\n<ul><li>\u7279\u5f81\u964d\u7ef4<\/li><\/ul>\n\n\n\n<p>\u5982\u679c\u7279\u5f81\u9009\u62e9\u540e\u7684\u7279\u5f81\u6570\u76ee\u4ecd\u592a\u591a\uff0c\u8fd9\u79cd\u60c5\u5f62\u4e0b\u5e38\u4f1a\u6709\u6570\u636e\u6837\u672c\u7a00\u758f\u3001\u8ddd\u79bb\u8ba1\u7b97\u56f0\u96be\u7684\u95ee\u9898\uff08\u79f0\u4e3a \u201c\u7ef4\u6570\u707e\u96be\u201d\uff09\uff0c\u53ef\u4ee5\u901a\u8fc7\u7279\u5f81\u964d\u7ef4\u89e3\u51b3\u3002\u5e38\u7528\u7684\u964d\u7ef4\u65b9\u6cd5\u6709\uff1a\u4e3b\u6210\u5206\u5206\u6790\u6cd5\uff08PCA\uff09\u7b49\u3002<\/p>\n\n\n\n<p><strong>3 \u6a21\u578b\u8bad\u7ec3<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u6a21\u578b\u8bad\u7ec3\u662f\u5229\u7528\u65e2\u5b9a\u7684\u6a21\u578b\u65b9\u6cd5\u53bb\u5b66\u4e60\u6570\u636e\u7ecf\u9a8c\u7684\u8fc7\u7a0b\uff0c\u8fd9\u8fc7\u7a0b\u8fd8\u9700\u8981\u7ed3\u5408\u6a21\u578b\u8bc4\u4f30\u4ee5\u8c03\u6574\u7b97\u6cd5\u7684\u8d85\u53c2\u6570\uff0c\u6700\u7ec8\u9009\u62e9\u8868\u73b0\u8f83\u4f18\u7684\u6a21\u578b\u3002<\/p>\n\n\n\n<p><strong>3.1 \u6570\u636e\u96c6\u5212\u5206<\/strong><\/p>\n\n\n\n<p>\u8bad\u7ec3\u6a21\u578b\u524d\uff0c\u5e38\u7528\u7684HoldOut\u9a8c\u8bc1\u6cd5\uff08\u6b64\u5916\u8fd8\u6709\u7559\u4e00\u6cd5\u3001k\u6298\u4ea4\u53c9\u9a8c\u8bc1\u7b49\u65b9\u6cd5\uff09\uff0c\u628a\u6570\u636e\u96c6\u5206\u4e3a\u8bad\u7ec3\u96c6\u548c\u6d4b\u8bd5\u96c6\uff0c\u5e76\u53ef\u518d\u5bf9\u8bad\u7ec3\u96c6\u8fdb\u4e00\u6b65\u7ec6\u5206\u4e3a\u8bad\u7ec3\u96c6\u548c\u9a8c\u8bc1\u96c6\uff0c\u4ee5\u65b9\u4fbf\u8bc4\u4f30\u6a21\u578b\u7684\u6027\u80fd\u3002<br>\u2460 \u8bad\u7ec3\u96c6\uff08training set\uff09\uff1a\u7528\u4e8e\u8fd0\u884c\u5b66\u4e60\u7b97\u6cd5\uff0c\u8bad\u7ec3\u6a21\u578b\u3002<br>\u2461 \u5f00\u53d1\u9a8c\u8bc1\u96c6\uff08development set\uff09\u7528\u4e8e\u8c03\u6574\u8d85\u53c2\u6570\u3001\u9009\u62e9\u7279\u5f81\u7b49\uff0c\u4ee5\u9009\u62e9\u5408\u9002\u6a21\u578b\u3002<br>\u2462 \u6d4b\u8bd5\u96c6\uff08test set\uff09\u53ea\u7528\u4e8e\u8bc4\u4f30\u5df2\u9009\u62e9\u6a21\u578b\u7684\u6027\u80fd\uff0c\u4f46\u4e0d\u4f1a\u636e\u6b64\u6539\u53d8\u5b66\u4e60\u7b97\u6cd5\u6216\u53c2\u6570\u3002<\/p>\n\n\n\n<p><br><strong>3.2 \u6a21\u578b\u65b9\u6cd5\u9009\u62e9<\/strong><br>\u7ed3\u5408\u5f53\u524d\u4efb\u52a1\u53ca\u6570\u636e\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u6a21\u578b\u65b9\u6cd5\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u5982\u4e0b\u56fe \uff0cscikit-learn\u6a21\u578b\u65b9\u6cd5\u7684\u9009\u62e9\u3002\u6b64\u5916\u8fd8\u53ef\u4ee5\u7ed3\u5408\u591a\u4e2a\u6a21\u578b\u505a\u6a21\u578b\u878d\u5408\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144-1024x558.png\" alt=\"\" class=\"wp-image-5971\" width=\"542\" height=\"295\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144-1024x558.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144-300x163.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144-768x418.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144-830x452.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144-230x125.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144-350x191.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144-480x262.