{"id":116235,"date":"2019-05-22T11:34:25","date_gmt":"2019-05-22T03:34:25","guid":{"rendered":"http:\/\/www.fagao.me\/?p=116235"},"modified":"2019-05-22T11:34:25","modified_gmt":"2019-05-22T03:34:25","slug":"%e4%b8%9a%e7%95%8c-%e6%8e%a2%e8%ae%a8seo%e6%8a%80%e6%9c%af%e9%97%ae%e9%a2%98%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%9c%ba%e5%99%a8%e5%ad%a6%e4%b9%a0%e9%a2%84%e6%b5%8b%e8%b0%b7%e6%ad%8c%e6%90%9c","status":"publish","type":"post","link":"https:\/\/www.fagao.me\/p\/116235.htm","title":{"rendered":"\u4e1a\u754c | \u63a2\u8ba8SEO\u6280\u672f\u95ee\u9898,\u5982\u4f55\u4f7f\u7528\u673a\u5668\u5b66\u4e60\u9884\u6d4b\u8c37\u6b4c\u641c\u7d22\u6392\u540d?"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.fagao.me\/images\/uploads\/2017_006.jpg\" alt=\"\"><\/p>\n<div class=\"articleend\"><\/div>\n<p>\u9009\u81ea SearchEngineLand<\/p>\n<p><strong>\u4f5c\u8005\uff1a<strong><\/strong>JR Oakes<strong><\/strong><\/strong><\/p>\n<p><strong>\u673a\u5668\u4e4b\u5fc3\u7f16\u8bd1<\/strong><\/p>\n<p><strong>\u53c2\u4e0e\uff1a\u65e0\u6211\u83bd\u83bd\u3001\u76db\u5a01<\/strong><\/p>\n<p>\u5728 2015 \u5e74\u672b\uff0cJR Oakes \u548c\u4ed6\u7684\u540c\u4e8b\u5229\u7528\u673a\u5668\u5b66\u4e60\u505a\u4e86\u4e00\u4e2a\u5b9e\u9a8c\uff0c\u8bd5\u56fe\u9884\u6d4b\u67d0\u4e2a\u7279\u5b9a\u7f51\u9875\u7684\u8c37\u6b4c\u641c\u7d22\u6392\u540d\u3002\u4e0b\u9762\u8fd9\u7bc7\u6587\u7ae0\u662f\u4ed6\u4eec\u7684\u53d1\u73b0\uff0c\u4ed6\u4eec\u5e0c\u671b\u8fd9\u4e9b\u6210\u679c\u80fd\u591f\u5e2e\u52a9\u5230 SEO 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href=\"https:\/\/www.fagao.me\/p\/t\/121\">\u641c\u7d22\u5f15\u64ce<\/a>\u4f18\u5316\uff09\u3002\u53bb\u5e74\u665a\u4e9b\u65f6\u5019\uff0c\u6211\u548c\u6211\u7684\u540c\u4e8b\u5f00\u59cb\u4e86\u4e00\u9879\u5b9e\u9a8c\uff0c\u6211\u4eec\u5c06\u4e00\u4e2a\u6d41\u884c\u7684\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u5e94\u7528\u5230\u4e86\u9884\u6d4b\u8c37\u6b4c\u5bf9\u7279\u5b9a\u7f51\u9875\u7684\u6392\u540d\u4e2d\u3002\u6700\u7ec8\u6211\u4eec\u5f97\u5230\u4e86\u4e00\u4e2a 41% \u6b63\u786e\u80af\u5b9a\u548c 41% \u6b63\u786e\u5426\u5b9a\u7684\u6570\u636e\u96c6\u3002<\/p>\n<p>\u5728\u63a5\u4e0b\u6765\u7684\u51e0\u6bb5\u91cc\uff0c\u6211\u5c06\u4f1a\u5e26\u4f60\u8fc7\u4e00\u904d\u6211\u4eec\u7684\u5b9e\u9a8c\uff0c\u6211\u8fd8\u4f1a\u8ba8\u8bba\u4e00\u4e9b\u5bf9 SEO \u5f88\u91cd\u8981\u7684\u6280\u672f\u95ee\u9898\u3002<\/p>\n<p><strong>\u6211\u4eec\u7684\u5b9e\u9a8c<\/strong><\/p>\n<p>\u5728 