{"id":123519,"date":"2026-11-07T15:49:04","date_gmt":"2026-11-07T07:49:04","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/123519.html"},"modified":"2026-11-07T15:49:04","modified_gmt":"2026-11-07T07:49:04","slug":"rag_%e5%88%87%e7%89%8703","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/123519.html","title":{"rendered":"RAG_\u5207\u724703"},"content":{"rendered":"<p>\u4e0a\u4e2a\u6587\u7ae0\u505a\u4e86\u5bf9\u6807\u9898\/\u6b63\u6587\u8bc6\u522b\u7684\u9884\u5904\u7406&#xff0c;\u63a5\u4e0b\u6765\u5c31\u662f\u8bad\u7ec3\u6a21\u578b\u8bc6\u522b\u6807\u9898\/\u6b63\u6587\u4e86\u3002<\/p>\n<p>\u6d41\u7a0b\u63cf\u8ff0\u90e8\u5206<\/p>\n<p>\u8fd9\u91cc\u6211\u7528\u7684\u662f\u968f\u673a\u68ee\u6797\u505a\u51b3\u7b56&#xff0c;\u5148\u770b\u4e0b\u5177\u4f53\u6d41\u7a0b<\/p>\n<p>\u51c6\u5907\u8bad\u7ec3\u96c6<br \/>\n\u63d0\u53d6\u8bad\u7ec3\u96c6\u4e2d\u7684\u6570\u636e\u7279\u5f81<br \/>\n\u8bad\u7ec3\u6a21\u578b<br 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style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261107074902-6aeed7ee40808.jpg\" \/><\/p>\n<p>\u770b\u4e0d\u6e05\u7684\u8bdd\u6709\u4e0b\u9762\u6587\u5b57:<br \/>\n\u53e5\u5b50 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\/><\/p>\n<p>\u770b\u4e0d\u6e05\u7684\u8bdd\u6709\u4e0b\u9762\u6587\u5b57:<br \/>\n\u53e5\u5b50 A&#xff1a;\u3010\u5236\u4f5c\u5de5\u827a\u3011\u90ce\u5ddd\u58a8\u7389\u77f3\u781a\u7684\u5236\u4f5c\u5de5\u5e8f\u7e41\u590d\u7cbe\u7ec6&#xff0c;\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u73af\u8282&#xff1a;\u4e00\u3001\u9009\u77f3&#xff1a;\u4e8e\u90ce\u5ddd\u6cb3\u5e8a\u53ca\u5c71\u9e93\u91c7\u9009\u58a8\u7389\u539f\u77f3&#xff0c;\u4ee5\u8272\u7eaf\u65e0\u7455\u3001\u8d28\u5730\u5747\u5300\u8005\u4e3a\u4e0a\u3002\u4e8c\u3001\u5236\u576f&#xff1a;\u5c06\u539f\u77f3\u4f9d\u7eb9\u7406\u89e3\u7406&#xff0c;\u5207\u524a\u6210\u781a\u576f&#xff0c;\u7c97\u78e8\u5b9a\u5f62\u3002\u4e09\u3001\u8bbe\u8ba1&#xff1a;\u89c4\u5212\u781a\u6c60\u3001\u781a\u8fb9\u53ca\u7eb9\u9970\u5e03\u5c40&#xff0c;\u56e0\u77f3\u6784\u56fe\u3001\u5de7\u501f\u5929\u7136\u3002\u56db\u3001\u96d5\u523b&#xff1a;\u4ee5\u523b\u5200\u7cbe\u96d5\u7eb9\u9970&#xff0c;\u6280\u6cd5\u6709\u6df1\u96d5\u3001\u6d45\u96d5\u3001\u7ebf\u523b\u7b49&#xff0c;\u5200\u6cd5\u6c89\u7a33\u6d41\u7545\u3002<br \/>\n\u53e5\u5b50 