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-144.png 1406w\" sizes=\"(max-width: 542px) 100vw, 542px\" \/><\/figure><\/div>\n\n\n\n<p><strong>3.3 \u8bad\u7ec3\u8fc7\u7a0b<\/strong><\/p>\n\n\n\n<p>\u6a21\u578b\u7684\u8bad\u7ec3\u8fc7\u7a0b\u5373\u5b66\u4e60\u6570\u636e\u7ecf\u9a8c\u5f97\u5230\u8f83\u4f18\u6a21\u578b\u53ca\u5bf9\u5e94\u53c2\u6570\uff08\u5982\u795e\u7ecf\u7f51\u7edc\u6700\u7ec8\u5b66\u4e60\u5230\u8f83\u4f18\u7684\u6743\u91cd\u503c\uff09\u3002\u6574\u4e2a\u8bad\u7ec3\u8fc7\u7a0b\u8fd8\u9700\u8981\u901a\u8fc7\u8c03\u8282\u8d85\u53c2\u6570\uff08\u5982\u795e\u7ecf\u7f51\u7edc\u5c42\u6570\u3001\u68af\u5ea6\u4e0b\u964d\u7684\u5b66\u4e60\u7387)\u8fdb\u884c\u63a7\u5236\u4f18\u5316\u7684\u3002<br>\u8c03\u8282\u8d85\u53c2\u6570\u662f\u4e00\u4e2a\u57fa\u4e8e\u6570\u636e\u96c6\u3001\u6a21\u578b\u548c\u8bad\u7ec3\u8fc7\u7a0b\u7ec6\u8282\u7684\u5b9e\u8bc1\u8fc7\u7a0b\uff0c\u9700\u8981\u57fa\u4e8e\u5bf9\u7b97\u6cd5\u7684\u539f\u7406\u7406\u89e3\u548c\u7ecf\u9a8c\uff0c\u501f\u52a9\u6a21\u578b\u5728\u9a8c\u8bc1\u96c6\u7684\u8bc4\u4f30\u8fdb\u884c\u53c2\u6570\u8c03\u4f18\uff0c\u6b64\u5916\u8fd8\u6709\u81ea\u52a8\u8c03\u53c2\u6280\u672f\uff1a\u7f51\u683c\u641c\u7d22\u3001\u968f\u673a\u641c\u7d22\u53ca\u8d1d\u53f6\u65af\u4f18\u5316\u7b49\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145-1024x512.png\" alt=\"\" class=\"wp-image-5972\" width=\"545\" height=\"273\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145-1024x512.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145-300x150.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145-768x384.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145-830x415.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145-230x115.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145-350x175.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145-480x240.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-145.png 1460w\" sizes=\"(max-width: 545px) 100vw, 545px\" \/><\/figure><\/div>\n\n\n\n<p><strong>4 \u6a21\u578b\u8bc4\u4f30<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u673a\u5668\u5b66\u4e60\u7684\u76f4\u63a5\u76ee\u7684\u662f\u5b66\uff08\u62df\u5408\uff09\u5230\u201c\u597d\u201d\u7684\u6a21\u578b\uff0c\u4e0d\u4ec5\u4ec5\u662f\u5b66\u4e60\u8fc7\u7a0b\u4e2d\u5bf9\u8bad\u7ec3\u6570\u636e\u7684\u826f\u597d\u7684\u5b66\u4e60\u9884\u6d4b\u80fd\u529b\uff0c\u6839\u672c\u4e0a\u5728\u4e8e\u8981\u5bf9\u65b0\u6570\u636e\u80fd\u6709\u5f88\u597d\u7684\u9884\u6d4b\u80fd\u529b\uff08\u6cdb\u5316\u80fd\u529b\uff09\uff0c\u6240\u4ee5\u5ba2\u89c2\u5730\u8bc4\u4f30\u6a21\u578b\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002\u6280\u672f\u4e0a\u5e38\u6839\u636e\u8bad\u7ec3\u96c6\u53ca\u6d4b\u8bd5\u96c6\u7684\u6307\u6807\u8868\u73b0\uff0c\u8bc4\u4f30\u6a21\u578b\u7684\u6027\u80fd\u3002<\/p>\n\n\n\n<p><strong>4.1 \u8bc4\u4f30\u6307\u6807<\/strong><\/p>\n\n\n\n<ul><li>\u8bc4\u4f30\u5206\u7c7b\u6a21\u578b<\/li><\/ul>\n\n\n\n<p>\u5e38\u7528\u7684\u8bc4\u4f30\u6807\u51c6\u6709\u67e5\u51c6\u7387P\u3001\u67e5\u5168\u7387R\u53ca\u4e24\u8005\u8c03\u548c\u5e73\u5747F1-score \u7b49\uff0c\u5e76\u7531\u6df7\u6dc6\u77e9\u9635\u7684\u7edf\u8ba1\u76f8\u5e94\u7684\u4e2a\u6570\u8ba1\u7b97\u51fa\u6570\u503c\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146-1024x263.png\" alt=\"\" class=\"wp-image-5973\" width=\"528\" height=\"135\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146-1024x263.