2015 \u5e74\u5e74\u672b\u7684\u65f6\u5019\uff0c\u6211\u4eec\u5f00\u59cb\u8d8a\u6765\u8d8a\u591a\u5730\u542c\u8bf4\u673a\u5668\u5b66\u4e60\u4ee5\u53ca\u5b83\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u4e0a\u7684\u80fd\u529b\u3002\u6211\u4eec\u8d8a\u8ba4\u771f\u5de5\u4f5c\uff0c\u5b83\u5c31\u53d8\u5f97\u8d8a\u4e13\u4e1a\uff0c\u800c\u4e14\u5f88\u5feb\u5b83\u5c31\u4f1a\u5e2e\u52a9\u6211\u4eec\u8fd0\u8f6c\u8fd9\u4e2a\u4e16\u754c\u3002<\/p>\n<p>\u90a3\u4e2a\u65f6\u5019\uff0c\u6211\u4eec\u9047\u5230\u4e86\u624d\u534e\u6a2a\u6ea2\u7684\u5df4\u897f\u6570\u636e\u79d1\u5b66\u5bb6 Alejandro Simkievich\u3002\u6700\u6709\u8da3\u7684\u4e8b\u60c5\u662f\u4ed6\u6b63\u5728\u7814\u7a76\u641c\u7d22\u9886\u57df\u7684\u76f8\u5173\u6027\u548c\u8f6c\u5316\u7387\u4f18\u5316\uff08CRO\uff09\u7b49\u95ee\u9898\uff0c\u5e76\u4e14\u6b63\u5728\u51c6\u5907\u53c2\u52a0 Kaggle \u7ade\u8d5b\u3002\uff08Kaggle 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\u51b3\u7b56\u3002<\/p>\n<p>\u6211\u4eec\u51b3\u5b9a\u8bd5\u8bd5\u80fd\u5426\u4f7f\u7528\u6293\u53d6\u5de5\u5177\u3001\u6392\u540d\u8ffd\u8e2a\u3001\u94fe\u63a5\u5de5\u5177\u548c\u5176\u4ed6\u4e00\u4e9b\u5de5\u5177\u7684\u53ef\u7528\u6570\u636e\u6765\u9884\u6d4b\u7f51\u9875\u6392\u540d\u3002\u6211\u4eec\u77e5\u9053\u5b8c\u5168\u9884\u6d4b\u6b63\u786e\u7684\u53ef\u80fd\u6027\u975e\u5e38\u4f4e\uff0c\u4f46\u6211\u4eec\u4ecd\u80fd\u5728\u5229\u7528\u673a\u5668\u5b66\u4e60\u4e0a\u83b7\u5f97\u4e00\u4e2a\u4e86\u4e0d\u8d77\u7684\u6210\u529f\u3002<\/p>\n<p><strong>\u6570\u636e<\/strong><\/p>\n<p>\u673a\u5668\u5b66\u4e60\u57fa\u672c\u4e0a\u662f\u4f7f\u7528\u8ba1\u7b97\u673a\u7a0b\u5e8f\u91c7\u96c6\u6570\u636e\uff0c\u5e76\u8f6c\u5316\u8fd9\u4e9b\u6570\u636e\uff0c\u751f\u6210\u6709\u4ef7\u503c\u7684\u4fe1\u606f\u3002\u300c\u8f6c\u5316\u300d\u662f\u7528\u5f97\u975e\u5e38\u6cdb\u7684\u8bcd\u8bed\uff0c\u5b83\u4e0d\u80fd\u5f88\u516c\u6b63\u5730\u6307\u4ee3\u5b83\u6d89\u53ca\u7684\u6240\u6709\u90a3\u4e9b\u4e8b\u7269\uff0c\u4f46\u662f\u5b83\u6709\u52a9\u4e8e\u6211\u4eec\u7406\u89e3\u3002\u6b64\u5904\u7684\u5173\u952e\u662f\uff0c\u6240\u6709\u673a\u5668\u5b66\u4e60\u90fd\u662f\u4ece\u67d0\u7c7b\u8f93\u5165\u6570\u636e\u5f00\u59cb\u7684\u3002\uff08\u6ce8\uff1a\u6709\u8bb8\u591a\u8bb2\u89e3\u673a\u5668\u5b66\u4e60\u57fa\u7840\u77e5\u8bc6\u7684\u6559\u5b66\u8bb2\u5ea7\u548c\u8bfe\u7a0b\u53ef\u514d\u8d39\u83b7\u5f97\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u8fd9\u91cc\u4e0d\u505a\u6df1\u5165\u4ecb\u7ecd\u3002\u5982\u679c\u4f60\u6709\u5174\u8da3\u4e86\u89e3\u66f4\u591a\uff0c\u53ef\u53bb