B&#xff1a;\u5b83\u53ef\u4ee5\u7528\u6765\u505a\u7aef\u5348\u8282\u7684\u7cbd\u5b50&#xff0c;\u5b59\u609f\u7a7a\u5403\u4e86\u8fd9\u4e2a\u7cbd\u5b50\u4e4b\u540e\u5c31\u80fd\u548c\u6797\u9edb\u7389\u4e00\u8f83\u9ad8\u4e0b\u4e86&#xff0c;\u6b66\u677e\u5403\u4e86\u8fd9\u4e2a\u7cbd\u5b50\u4e5f\u53ef\u4ee5\u53bb\u5411\u8bf8\u845b\u4eae\u4e03\u661f\u7eed\u547d\u4e86\u3002<br \/>\n\u4f59\u5f26\u76f8\u4f3c\u5ea6&#xff1a;0.3503<\/p>\n<p>\u80af\u5b9a\u4f1a\u6709\u8fd9\u4e48\u4e2a\u601d\u60f3&#xff0c;\u6362embedding\u6a21\u578b&#xff0c;\u770b\u54ea\u4e2a\u80fd\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5c31\u7528\u54ea\u4e2a&#xff0c;\u4f46\u662f&#xff0c;embedding\u662f\u6211\u4eec\u770b\u4e0d\u5230\u5185\u90e8\u5b9e\u73b0\u7684&#xff0c;\u5b83\u53ef\u80fd\u5bf9\u5177\u6709\u90e8\u5206\u76f8\u540c\u5173\u952e\u8bcd\u7684\u4e0d\u540c\u53e5\u5b50\u533a\u5206\u6548\u679c\u4e0d\u592a\u597d\u3002<br \/>\nembedding\u4e5f\u53ef\u80fd\u53d7\u5230\u5173\u952e\u8bcd\u8f83\u5927\u7684\u5f71\u54cd&#xff0c;\u6211\u5c31\u76f4\u63a5\u7528\u5206\u8bcd\u548cTF-IDF\u4ee3\u8868\u4e00\u5b9a\u7a0b\u5ea6\u7684\u8bed\u4e49\u4e86\u3002\u540c\u65f6\u51cf\u5c11\u5355\u5b57&#xff08;\u4f8b\u5982\u201c\u7684\u201d&#xff09;\u5bf9\u8bed\u4e49\u7684\u5f71\u54cd\u3002<\/p>\n<p>\u603b\u4f53\u6765\u8bf4&#xff0c;\u9009\u7528TF-IDF\u7684\u539f\u56e0<\/p>\n<li>1. embedding\u53ef\u80fd\u53d7\u5230\u5173\u952e\u8bcd\u7684\u5f71\u54cd\u8f83\u5927&#xff0c;\u4e5f\u53ef\u80fd\u53d7\u5230\u5176\u4ed6\u4e0d\u5fc5\u8981\u5b57\u8bcd\u7684\u8f83\u5927\u7684\u5f71\u54cd&#xff0c;\u6240\u4ee5\u7528\u5206\u8bcd\u7ed3\u5408TF-IDF&#xff0c;\u4ece\u8bcd\u4ee3\u8868\u8bed\u4e49\u7684\u89d2\u5ea6\u6784\u5efa\u8bcd\u9891\u77e9\u9635<\/li>\n<li>2. \u81ea\u5df1\u6784\u5efa\u8bcd\u9891\u77e9\u9635\u53ef\u770b&#xff0c;\u7528embedding\u76f8\u5f53\u4e8e\u662f\u4e00\u4e2a\u9ed1\u76d2\u64cd\u4f5c&#xff0c;\u5b83\u7684\u6bcf\u4e00\u5217\u662f\u5565\u610f\u601d\u6211\u4eec\u4e0d\u77e5\u9053&#xff0c;\u800c\u6211\u4eec\u53ef\u4ee5\u770b\u8bcd\u9891\u77e9\u9635\u6765\u66f4\u6e05\u6670\u7684\u77e5\u9053\u6bcf\u4e00\u5217\u6570\u5b57\u7279\u5f81\u662f\u5565\u610f\u601d<\/li>\n<li>3. \u964d\u4f4e\u4e0d\u5fc5\u8981\u7684\u566a\u58f0\u5e72\u6270<\/li>\n<p>\u4f46\u662f\u5355\u7eaf\u6839\u636e\u5206\u8bcd\u63d0\u53d6\u7279\u5f81\u8fd8\u6709\u7f3a\u9677&#xff0c;\u4f8b\u5982\u63cf\u8ff0\u4e00\u4e2a\u4eba\u7684\u7ecf\u5386\u7684\u65f6\u5019&#xff0c;\u4e0b\u9762\u8fd9\u79cd\u683c\u5f0f&#xff1a;<br \/>\n\u804c\u4f4d\u540d\u5b57 | 2026-01-01 \u81f3 2026-02-01<br \/>\n\u8fd9\u79cd\u683c\u5f0f\u7684\u8bdd\u63d0\u53d6\u5230\u7684\u5c31\u53ea\u6709\u804c\u4f4d\u7684\u540d\u5b57&#xff0c;\u5982\u679c\u804c\u4f4d\u540d\u5b57\u8fd8\u6ca1\u51e0\u4e2a\u8bcd&#xff0c;\u90a3\u8fd9\u4e2a\u7279\u5f81\u63d0\u53d6\u7684\u6548\u679c\u5c31\u5f88\u5dee\u3002<br \/>\n\u6240\u4ee5\u8bad\u7ec3\u7684\u65f6\u5019\u8fd8\u8981\u6839\u636e\u672c\u8eab\u5185\u90e8\u77e5\u8bc6\u5e93\u7684\u7279\u5f81&#xff0c;\u589e\u52a0\u9002\u5f53\u7684\u8bad\u7ec3\u96c6\u6570\u636e&#xff0c;\u5c06\u8fd9\u79cd\u6b63\u6587\u7684\u7279\u5f81\u4e5f\u63d0\u53d6\u51fa\u6765\u3002<br \/>\n\u7531\u4e8e\u4ee3\u7801\u8f83\u591a&#xff0c;\u5c31\u4e0d\u4e00\u8fb9\u63cf\u8ff0\u6d41\u7a0b\u4e00\u8fb9\u8d34\u4ee3\u7801\u4e86&#xff0c;\u5148\u628a\u6574\u4f53\u6d41\u7a0b\u63cf\u8ff0\u6e05\u695a\u4e4b\u540e\u518d\u8d34\u4ee3\u7801\u3002<\/p>\n<p>\u8bad\u7ec3\u6a21\u578b<\/p>\n<p>\u4ece\u4e0a\u9762\u53ef\u4ee5\u770b\u51fa&#xff0c;\u8fd9\u662f\u4e00\u4e2a\u5206\u7c7b\u95ee\u9898&#xff0c;\u800c\u4e14\u662f\u4e00\u4e2a\u4e8c\u5206\u7c7b\u95ee\u9898&#xff0c;\u6240\u4ee5\u53ef\u4ee5\u91c7\u7528\u5206\u7c7b\u6a21\u578b\u8fdb\u884c\u51b3\u7b56\u3002\u6211\u8fd9\u91cc\u7528\u5230\u7684\u662f\u968f\u673a\u68ee\u6797&#xff0c;\u5f53\u7136\u53ef\u4ee5\u8dd1\u5176\u4ed6\u5206\u7c7b\u6a21\u578b\u8fdb\u884c\u6d4b\u8bd5&#xff0c;\u5bfb\u6c42\u6700\u597d\u7684\u6548\u679c\u3002<\/p>\n<p>\u4ee3\u7801\u5b9e\u73b0\u90e8\u5206&#xff08;\u53ea\u5217\u51fa\u5fc5\u8981\u4ee3\u7801&#xff09;<\/p>\n<p>\u5206\u8bcd\u63d0\u53d6<\/p>\n<p>def\u00a0_tokenize(text):<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u8fd4\u56de\u7684\u662f\u5b57\u7b26\u4e32&#xff0c;\u7528\u7a7a\u683c\u62fc\u63a5&#xff0c;TfidfVectorizer\u8981\u6c42\u8f93\u5165\u662f\u5b57\u7b26\u4e32&#xff0c;\u5b83\u5185\u90e8\u6309\u7a7a\u683c\u5207\u8bcd&#xff0c;<br \/>\n\u00a0\u00a0\u00a0\u00a0words\u00a0&#061;\u00a0jieba.lcut(text)<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u4fdd\u7559\u957f\u5ea6\u5927\u4e8e1\u7684\u8bcd&#xff0c;\u53bb\u6389\u6807\u70b9\u7b26\u53f7\u548c\u5355\u4e2a\u5b57\u8fd8\u6709\u6570\u5b57&#xff0c;\u6570\u5b57\u6839\u636e\u7ed3\u6784\u5316\u6765\u505a<br \/>\n\u00a0\u00a0\u00a0\u00a0words\u00a0&#061;\u00a0[w\u00a0for\u00a0w\u00a0in\u00a0words\u00a0if\u00a0len(w)\u00a0&gt;\u00a01\u00a0or\u00a0re.match(r&#039;[\\\\u4e00-\\\\u9fff]&#039;,\u00a0w)]\u00a0#\u00a0\u90a3\u4e2a\u6b63\u5219\u662fUnicode\u4e2d\u6587\u7684\u8303\u56f4<br \/>\n\u00a0\u00a0\u00a0\u00a0words\u00a0&#061;\u00a0[w\u00a0for\u00a0w\u00a0in\u00a0words\u00a0if\u00a0not\u00a0re.match(r&#039;\\\\d&#043;&#039;,\u00a0w)]\u00a0#\u00a0\u53bb\u6389\u5e74\u4efd\u7b49\u6570\u5b57&#xff0c;\u5e74\u4efd\u653e\u5230\u7ed3\u6784\u91cc<br \/>\n\u00a0\u00a0\u00a0\u00a0return\u00a0&#039;\u00a0&#039;.join(words)<\/p>\n<p>\u53ea\u63d0\u53d6\u8bcd\u8fd8\u4e0d\u591f&#xff0c;\u8fd8\u8981\u6839\u636e\u5185\u90e8\u77e5\u8bc6\u5e93\u7684\u7279\u5f81&#xff0c;\u63d0\u53d6\u5bf9\u5e94\u7684\u7279\u5f81&#xff0c;\u8fd9\u91cc\u6211\u6839\u636e\u6211\u7684\u77e5\u8bc6\u5e93\u91cc\u7684\u5185\u5bb9\u7279\u5f81\u63d0\u53d6\u516d\u4e2a<\/p>\n<p>def\u00a0_structural_features(text):<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u516d\u4e2a&#xff1a;\u5b57\u7b26\u6570&#xff0c;\u5206\u8bcd\u540e\u7684\u8bcd\u7684\u6570\u91cf&#xff0c;\u6709\u6ca1\u6709\u5192\u53f7&#xff0c;\u6709\u6ca1\u6709\u7ad6\u7ebf&#xff0c;\u6709\u6ca1\u6709\u6570\u5b57&#xff08;\u5e74\u4efd\u7ed3\u6784&#xff0c;\u4e0d\u80fd\u4e22\u5f03&#xff09;&#xff0c;\u00a0\u662f\u5426\u6709\u62ec\u53f7&#xff08;\u7b2c\u4e09\u7248&#xff0c;\u8fd9\u4e2a\u4e5f\u4e0d\u80fd\u4e22&#xff09;<br \/>\n\u00a0\u00a0\u00a0\u00a0char_len\u00a0&#061;\u00a0len(text)<br \/>\n\u00a0\u00a0\u00a0\u00a0word_count\u00a0&#061;\u00a0len(jieba.lcut(text))<br \/>\n\u00a0\u00a0\u00a0\u00a0has_colon\u00a0&#061;\u00a01\u00a0if\u00a0(&#039;:&#039;\u00a0in\u00a0text\u00a0or\u00a0&#039;&#xff1a;&#039;\u00a0in\u00a0text)\u00a0else\u00a00<br \/>\n\u00a0\u00a0\u00a0\u00a0has_pipe\u00a0&#061;\u00a01\u00a0if\u00a0&#039;|&#039;\u00a0in\u00a0text\u00a0else\u00a00<br \/>\n\u00a0\u00a0\u00a0\u00a0has_year\u00a0&#061;\u00a01\u00a0if\u00a0re.search(r&#039;\\\\d{4}&#039;,\u00a0text)\u00a0else\u00a00<br \/>\n\u00a0\u00a0\u00a0\u00a0has_paren\u00a0&#061;\u00a01\u00a0if\u00a0(&#039;&#xff08;&#039;\u00a0in\u00a0text\u00a0or\u00a0&#039;(&#039;\u00a0in\u00a0text)\u00a0else\u00a00<br \/>\n\u00a0\u00a0\u00a0\u00a0return\u00a0[char_len,\u00a0word_count,\u00a0has_colon,\u00a0has_pipe,\u00a0has_year,\u00a0has_paren]<\/p>\n<p>\u540e\u9762\u8bad\u7ec3\u7684\u65f6\u5019&#xff0c;\u7528\u5230\u7684\u7279\u5f81\u77e9\u9635\u5c31\u662f\u8bcd\u9891\u77e9\u9635\u62fc\u63a5\u7ed3\u6784\u7279\u5f81\u77e9\u9635<\/p>\n<p>\u8bad\u7ec3\u6a21\u578b<\/p>\n<p>#\u00a0\u8bad\u7ec3\u6a21\u578b<br \/>\ndef\u00a0_train():<br \/>\n\u00a0\u00a0\u00a0\u00a0training_data\u00a0&#061;\u00a0_load_training_data(TRAINING_DATA_PATH)<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u83b7\u53d6\u6587\u672c\u548c\u7ed3\u679c&#xff0c;\u6587\u672c\u662f\u6bcf\u884c\u7684\u5b57&#xff0c;\u7ed3\u679c\u662f\u6807\u9898\u8fd8\u662f\u6b63\u6587<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u5de5\u4f5c\u7ecf\u5386<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a02018.07-2022.06\u00a0\u67d0\u67d0\u516c\u53f8\u00a0\u540e\u7aef\u5f00\u53d1\u5de5\u7a0b\u5e08\u3002<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u8d1f\u8d23\u8ba2\u5355\u7cfb\u7edf\u7684\u91cd\u6784\u3002<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u79d1\u7814\u9879\u76ee<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u57fa\u4e8e\u6df1\u5ea6\u5b66\u4e60\u7684\u67d0\u67d0\u7814\u7a76<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0[<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u00a0\u00a0\u00a0\u00a0(&#039;\u5de5\u4f5c\u7ecf\u5386&#039;,\u00a01),\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u00a0\u7b2c\u4e00\u884c\u00a0\u2192\u00a0\u6807\u9898<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u00a0\u00a0\u00a0\u00a0(&#039;2018.07-2022.06\u00a0\u67d0\u67d0\u516c\u53f8\u00a0\u540e\u7aef\u5f00\u53d1\u5de5\u7a0b\u5e08\u3002&#039;,\u00a00),\u00a0\u00a0#\u00a0\u540e\u9762\u00a0\u2192\u00a0\u6b63\u6587<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u00a0\u00a0\u00a0\u00a0(&#039;\u8d1f\u8d23\u8ba2\u5355\u7cfb\u7edf\u7684\u91cd\u6784\u3002&#039;,\u00a00),\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u00a0\u540e\u9762\u00a0\u2192\u00a0\u6b63\u6587<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u00a0\u00a0\u00a0\u00a0(&#039;\u79d1\u7814\u9879\u76ee&#039;,\u00a01),\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u00a0\u7a7a\u884c\u540e\u65b0\u6bb5\u7b2c\u4e00\u884c\u00a0\u2192\u00a0\u6807\u9898<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u00a0\u00a0\u00a0\u00a0(&#039;\u57fa\u4e8e\u6df1\u5ea6\u5b66\u4e60\u7684\u67d0\u67d0\u7814\u7a76&#039;,\u00a00),\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u00a0\u540e\u9762\u00a0\u2192\u00a0\u6b63\u6587<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0]<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u53d6\u6587\u672c<br \/>\n\u00a0\u00a0\u00a0\u00a0texts\u00a0&#061;\u00a0[item[0]\u00a0for\u00a0item\u00a0in\u00a0training_data]<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0#\u00a0\u53d6\u7ed3\u679c<br \/>\n\u00a0\u00a0\u00a0\u00a0labels\u00a0&#061;\u00a0[item[1]\u00a0for\u00a0item\u00a0in\u00a0training_data]<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0#\u628a\u5206\u8bcd\u4f5c\u4e3a\u5217\u8868<br \/>\n\u00a0\u00a0\u00a0\u00a0tokenized\u00a0&#061;\u00a0[_tokenize(t)\u00a0for\u00a0t\u00a0in\u00a0texts]<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0TF-IDF\u5411\u91cf\u5316<br \/>\n\u00a0\u00a0\u00a0\u00a0vectorizer\u00a0&#061;\u00a0TfidfVectorizer()<br \/>\n\u00a0\u00a0\u00a0\u00a0X_tfidf\u00a0&#061;\u00a0vectorizer.fit_transform(tokenized)<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0#\u00a0\u63d0\u53d6\u7ed3\u6784\u7279\u5f81<br \/>\n\u00a0\u00a0\u00a0\u00a0struct_arr\u00a0&#061;\u00a0np.array([_structural_features(t)\u00a0for\u00a0t\u00a0in\u00a0texts],\u00a0dtype&#061;np.float64)<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0#\u62fc\u63a5\u7279\u5f81<br \/>\n\u00a0\u00a0\u00a0\u00a0X\u00a0&#061;\u00a0hstack([X_tfidf,\u00a0struct_arr])<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u8bad\u7ec3\u968f\u673a\u68ee\u6797<br \/>\n\u00a0\u00a0\u00a0\u00a0model\u00a0&#061;\u00a0RandomForestClassifier(<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0n_estimators&#061;N_ESTIMATORS,<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0random_state&#061;RANDOM_STATE,<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0class_weight&#061;&#039;balanced&#039;<br \/>\n\u00a0\u00a0\u00a0\u00a0)<br \/>\n\u00a0\u00a0\u00a0\u00a0model.fit(X,\u00a0labels)<br \/>\n\u00a0\u00a0\u00a0\u00a0return\u00a0model,\u00a0vectorizer<\/p>\n<p>\u4e4b\u540e\u53ef\u4ee5\u628a\u6a21\u578b\u5b58\u4e3a\u4e24\u4e2a\u6587\u4ef6&#xff0c;\u4e00\u4e2a\u5411\u91cf\u5316\u5668&#xff0c;\u5b58\u7684\u8bcd\u5178&#xff0c;\u7528\u6765\u8f93\u51fatfidf\u7279\u5f81&#xff1b;\u4e00\u4e2a\u7528\u6765\u51b3\u7b56\u7684\u6a21\u578b\u3002<br \/>\n\u4e0d\u7528\u91cd\u590d\u8bad\u7ec3&#xff0c;\u65b9\u4fbf\u8c03\u7528\u9884\u6d4b\u770b\u6548\u679c\u3002<\/p>\n<p>\u8bad\u7ec3\u597d\u6a21\u578b\u4e4b\u540e\u5c31\u8981\u5bf9\u6bcf\u4e2a\u6807\u9898\/\u6b63\u6587\u8fdb\u884c\u8bc6\u522b<\/p>\n<p>\u63d0\u53d6\u8fd9\u4e2a\u8bc6\u522b\u7684\u53e5\u5b50\u7684\u7279\u5f81\u5e76\u51b3\u5b9a\u662f\u5426\u4fdd\u7559&#xff0c;\u901a\u8fc7\u5224\u65ad\u8fd9\u53e5\u8bdd\u662f\u5426\u5927\u4e8e\u201c\u662f\u6b63\u6587\u201d\u7684\u9608\u503c\u8fdb\u884c\u5224\u65ad\u3002<\/p>\n<p>def\u00a0_should_keep(line):<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u786e\u4fdd\u6a21\u578b\u5df2\u52a0\u8f7d<br \/>\n\u00a0\u00a0\u00a0\u00a0_ensure_model()<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u628a\u6587\u672c\u8f6c\u4e3a\u7279\u5f81\u5411\u91cf<br \/>\n\u00a0\u00a0\u00a0\u00a0tokenized\u00a0&#061;\u00a0_tokenize(line)<br \/>\n\u00a0\u00a0\u00a0\u00a0if\u00a0not\u00a0tokenized.strip():<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0True\u00a0#\u00a0\u5206\u8bcd\u540e\u6ca1\u8bcd&#xff0c;\u4e0d\u8bef\u5220&#xff0c;\u8ba4\u4e3a\u662f\u6b63\u6587&#xff0c;\u4fdd\u7559&#xff0c;\u515c\u4e2a\u5e95&#xff0c;\u4e0d\u4e22<br \/>\n\u00a0\u00a0\u00a0\u00a0X_tfidf\u00a0&#061;\u00a0_vectorizer.transform([tokenized])<br \/>\n\u00a0\u00a0\u00a0\u00a0struct_arr\u00a0&#061;\u00a0np.array([_structural_features(line)],\u00a0dtype&#061;np.float64)<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0X\u00a0&#061;\u00a0hstack([X_tfidf,\u00a0struct_arr])<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0if\u00a0X_tfidf.nnz\u00a0&#061;&#061;\u00a00:<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u00a0\u5206\u8bcd\u7684\u5411\u91cf\u90fd\u662f0&#xff0c;\u8fd8\u6709\u7ed3\u6784&#xff0c;\u5148\u901a\u8fc7&#xff0c;\u4f46\u4e0d\u8fd4\u56detrue&#xff0c;<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u00a0\u8fd9\u4e2aif\u5199\u4e0d\u5199\u90fd\u4e00\u6837&#xff0c;\u4e3a\u4e86\u7a81\u51fa\u8fd8\u6709\u7ed3\u6784\u7684\u4e8b&#xff0c;\u6240\u4ee5\u5199\u4e86\u8fd9\u4e2aif&#xff0c;\u540e\u9762\u52a0\u4e2apass<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pass<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u51b3\u7b56\u6811\u51b3\u7b56<br \/>\n\u00a0\u00a0\u00a0\u00a0proba\u00a0&#061;\u00a0_model.predict_proba(X)[0]<br \/>\n\u00a0\u00a0\u00a0\u00a0#\u00a0\u6b63\u5e38\u60c5\u51b5\u76f4\u63a5\u53d6\u51fa\u6765\u9884\u6d4b\u7684\u503c&#xff0c;\u5982\u679c\u9884\u6d4b\u51fa\u4e86\u5f02\u5e38\u7684\u8bdd\u7528\u4e2a0.5&#xff0c;\u5b9e\u9645\u4e0a\u4e0d\u4f1a\u8d70\u52300.5&#xff0c;<br 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