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146-300x77.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146-768x197.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146-830x213.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146-230x59.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146-350x90.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146-480x123.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-146.png 1424w\" sizes=\"(max-width: 528px) 100vw, 528px\" \/><\/figure><\/div>\n\n\n\n<p>\u67e5\u51c6\u7387\u662f\u6307\u5206\u7c7b\u5668\u5206\u7c7b\u6b63\u786e\u7684\u6b63\u6837\u672c\uff08TP\uff09\u7684\u4e2a\u6570\u5360\u8be5\u5206\u7c7b\u5668\u6240\u6709\u9884\u6d4b\u4e3a\u6b63\u6837\u672c\u4e2a\u6570\uff08TP+FP\uff09\u7684\u6bd4\u4f8b\uff1b<br>\u67e5\u5168\u7387\u662f\u6307\u5206\u7c7b\u5668\u5206\u7c7b\u6b63\u786e\u7684\u6b63\u6837\u672c\u4e2a\u6570\uff08TP\uff09\u5360\u6240\u6709\u7684\u6b63\u6837\u672c\u4e2a\u6570\uff08TP+FN\uff09\u7684\u6bd4\u4f8b\u3002<br>F1-score\u662f\u67e5\u51c6\u7387P\u3001\u67e5\u5168\u7387R\u7684\u8c03\u548c\u5e73\u5747\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-147.png\" alt=\"\" class=\"wp-image-5974\" width=\"166\" height=\"75\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-147.png 344w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-147-300x136.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-147-230x104.png 230w\" sizes=\"(max-width: 166px) 100vw, 166px\" \/><\/figure><\/div>\n\n\n\n<ul><li>\u8bc4\u4f30\u56de\u5f52\u6a21\u578b<\/li><\/ul>\n\n\n\n<p>\u5e38\u7528\u7684\u8bc4\u4f30\u6307\u6807\u6709MSE\u5747\u65b9\u8bef\u5dee\u7b49\u3002\u53cd\u9988\u7684\u662f\u9884\u6d4b\u6570\u503c\u4e0e\u5b9e\u9645\u503c\u7684\u62df\u5408\u60c5\u51b5\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-148.png\" alt=\"\" class=\"wp-image-5975\" width=\"240\" height=\"80\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-148.png 552w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-148-300x100.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-148-550x184.png 550w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-148-230x77.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-148-350x117.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-148-480x160.png 480w\" sizes=\"(max-width: 240px) 100vw, 240px\" \/><\/figure><\/div>\n\n\n\n<ul><li>\u8bc4\u4f30\u805a\u7c7b\u6a21\u578b<\/li><\/ul>\n\n\n\n<p>\u53ef\u5206\u4e3a\u4e24\u7c7b\u65b9\u5f0f\uff0c\u4e00\u7c7b\u5c06\u805a\u7c7b\u7ed3\u679c\u4e0e\u67d0\u4e2a\u201c\u53c2\u8003\u6a21\u578b\u201d\u7684\u7ed3\u679c\u8fdb\u884c\u6bd4\u8f83\uff0c\u79f0\u4e3a\u201c\u5916\u90e8\u6307\u6807\u201d\uff08external