Coursera \u4e0a\u53c2\u52a0\u5434\u6069\u8fbe\u7684\u514d\u8d39\u8bfe\u7a0b\u3002\uff09<\/p>\n<p>\u6211\u4eec\u7684\u57fa\u672c\u8bba\u70b9\u662f\u6211\u4eec\u5fc5\u987b\u53d1\u73b0\u7528\u4e8e\u8bad\u7ec3\u673a\u5668\u5b66\u4e60\u6a21\u578b\u7684\u6570\u636e\u3002\u5c31\u8fd9\u70b9\u800c\u8a00\uff0c\u6211\u4eec\u5e76\u4e0d\u5341\u5206\u6e05\u695a\u4ec0\u4e48\u662f\u6709\u7528\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u91c7\u7528\u4e00\u79cd\u751f\u6d3b\u5316\u7684\u65b9\u6cd5\uff0c\u5e76\u6293\u4f4f\u6211\u4eec\u80fd\u60f3\u5230\u7684\u5c3d\u53ef\u80fd\u591a\u7684\u7279\u5f81\u3002 GetStat \u548c Majestic 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\u662f\u91cd\u8981\u7684\u3002<\/p>\n<\/p>\n<p>\u6211\u4eec\u7684\u76ee\u6807\u662f\u6700\u7ec8\u53d6\u5f97\u8db3\u591f\u6570\u636e\u6210\u529f\u5730\u8bad\u7ec3\u4e00\u4e2a\u6a21\u578b\uff0c\u800c\u4e14\u8fd9\u610f\u5473\u7740\u6211\u4eec\u9700\u8981\u5f88\u591a\u6570\u636e\u3002\u5bf9\u4e8e\u7b2c\u4e00\u4e2a\u6a21\u578b\uff0c\u6211\u4eec\u6709\u5927\u7ea6 20 \u4e07\u89c2\u6d4b\u503c\uff08\u884c\uff09\u548c 54 \u4e2a\u5c5e\u6027\uff08\u5217\uff09\u3002<\/p>\n<p><strong>\u80cc\u666f\u77e5\u8bc6<\/strong><\/p>\n<p>\u5c31\u50cf\u6211\u4e4b\u524d\u8bf4\u7684\uff0c\u6211\u4e0d\u4f1a\u8bb2\u5f88\u591a\u5173\u4e8e\u673a\u5668\u5b66\u4e60\u7684\u7ec6\u8282\uff0c\u4f46\u91cd\u8981\u7684\u662f\u638c\u63e1\u4e0b\u9762\u8fd9\u51e0\u70b9\u3002\u603b\u7684\u6765\u8bf4\uff0c\u73b0\u5728\u7684\u5927\u90e8\u5206\u673a\u5668\u5b66\u4e60\u5de5\u4f5c\u90fd\u662f\u5728\u5904\u7406\u56de\u5f52\u3001\u5206\u7c7b\u548c\u805a\u7c7b\u7b97\u6cd5\u3002\u6211\u5c06\u5728\u8fd9\u91cc\u5b9a\u4e49\u524d\u9762\u4e24\u4e2a\uff0c\u56e0\u4e3a\u5b83\u4eec\u4e0e\u6211\u4eec\u7684\u8fd9\u4e2a\u9879\u76ee\u6709\u5173\u3002<\/p>\n<\/p>\n<p>\u56de\u5f52\u7b97\u6cd5\u901a\u5e38\u7528\u4e8e\u9884\u6d4b\u4e00\u4e2a\u6570\u5b57\u3002\u5982\u679c\u4f60\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u57fa\u4e8e\u80a1\u7968\u7279\u5f81\u9884\u6d4b\u80a1\u7968\u8d70\u52bf\u7684\u7b97\u6cd5\uff0c\u4f60\u5c31\u5f97\u9009\u62e9\u8fd9\u4e2a\u6a21\u578b\u3002\u5b83\u4eec\u88ab\u79f0\u4f5c\u8fde\u7eed\u53d8\u91cf\u3002<\/p>\n<p>\u5206\u7c7b\u7b97\u6cd5\u7528\u4e8e\u9884\u6d4b\u8bf8\u591a\u53