index\uff09\uff1a\u5982\u5170\u5fb7\u6307\u6570\uff0cFM\u6307\u6570\u7b49\u3002\u53e6\u4e00\u7c7b\u662f\u76f4\u63a5\u8003\u5bdf\u805a\u7c7b\u7ed3\u679c\u800c\u4e0d\u5229\u7528\u4efb\u4f55\u53c2\u8003\u6a21\u578b\uff0c\u79f0\u4e3a\u201c\u5185\u90e8\u6307\u6807\u201d\uff08internal index\uff09\uff1a\u5982\u7d27\u51d1\u5ea6\u3001\u5206\u79bb\u5ea6\u7b49\u3002<\/p>\n\n\n\n<p><strong>4.2 \u6a21\u578b\u8bc4\u4f30\u53ca\u4f18\u5316<\/strong><\/p>\n\n\n\n<p>\u8bad\u7ec3\u673a\u5668\u5b66\u4e60\u6a21\u578b\u6240\u4f7f\u7528\u7684\u6570\u636e\u6837\u672c\u96c6\u79f0\u4e4b\u4e3a\u8bad\u7ec3\u96c6\uff08training set\uff09\uff0c \u5728\u8bad\u7ec3\u6570\u636e\u7684\u8bef\u5dee\u79f0\u4e4b\u4e3a\u8bad\u7ec3\u8bef\u5dee\uff08training error\uff09\uff0c\u5728\u6d4b\u8bd5\u6570\u636e\u4e0a\u7684\u8bef\u5dee\uff0c\u79f0\u4e4b\u4e3a\u6d4b\u8bd5\u8bef\u5dee\uff08test error\uff09\u6216\u6cdb\u5316\u8bef\u5dee \uff08generalization error\uff09\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149-1024x298.png\" alt=\"\" class=\"wp-image-5976\" width=\"569\" height=\"165\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149-1024x298.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149-300x87.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149-768x223.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149-830x241.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149-230x67.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149-350x102.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149-480x140.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-149.png 1486w\" sizes=\"(max-width: 569px) 100vw, 569px\" \/><\/figure><\/div>\n\n\n\n<p>\u63cf\u8ff0\u6a21\u578b\u62df\u5408\uff08\u5b66\u4e60\uff09\u7a0b\u5ea6\u5e38\u7528\u6b20\u62df\u5408\u3001\u62df\u5408\u826f\u597d\u3001\u8fc7\u62df\u5408\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8bad\u7ec3\u8bef\u5dee\u53ca\u6d4b\u8bd5\u8bef\u5dee\u8bc4\u4f30\u6a21\u578b\u7684\u62df\u5408\u7a0b\u5ea6\u3002\u4ece\u6574\u4f53\u8bad\u7ec3\u8fc7\u7a0b\u6765\u770b\uff0c\u6b20\u62df\u5408\u65f6\u8bad\u7ec3\u8bef\u5dee\u548c\u6d4b\u8bd5\u8bef\u5dee\u5747\u8f83\u9ad8\uff0c\u968f\u7740\u8bad\u7ec3\u65f6\u95f4\u53ca\u6a21\u578b\u590d\u6742\u5ea6\u7684\u589e\u52a0\u800c\u4e0b\u964d\u3002\u5728\u5230\u8fbe\u4e00\u4e2a\u62df\u5408\u6700\u4f18\u7684\u4e34\u754c\u70b9\u4e4b\u540e\uff0c\u8bad\u7ec3\u8bef\u5dee\u4e0b\u964d\uff0c\u6d4b\u8bd5\u8bef\u5dee\u4e0a\u5347\uff0c\u8fd9\u4e2a\u65f6\u5019\u5c31\u8fdb\u5165\u4e86\u8fc7\u62df\u5408\u533a\u57df\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150-1024x418.png\" alt=\"\" class=\"wp-image-5977\" width=\"549\" height=\"223\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150-1024x418.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150-300x122.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150-768x313.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150-830x338.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150-230x94.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150-350x143.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150-480x196.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-150.png 1334w\" sizes=\"(max-width: 549px) 100vw, 549px\" \/><\/figure><\/div>\n\n\n\n<p>\u6b20\u62df\u5408\u662f\u6307\u76f8\u8f83\u4e8e\u6570\u636e\u800c\u8a00\u6a21\u578b\u7ed3\u6784\u8fc7\u4e8e\u7b80\u5355\uff0c\u4ee5\u81f3\u4e8e\u65e0\u6cd5\u5b66\u4e60\u5230\u6570\u636e\u4e2d\u7684\u89c4\u5f8b\u3002<br>\u8fc7\u62df\u5408\u662f\u6307\u6a21\u578b\u53ea\u8fc7\u5206\u5730\u5339\u914d\u8bad\u7ec3\u6570\u636e\u96c6\uff0c\u4ee5\u81f3\u4e8e\u5bf9\u65b0\u6570\u636e\u65e0\u826f\u597d\u5730\u62df\u5408\u53ca\u9884\u6d4b\u3002\u5176\u672c\u8d28\u662f\u8f83\u590d\u6742\u6a21\u578b\u4ece\u8bad\u7ec3\u6570\u636e\u4e2d\u5b66\u4e60\u5230\u4e86\u7edf\u8ba1\u566a\u58f0\u5bfc\u81f4\u7684\u3002<br>\u5206\u6790\u6a21\u578b\u62df\u5408\u6548\u679c\u5e76\u5bf9\u6a21\u578b\u8fdb\u884c\u4f18\u5316\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u6709\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151-1024x531.png\" alt=\"\" class=\"wp-image-5978\" width=\"533\" height=\"276\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151-1024x531.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151-300x155.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151-768x398.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151-830x430.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151-230x119.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151-350x181.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151-480x249.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-151.png 1474w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><\/figure><\/div>\n\n\n\n<p><strong>5 \u6a21\u578b\u51b3\u7b56<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u51b3\u7b56\u5e94\u7528\u662f\u673a\u5668\u5b66\u4e60\u6700\u7ec8\u76ee\u7684\uff0c\u5bf9\u6a21\u578b\u9884\u6d4b\u4fe1\u606f\u52a0\u4ee5\u5206\u6790\u89e3\u91ca\uff0c\u5e76\u5e94\u7528\u4e8e\u5b9e\u9645\u7684\u5de5\u4f5c\u9886\u57df\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5de5\u7a0b\u4e0a\u662f\u7ed3\u679c\u5bfc\u5411\uff0c\u6a21\u578b\u5728\u7ebf\u4e0a\u8fd0\u884c\u7684\u6548\u679c\u76f4\u63a5\u51b3\u5b9a\u6a21\u578b\u7684\u6210\u8d25\uff0c\u4e0d\u4ec5\u4ec5\u5305\u62ec\u5176\u51c6\u786e\u7a0b\u5ea6\u3001\u8bef\u5dee\u7b49\u60c5\u51b5\uff0c\u8fd8\u5305\u62ec\u5176\u8fd0\u884c\u7684\u901f\u5ea6(\u65f6\u95f4\u590d\u6742\u5ea6)\u3001\u8d44\u6e90\u6d88\u8017\u7a0b\u5ea6\uff08\u7a7a\u95f4\u590d\u6742\u5ea6\uff09\u3001\u7a33\u5b9a\u6027\u7684\u7efc\u5408\u8003\u8651\u3002<\/p>\n\n\n\n<p><strong>6 \u673a\u5668\u5b66\u4e60\u9879\u76ee\u5b9e\u6218(\u6570\u636e\u6316\u6398)<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>6.1 \u9879\u76ee\u4ecb\u7ecd<\/strong><\/p>\n\n\n\n<p>\u9879\u76ee\u7684\u5b9e\u9a8c\u6570\u636e\u6765\u6e90\u8457\u540d\u7684UCI\u673a\u5668\u5b66\u4e60\u6570\u636e\u5e93\uff0c\u8be5\u6570\u636e\u5e93\u6709\u5927\u91cf\u7684\u4eba\u5de5\u667a\u80fd\u6570\u636e\u6316\u6398\u6570\u636e\u3002\u672c\u4f8b\u9009\u7528\u7684\u662fsklearn\u4e0a\u7684\u6570\u636e\u96c6\u7248\u672c\uff1aBreast Cancer Wisconsin