ef\u80fd\u7b54\u6848\u4e2d\u7684\u4e00\u4e2a\u7c7b\u522b\u7684\u6210\u5458\u3002\u8fd9\u53ef\u4ee5\u662f\u7b80\u5355\u7684\u300c\u662f\u6216\u5426\u300d\u5206\u7c7b\uff0c\u6216\u8005\u300c\u7ea2\u3001\u7eff\u6216\u84dd\u300d\u7684\u5206\u7c7b\u3002\u5982\u679c\u4f60\u9700\u8981\u57fa\u4e8e\u7279\u5f81\u9884\u6d4b\u4e00\u4e2a\u4e0d\u8ba4\u8bc6\u7684\u4eba\u662f\u7537\u8fd8\u662f\u5973\uff0c\u4f60\u5c31\u5f97\u9009\u62e9\u9009\u62e9\u8fd9\u4e2a\u6a21\u578b\u3002\u5b83\u4eec\u88ab\u79f0\u4f5c\u79bb\u6563\u53d8\u91cf\u3002<\/p>\n<p><strong>\u641e\u5b9a\u8c37\u6b4c\u6392\u540d<\/strong><\/p>\n<p>\u65e2\u7136\u6211\u4eec\u6709\u4e86\u6570\u636e\uff0c\u6211\u4eec\u5c1d\u8bd5\u4e86\u51e0\u79cd\u65b9\u5f0f\u9884\u6d4b\u6bcf\u4e2a\u7f51\u9875\u7684\u8c37\u6b4c\u6392\u540d\u3002\u8d77\u521d\uff0c\u6211\u4eec\u4f7f\u7528\u56de\u5f52\u7b97\u6cd5\uff08regression algorithm\uff09\u3002\u5373\uff0c\u6211\u4eec\u8ffd\u6c42\u9884\u6d4b\u5728\u641c\u7d22\u7ed9\u5b9a\u7684\u8bcd\u8bed\u65f6\u7f51\u7ad9\u7684\u7cbe\u786e\u6392\u540d\uff08\u6bd4\u5982\uff0c\u641c\u7d22\u8bcd\u8bed Y\uff0c\u9884\u6d4b\u67d0\u7f51\u7ad9\u7684\u6392\u540d\u4e3a X\uff09\uff0c\u4f46\u662f\uff0c\u5728\u51e0\u5468\u4e4b\u540e\uff0c\u6211\u4eec\u610f\u8bc6\u5230\u8fd9\u9879\u4efb\u52a1\u592a\u56f0\u96be\u4e86\u3002\u9996\u5148\uff0c\u6392\u540d\u6307\u7684\u662f\u4e00\u4e2a\u7f51\u7ad9\u4e0e\u5176\u5b83\u7f51\u7ad9\u7684\u76f8\u5bf9\u5173\u7cfb\uff0c\u800c\u4e0d\u662f\u6307\u7f51\u7ad9\u7684\u5185\u5728\u5c5e\u6027\u3002\u65e2\u7136\u6211\u4eec\u4e0d\u53ef\u80fd\u62ff\u5728\u7ed9\u5b9a\u641c\u7d22\u8bcd\u6761\u4ef6\u4e0b\u6240\u6709\u7684\u7f51\u7ad9\u6392\u540d\u53bb\u8bad\u7ec3\u6211\u4eec\u7684\u7b97\u6cd5\uff0c\u6211\u4eec\u91cd\u65b0\u8868\u8ff0\u4e86\u95ee\u9898\u3002<\/p>\n<p>\u6211\u4eec\u8ba4\u8bc6\u5230\uff0c\u5c31\u8c37\u6b4c\u6392\u540d\u800c\u8a00\uff0c\u6700\u7d27\u8981\u7684\u662f\u5728\u7ed9\u5b9a\u641c\u7d22\u8bcd\u65f6\u4e00\u4e2a\u7ed9\u5b9a\u7684\u7f51\u7ad9\u662f\u5426\u6700\u7ec8\u80fd\u6392\u5728\u7b2c\u4e00\u9875\u3002\u56e0\u800c\uff0c\u6211\u4eec\u91cd\u65b0\u5256\u6790\u4e86\u95ee\u9898\uff1a\u5982\u679c\u6211\u4eec\u9884\u6d4b\u5728\u641c\u7d22\u67d0\u4e2a\u8bcd\u65f6\u4e00\u4e2a\u7f51\u7ad9\u7684\u8c37\u6b4c\u6392\u540d\u662f\u5426\u80fd\u8fdb\u524d\u5341\uff0c\u53c8\u4f1a\u600e\u6837\u5462\uff1f<\/p>\n<p>\u4ece\u90a3\u70b9\u6765\u770b\uff0c\u95ee\u9898\u8f6c\u53d8\u6210\u4e8c\u8fdb\u5236\uff08\u662f