DataSet(\u5a01\u65af\u5eb7\u661f\u5dde\u4e73\u817a\u764c\u6570\u636e\u96c6)\uff0c\u8fd9\u4e9b\u6570\u636e\u6765\u6e90\u7f8e\u56fd\u5a01\u65af\u5eb7\u661f\u5927\u5b66\u533b\u9662\u7684\u4e34\u5e8a\u75c5\u4f8b\u62a5\u544a\uff0c\u6bcf\u6761\u6837\u672c\u670930\u4e2a\u7279\u5f81\u5c5e\u6027\uff0c\u6807\u7b7e\u4e3a\u662f\u5426\u826f\u6027\u80bf\u7624\uff0c\u5373\u6709\u76d1\u7763\u5206\u7c7b\u9884\u6d4b\u7684\u95ee\u9898\u3002 \u9879\u76ee\u7684\u5efa\u6a21\u601d\u8def\u662f\u901a\u8fc7\u5206\u6790\u4e73\u817a\u764c\u6570\u636e\u96c6\u6570\u636e\uff0c\u7279\u5f81\u5de5\u7a0b\uff0c\u6784\u5efa\u903b\u8f91\u56de\u5f52\u6a21\u578b\u5b66\u4e60\u6570\u636e\uff0c\u9884\u6d4b\u6837\u672c\u7684\u7c7b\u522b\u662f\u5426\u4e3a\u826f\u6027\u80bf\u7624\u3002<\/p>\n\n\n\n<p><strong>6.2 \u4ee3\u7801\u5b9e\u73b0<\/strong><\/p>\n\n\n\n<p>\u5bfc\u5165\u76f8\u5173\u7684Python\u5e93\uff0c\u52a0\u8f7dcancer\u6570\u636e\u96c6\uff0c\u67e5\u770b\u6570\u636e\u4ecb\u7ecd\uff0c \u5e76\u8f6c\u4e3aDataFrame\u683c\u5f0f\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import numpy as np  \nimport pandas as pd\nimport matplotlib.pyplot as plt\n\nfrom keras.models import Sequential\nfrom keras.layers import Dense, Dropout\nfrom keras.utils import plot_model\nfrom sklearn import datasets\nfrom sklearn.preprocessing import StandardScaler\nfrom sklearn.model_selection import train_test_split\nfrom sklearn.metrics import precision_score, recall_score, f1_score\n<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">dataset_cancer = datasets.load_breast_cancer()    # \u52a0\u8f7d\u764c\u7ec6\u80de\u6570\u636e\u96c6\n\nprint(dataset_cancer['DESCR'])\n\ndf = pd.DataFrame(dataset_cancer.data, columns=dataset_cancer.feature_names)  \n\ndf['label'] = dataset_cancer.target\n\nprint(df.shape)\n\ndf.head()<\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"239\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152-1024x239.png\" alt=\"\" class=\"wp-image-5981\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152-1024x239.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152-300x70.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152-768x180.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152-830x194.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152-230x54.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152-350x82.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152-480x112.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-152.png 1420w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u63a2\u7d22\u6027\u6570\u636e\u5206\u6790EDA\uff1a\u4f7f\u7528pandas_profiling\u5e93\u5206\u6790\u6570\u636e\u6570\u503c\u60c5\u51b5\uff0c\u7f3a\u5931\u7387\u53ca\u76f8\u5173\u6027\u7b49\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import pandas_profiling\n\npandas_profiling.ProfileReport(df, title='Breast Cancer DataSet EDA')<\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153-1024x495.png\" alt=\"\" class=\"wp-image-5982\" width=\"492\" height=\"238\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153-1024x495.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153-300x145.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153-768x371.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153-830x401.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153-230x111.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153-350x169.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153-480x232.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-153.png 1150w\" sizes=\"(max-width: 492px) 100vw, 492px\" \/><\/figure><\/div>\n\n\n\n<p>\u7279\u5f81\u5de5\u7a0b\u65b9\u9762\u4e3b\u8981\u7684\u5206\u6790\u53ca\u5904\u7406\u6709\uff1a<\/p>\n\n\n\n<ul><li>\u5206\u6790\u7279\u5f81\u65e0\u660e\u663e\u5f02\u5e38\u503c\u53ca\u7f3a\u5931\u7684\u60c5\u51b5\uff0c\u65e0\u9700\u5904\u7406\uff1b<\/li><li>\u5df2\u6709mean\/standard error\u7b49\u884d\u751f\u7279\u5f81\uff0c\u65e0\u9700\u7279\u5f81\u884d\u751f\uff1b<\/li><li>\u7ed3\u5408\u76f8\u5173\u6027\u7b49\u6307\u6807\u505a\u7279\u5f81\u9009\u62e9\uff08\u8fc7\u6ee4\u6cd5\uff09\uff1b<\/li><li>\u5bf9\u7279\u5f81\u8fdb\u884c\u6807\u51c6\u5316\u4ee5\u52a0\u901f\u6a21\u578b\u5b66\u4e60\u8fc7\u7a0b\uff1b<\/li><\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u7b5b\u9009\u76f8\u5173\u6027>0.99\u7684\u7279\u5f81\u6e05\u5355\u5217\u8868\u53ca\u6807\u7b7e\ndrop_feas = ['label','worst_radius','mean_radius']\n\n# \u9009\u62e9\u6807\u7b7ey\u53ca\u7279\u5f81x\ny = df.label\nx = df.drop(drop_feas,axis=1)  # \u5220\u9664\u76f8\u5173\u6027\u5f3a\u7279\u5f81\u53ca\u6807\u7b7e\u5217\n\n# holdout\u9a8c\u8bc1\u6cd5\uff1a \u63093\uff1a7\u5212\u5206\u6d4b\u8bd5\u96c6 \u8bad\u7ec3\u96c6\nx_train, x_test, y_train, y_test = train_test_split(x, y, test_size=0.3)\n\n# \u7279\u5f81z-score \u6807\u51c6\u5316\nsc = StandardScaler()\n\nx_train = sc.fit_transform(x_train)  # \u6ce8\uff1a\u8bad\u7ec3\u96c6\u6d4b\u8bd5\u96c6\u8981\u5206\u522b\u6807\u51c6\u5316\uff0c\u4ee5\u514d\u6d4b\u8bd5\u96c6\u4fe1\u606f\u6cc4\u9732\u5230\u6a21\u578b\u8bad\u7ec3\nx_test = sc.transform(x_test) <\/pre>\n\n\n\n<p>\u6a21\u578b\u8bad\u7ec3\uff1a\u4f7f\u7528keras\u642d\u5efa\u903b\u8f91\u56de\u5f52\u6a21\u578b\uff0c\u8bad\u7ec3\u6a21\u578b\uff0c\u89c2\u5bdf\u6a21\u578b\u8bad\u7ec3\u96c6\u53ca\u9a8c\u8bc1\u96c6\u7684loss\u635f\u5931<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">_dim = x_train.shape[1]   # \u8f93\u5165\u6a21\u578b\u7684\u7279\u5f81\u6570\n\n# LR\u903b\u8f91\u56de\u5f52\u6a21\u578b\nmodel = Sequential()   \n\nmodel.add(Dense(1, input_dim=_dim, activation='sigmoid',bias_initializer='uniform'))  # \u6dfb\u52a0\u7f51\u7edc\u5c42\uff0c\u6fc0\u6d3b\u51fd\u6570sigmoid\n\nmodel.summary()\n\nplot_model(model,show_shapes=True)\n<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">model.compile(optimizer='adam', loss='binary_crossentropy')  #\u6a21\u578b\u7f16\u8bd1\uff1a\u9009\u62e9\u4ea4\u53c9\u71b5\u635f\u5931\u51fd\u6570\u53caadam\u68af\u5ea6\u4e0b\u964d\u6cd5\u4f18\u5316\u7b97\u6cd5\n\nmodel.fit(x, y, validation_split=0.3, epochs=200)   # \u6a21\u578b\u8fed\u4ee3\u8bad\u7ec3: validation_split\u6bd4\u4f8b0.3, \u8fed\u4ee3epochs200\u6b21\n\n# \u6a21\u578b\u8bad\u7ec3\u96c6\u53ca\u9a8c\u8bc1\u96c6\u7684\u635f\u5931\n\nplt.figure()\n\nplt.plot(model.history.history['loss'],'b',label='Training loss')\n\nplt.plot(model.history.history['val_loss'],'r',label='Validation val_loss')\n\nplt.title('Traing and Validation loss')\n\nplt.legend()\n<\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154-1024x663.png\" alt=\"\" class=\"wp-image-5983\" width=\"477\" height=\"308\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154-1024x663.