\u6216\u5426\uff09\u5206\u7c7b\u95ee\u9898\uff0c\u6211\u4eec\u53ea\u6709\u4e24\u4e2a\u5206\u7c7b\uff1a1\uff09\u7f51\u7ad9\u662f\u6392\u5728\u524d\u5341\u7684\uff0c2\uff09\u7f51\u7ad9\u4e0d\u662f\u6392\u5728\u524d\u5341\u7684\u3002\u6b64\u5916\uff0c\u6211\u4eec\u51b3\u5b9a\u9884\u6d4b\u4e00\u4e2a\u7ed9\u5b9a\u7f51\u7ad9\u5c5e\u4e8e\u8fd9\u4e24\u7c7b\u7684\u6982\u7387\uff0c\u800c\u4e0d\u662f\u505a\u51fa\u662f\u6216\u5426\u7684\u9884\u6d4b\u3002<\/p>\n<p>\u968f\u540e\uff0c\u4e3a\u4e86\u8feb\u4f7f\u6211\u4eec\u81ea\u5df1\u505a\u51fa\u66f4\u660e\u786e\u7684\u51b3\u7b56\uff0c\u6211\u4eec\u8bbe\u5b9a\u7528\u6765\u8861\u91cf\u4e00\u4e2a\u7f51\u7ad9\u662f\u5426\u80fd\u6392\u8fdb\u524d\u5341\u7684\u9608\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u4eec\u9884\u6d4b\u9608\u503c\u662f 0.85 \uff0c\u7136\u540e\u5982\u679c\u6211\u4eec\u9884\u6d4b\u7f51\u7ad9\u6392\u8fdb\u524d\u5341\u7684\u6982\u7387\u9ad8\u4e8e 0.85 \uff0c\u6211\u4eec\u5c31\u8ba4\u4e3a\u8fd9\u4e2a\u7f51\u7ad9\u5c06\u8fdb\u5165\u524d\u5341\u3002<\/p>\n<p>\u4e3a\u4e86\u8861\u91cf\u8fd9\u4e2a\u7b97\u6cd5\u7684\u6027\u80fd\uff0c\u6211\u4eec\u51b3\u5b9a\u4f7f\u7528\u6df7\u5408\u77e9\u9635\u3002<\/p>\n<p>\u4e0b\u9762\u8fd9\u4e2a\u56fe\u8868\u6982\u8ff0\u4e86\u6574\u4e2a\u8fc7\u7a0b\uff1a<\/p>\n<\/p>\n<p><strong><\/strong><strong>\u7406\u6e05\u6570\u636e<\/strong><\/p>\n<p>\u6211\u4eec\u4f7f\u7528\u4e86\u4e00\u4e2a\u6709 20 \u4e07\u6761\u8bb0\u5f55\u7684\u6570\u636e\uff0c\u5305\u62ec\u5927\u7ea6 2000 \u4e2a\u4e0d\u540c\u7684\u5173\u952e\u8bcd\/\u641c\u7d22\u8bcd\u3002\u603b\u4f53\u4e0a\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u8fd9\u4e9b\u5173\u952e\u8bcd\u4f9d\u636e\u5c5e\u6027\u5206\u4e3a\u4ee5\u4e0b\u51e0\u7c7b\uff1a<\/p>\n<p>\u6570\u5b57\u5c5e\u6027<\/p>\n<p>\u7c7b\u522b\u53d8\u91cf<\/p>\n<p>\u6587\u5b57\u5c5e\u6027<\/p>\n<p>\u6570\u5b57\u5c5e\u6027\u6307\u7684\u662f\u8be5\u5173\u952e\u8bcd\u53ef\u4ee5\u8868\u793a\u65e0\u9650\u6216\u6709\u9650\u533a\u95f4\u5185\u7684\u4efb\u610f\u6570\u5b57\u3002<\/p>\n<p>\u7c7b\u522b\u53d8\u91cf\u662f\u6307\u4e00\u4e2a\u53ef\u4ee5\u8868\u793a\u6709\u9650\u6570\u91cf\u7684\u503c\uff0c\u6bcf\u4e2a\u503c\u4ee3\u8868\u4e00\u4e2a\u4e0d\u540c\u7684\u7fa4\u4f53\u6216\u7c7b\u522b\u3002<\/p>\n<p>\u6587\u5b57\u5c5e\u6027\u663e\u7136\u6307\u6587\u672c\uff0c\u5305\u62ec\u641c\u7d22\u5173\u952e\u8bcd\uff0c\u7f51\u7ad9\u5185\u5bb9\u3001\u6807\u9898\u3001\u5143\u6570\u636e\u63cf\u8ff0\uff08meta