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154-300x194.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154-768x497.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154-830x537.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154-230x149.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154-350x227.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154-480x311.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-154.png 1298w\" sizes=\"(max-width: 477px) 100vw, 477px\" \/><\/figure><\/div>\n\n\n\n<p>\u4ee5\u6d4b\u8bd5\u96c6F1-score\u7b49\u6307\u6807\u7684\u8868\u73b0\uff0c\u8bc4\u4f30\u6a21\u578b\u7684\u6cdb\u5316\u80fd\u529b\u3002\u6700\u7ec8\u6d4b\u8bd5\u96c6\u7684f1-score\u670988%\uff0c\u6709\u8f83\u597d\u7684\u6a21\u578b\u8868\u73b0\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155-1024x122.png\" alt=\"\" class=\"wp-image-5984\" width=\"577\" height=\"69\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155-1024x122.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155-300x36.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155-768x92.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155-830x99.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155-230x27.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155-350x42.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155-480x57.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/05\/\u56fe\u7247-155.png 1460w\" sizes=\"(max-width: 577px) 100vw, 577px\" \/><\/figure><\/div>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">def model_metrics(model, x, y):\n    \"\"\"\n\n    \u8bc4\u4f30\u6307\u6807\n\n    \"\"\"\n    yhat = model.predict(x).round()  # \u6a21\u578b\u9884\u6d4byhat\uff0c\u9884\u6d4b\u9608\u503c\u6309\u9ed8\u8ba40.5\u5212\u5206\n\n    result = {\n              'f1_score': f1_score(y, yhat),\n\n              'precision':precision_score(y, yhat),\n\n              'recall':recall_score(y, yhat)\n             }\n\n    return result\n\n# \u6a21\u578b\u8bc4\u4f30\u7ed3\u679c\n\nprint(\"TRAIN\")\n\nprint(model_metrics(model, x_train, y_train))\n\nprint(\"TEST\")\n\nprint(model_metrics(model, x_test, y_test))<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u968f\u7740\u4eba\u5de5\u667a\u80fd\u65f6\u4ee3\u7684\u5230\u6765\uff0c\u673a\u5668\u5b66\u4e60\u5df2\u6210\u4e3a\u89e3\u51b3\u95ee\u9898\u7684\u5173\u952e\u5de5\u5177\u3002\u6211\u4eec\u63a5\u4e0b\u6765\u4f1a\u8be6\u7ec6\u4ecb\u7ecd\u673a\u5668\u5b66\u4e60\u5982\u4f55\u5e94\u7528\u5230\u5b9e\u9645\u95ee\u9898\uff0c\u5e76\u6982 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/5957"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5957"}],"version-history":[{"count":4,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/5957\/revisions"}],"predecessor-version":[{"id":5985,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/5957\/revisions\/5985"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}