deion\uff09\uff0c\u951a\u6587\u672c\u3001\u6807\u9898(H1 H2,H3)\u7b49\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.fagao.me\/images\/uploads\/2019_016.jpg\" alt=\"\"><\/p>\n<p><strong>\u7279\u5f81\u5de5\u7a0b<\/strong><\/p>\n<p>\u6211\u4eec\u8bbe\u8ba1\u4e86\u4e0e\u6392\u540d\u6709\u5173\u7684\u989d\u5916\u5c5e\u6027\u3002<\/p>\n<p>\u5927\u591a\u6570\u5c5e\u6027\u662f\u5e03\u5c14\u903b\u8f91\u4f53\u7cfb\u7684\uff08\u771f\u6216\u5047\uff09\uff0c\u4f46\u662f\u4e00\u4e9b\u662f\u6570\u503c\u7684\u3002\u4f8b\u5982\uff0c\u5e03\u5c14\u903b\u8f91\u5c5e\u6027\u662f\u7f51\u7ad9\u6587\u672c\u4e2d\u7684\u7cbe\u786e\u641c\u7d22\u8bcd\u662f\u4ec0\u4e48\uff0c\u800c\u6570\u503c\u5c5e\u6027\u662f\u7f51\u7ad9\u6587\u672c\u4e2d\u6709\u591a\u5c11\u88ab\u6807\u8bb0\u7684\u641c\u7d22\u8bcd\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u6211\u4eec\u8bbe\u8ba1\u7684\u4e00\u4e9b\u5c5e\u6027\u3002<\/p>\n<\/p>\n<p><strong><\/strong><strong>\u8fd0\u884c TF-IDF\u7b97\u6cd5<\/strong><\/p>\n<p>\u4e3a\u4e86\u9884\u5904\u7406\u6587\u672c\u7279\u5f81\uff0c\u6211\u4eec\u4f7f\u7528\u4e86 TF-IDF \u7b97\u6cd5\uff08\u68c0\u7d22\u8bcd\u9891\u7387\uff0c\u53cd\u8f6c\u6587\u6863\u9891\u7387\uff09\u3002\u6b64\u7b97\u6cd5\u5c06\u6bcf\u4e2a\u5b9e\u4f8b\u89c6\u4e3a\u6587\u4ef6\uff0c\u5e76\u5c06\u6240\u6709\u5b9e\u4f8b\u96c6\u5408\u89c6\u4e3a\u4e00\u4e2a\u8bed\u6599\u5e93\u3002\u7136\u540e\uff0c\u5b83\u4e3a\u6bcf\u4e2a\u8bcd\u8d4b\u4e88\u5206\u6570\uff0c\u8bcd\u6c47\u5728\u6587\u4ef6\u4e2d\u51fa\u73b0\u7684\u9891\u7387\u8d8a\u9ad8\uff0c\u5728\u8bed\u6599\u5e93\u4e2d\u51fa\u73b0\u7684\u9891\u7387\u8d8a\u4f4e\uff0c\u90a3\u4e48\u5176\u5206\u6570\u5c31\u8d8a\u9ad8\u3002<\/p>\n<p>\u6211\u4eec\u8bd5\u8fc7\u4e24\u79cd TF-IDF \u65b9\u5f0f\uff0c\u53ea\u5f97\u5230\u4f9d\u8d56\u4e8e\u6a21\u578b\u7684\u7565\u5fae\u4e0d\u540c\u7684\u7ed3\u679c\u3002\u7b2c\u4e00\u79cd\u65b9\u5f0f\u7531\u9996\u5148\u8fde\u63a5\u6240\u6709\u7684\u6587\u672c\u7279\u5f81\u6784\u6210\uff0c\u7136\u540e\u5e94\u7528 TF-IDF \u7b97\u6cd5\uff08\u4e5f\u5c31\u662f\u8bf4\uff0c\u5355\u4e2a\u5b9e\u4f8b\u7684\u6240\u6709\u6587\u672c\u5217\u8fde\u63a5\u800c\u6210\u6587\u4ef6\uff0c\u4e00\u7cfb\u5217\u8fd9\u6837\u7684\u5b9e\u4f8b\u6784\u6210\u8bed\u6599\u5e93\uff09\u3002\u7b2c\u4e8c\u79cd\u65b9\u5f0f\u662f\u6307\u5bf9\u6bcf\u4e2a\u7279\u5f81\u5206\u5f00\u5e94\u7528 TF-IDF \u7b97\u6cd5\uff08\u4e5f\u5c31\u662f\u8bf4\uff0c\u6bcf\u4e2a\u5355\u72ec\u7684\u6587\u672c\u5217\u662f\u4e00\u4e2a\u8bed\u6599\u5e93\uff09\uff0c\u7136\u540e\u8fde\u63a5\u7531\u6b64\u5f97\u51fa\u7684\u6570\u7ec4\u3002<\/p>\n<p>\u7528 TF-IDF \u7b97\u6cd5\u5f97\u51fa\u7684\u6570\u7ec4\u662f\u975e\u5e38\u7a00\u758f\u7684\uff08\u5bf9\u4e8e\u7ed9\u5b9a\u7684\u5b9e\u4f8b\u5927\u591a\u6570\u884c\u5217\u7684\u6570\u636e\u662f\u96f6\uff09\uff0c\u6240\u4ee5\u6211\u4eec\u5e94\u7528\u964d\u7ef4\u624b\u6bb5\uff08\u5947\u5f02\u503c\u5206\u89e3\uff09\u51cf\u5c11\u5c5e\u6027\/\u884c\u5217\u7684\u6570\u91cf\u3002<\/p>\n<p>\u6700\u540e\u4e00\u6b65\u662f\u8fde\u63a5\u6240\u6709\u4ece\u7279\u5f81\u7c7b\u522b\u4e2d\u5f97\u51fa\u7684\u884c\u5217\u5f62\u6210\u4e00\u4e2a\u6570\u7ec4\u3002\u8fd9\u662f\u6211\u4eec\u505a\u5b8c\u4ee5\u4e0a\u6240\u6709\u6b65\u9aa4\uff08\u7406\u6e05\u7279\u5f81\uff0c\u5c06\u5206\u7c7b\u7279\u5f81\u8f6c\u53d8\u4e3a\u6807\u7b7e\u5e76\u5728\u6807\u7b7e\u4e0a\u8fd0\u884c\u72ec\u70ed\u7801\uff0c\u5e94\u7528 TF-IDF \u7b97\u6cd5\u4e8e\u6587\u672c\u7279\u5f81\u5e76\u5c06\u6240\u6709\u7279\u5f81\u6309\u6bd4\u4f8b\u6392\u5217\u5230\u5e73\u5747\u503c\u4e24\u7aef\uff09\u540e\u518d\u53bb\u505a\u7684\u3002<\/p>\n<p><strong>\u6a21\u578b\u548c\u96c6\u5408<\/strong><\/p>\n<p>\u5728\u83b7\u5f97\u548c\u8fde\u63a5\u6240\u6709\u5c5e\u6027\u540e\uff0c\u6211\u4eec\u5bf9\u5b83\u4eec\u8fd0\u884c\u4e86\u8bb8\u591a\u4e0d\u540c\u7684\u7b97\u6cd5\u3002\u7ed3\u679c\u663e\u793a\u6700\u6709\u524d\u9014\u7684\u7b97\u6cd5\u662f\u6e10\u8fdb\u589e\u957f\u5206\u7c7b\u5668\uff08 gradient boosting classifier\uff09\uff0c\u810a\u5206\u7c7b\u5668\uff08 ridge classifier\uff09\u548c\u4e00\u4e2a\u4e24\u5c42\u7684\u795e\u7ecf\u7f51\u7edc\u3002<\/p>\n<p>\u6700\u7ec8\uff0c\u6211\u4eec\u4f7f\u7528\u7b80\u5355\u7684\u5e73\u5747\u503c\u5c06\u6a21\u578b\u7ed3\u679c\u96c6\u4e2d\u5728\u4e00\u8d77\u5904\u7406\uff0c\u56e0\u6b64\u6211\u4eec\u5f97\u5230\u4e86\u4e00\u4e9b\u989d\u5916\u6536\u83b7\uff0c\u56e0\u4e3a\u4e0d\u540c\u6a21\u578b\u503e\u5411\u4e8e\u6709\u4e0d\u540c\u7684\u504f\u5dee\u3002<\/p>\n<p><strong>\u4f18\u5316\u9608\u503c<\/strong><\/p>\n<p>\u6700\u540e\u4e00\u6b65\u662f\u8bbe\u5b9a\u9608\u503c\u5c06\u6982\u7387\u4f30\u7b97\u8f6c\u53d8\u4e3a\u4e8c\u8fdb\u5236\u9884\u6d4b\uff08\u300c\u662f\u7684\uff0c\u6211\u4eec\u9884\u6d4b\u6b64\u7f51\u7ad9\u4f4d\u4e8e\u8c37\u6b4c\u6392\u540d\u524d\u5341\u300d\u6216\u300c\u4e0d\u662f\u7684\uff0c\u6211\u4eec\u9884\u6d4b\u6b64\u7f51\u7ad9\u4e0d\u4f1a\u8fdb\u8c37\u6b4c\u6392\u540d\u524d\u5341\u3002\u300d\uff09\u4e3a\u4e86\u505a\u5230\u8fd9\u70b9\uff0c\u6211\u4eec\u4f18\u5316\u4e86\u4ea4\u53c9\u786e\u8ba4\u96c6\uff08cross-validation set \uff09\uff0c\u7136\u540e\u4f7f\u7528\u4e86\u5728\u6d4b\u8bd5\u96c6\u4e0a\u5f97\u5230\u7684\u9608\u503c\u3002<\/p>\n<p><strong>\u7ed3\u679c<\/strong><\/p>\n<p>\u6211\u4eec\u8ba4\u4e3a\u5bf9\u4e8e\u6d4b\u91cf\u6a21\u578b\u6709\u6548\u6027\u7684\u6700\u6709\u4ee3\u8868\u6027\u7684\u5ea6\u91cf\u662f\u6df7\u6dc6\u77e9\u9635\u3002\u6df7\u6dc6\u77e9\u9635\u662f\u4e00\u79cd\u53ef\u89c6\u5316\u7684\u8868\u683c\uff0c\u4e3b\u8981\u7528\u4e8e\u6bd4\u8f83\u5206\u7c7b\u7ed3\u679c\u548c\u5b9e\u9645\u6d4b\u5f97\u503c\u3002\u6df7\u6dc6\u77e9\u9635\u7684\u6bcf\u4e00\u5217\u4ee3\u8868\u4e86\u9884\u6d4b\u7c7b\u522b\uff0c\u6bcf\u4e00\u5217\u7684\u603b\u6570\u8868\u793a\u9884\u6d4b\u4e3a\u8be5\u7c7b\u522b\u7684\u6570\u636e\u7684\u6570\u76ee\uff1b\u6bcf\u4e00\u884c\u4ee3\u8868\u4e86\u6570\u636e\u7684\u771f\u5b9e\u5f52\u5c5e\u7c7b\u522b\uff0c\u6bcf\u4e00\u884c\u7684\u6570\u636e\u603b\u6570\u8868\u793a\u8be5\u7c7b\u522b\u7684\u6570\u636e\u5b9e\u4f8b\u7684\u6570\u76ee\u3002<\/p>\n<p>\u6211\u786e\u4fe1\u4f60\u542c\u8bf4\u8fc7\u300c\u4e00\u4e2a\u574f\u6389\u7684\u949f\u6bcf\u5929\u6709\u4e24\u6b21\u80fd\u6b63\u786e\u6307\u793a\u65f6\u95f4\u300d\u8fd9\u53e5\u683c\u8a00\u3002\u8f93\u5165\u6bcf\u4e2a\u5173\u952e\u8bcd\u5f97\u5230 100 \u79cd\u7ed3\u679c\uff0c\u968f\u610f\u778e\u731c\u603b\u80fd\u4ee5 90% \u7684\u6b63\u786e\u7387\u9884\u6d4b\u300c\u4e0d\u80fd\u6392\u5728\u524d\u5341\u300d\u7684\u60c5\u51b5\u3002\u6df7\u6dc6\u77e9\u9635\u786e\u4fdd\u80af\u5b9a\u7684\u548c\u5426\u5b9a\u7684\u7b54\u6848\u90fd\u662f\u6b63\u786e\u7684\u3002\u5728\u6211\u4eec\u6700\u597d\u7684\u6a21\u578b\u4e2d\uff0c\u6211\u4eec\u83b7\u5f97\u5927\u7ea6 41% \u7684\u6b63\u786e\u80af\u5b9a\u548c 41% \u7684\u6b63\u786e\u5426\u5b9a\u3002<\/p>\n<\/p>\n<p>\u5c06\u6a21\u578b\u6548\u679c\u53ef\u89c6\u5316\u7684\u53e6\u4e00\u9014\u5f84\u662f\u4f7f\u7528\u7279\u5f81\u66f2\u7ebf\uff08ROC curve\uff09\u3002\u7279\u5f81\u66f2\u7ebf\u662f\u300c\u7528\u56fe\u793a\u6cd5\u8bf4\u660e\u4e8c\u8fdb\u5236\u5206\u7c7b\u5668\u7cfb\u7edf\u968f\u7740\u9274\u522b\u529b\u9608\uff08discrimination threshold\uff09\u800c\u53d8\u5316\u7684\u6548\u80fd\u3002\u300d\u5728\u8fd9\u6574\u4e2a\u7cfb\u7edf\u4e2d\u4f7f\u7528\u7684\u975e\u7ebf\u6027\u6a21\u578b\u662f XGBoost 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