{"id":80089,"date":"2026-03-04T09:42:58","date_gmt":"2026-03-04T01:42:58","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/80089.html"},"modified":"2026-03-04T09:42:58","modified_gmt":"2026-03-04T01:42:58","slug":"%e6%9c%ba%e5%99%a8%e5%ad%a6%e4%b9%a0%e5%bf%85%e4%bc%9a%ef%bc%9a%e4%ba%8c%e5%88%86%e7%b1%bb%e6%a8%a1%e5%9e%8b%e8%af%84%e4%bb%b7%e6%8c%87%e6%a0%87%e8%ae%a1%e7%ae%97%e6%80%bb%e7%bb%93","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/80089.html","title":{"rendered":"\u673a\u5668\u5b66\u4e60\u5fc5\u4f1a\uff1a\u4e8c\u5206\u7c7b\u6a21\u578b\u8bc4\u4ef7\u6307\u6807\u8ba1\u7b97\u603b\u7ed3"},"content":{"rendered":"<p>\u5728\u4e8c\u5206\u7c7b\u4efb\u52a1\u4e2d&#xff0c;\u6a21\u578b\u6027\u80fd\u4e0d\u80fd\u4ec5\u901a\u8fc7\u51c6\u786e\u7387\u8fdb\u884c\u8861\u91cf&#xff0c;\u800c\u9700\u8981\u57fa\u4e8e\u6df7\u6dc6\u77e9\u9635\u5bf9\u9884\u6d4b\u7ed3\u679c\u8fdb\u884c\u66f4\u7ec6\u7c92\u5ea6\u5206\u6790\u3002TP\u3001FP\u3001FN\u3001TN \u6784\u6210\u4e86\u8bc4\u4ef7\u4f53\u7cfb\u7684\u57fa\u7840&#xff0c;\u5e76\u8fdb\u4e00\u6b65\u63a8\u5bfc\u51fa Precision\u3001Recall\u3001F1-score \u4e0e AUC \u7b49\u6838\u5fc3\u6307\u6807\u3002\u672c\u6587\u5c06\u56f4\u7ed5\u8fd9\u4e9b\u6307\u6807\u7684\u5b9a\u4e49\u4e0e\u8ba1\u7b97\u65b9\u6cd5\u8fdb\u884c\u6280\u672f\u5c42\u9762\u7684\u7cfb\u7edf\u8bf4\u660e\u3002<\/p>\n<h2>\u4e00\u3001\u6df7\u6dc6\u77e9\u9635&#xff08;Confusion Matrix&#xff09;<\/h2>\n<p>\u5728\u4e8c\u5206\u7c7b\u4efb\u52a1\u4e2d&#xff0c;\u6a21\u578b\u7684\u9884\u6d4b\u7ed3\u679c\u53ea\u6709\u4e24\u79cd\u53d6\u503c&#xff1a;\u6b63\u7c7b&#xff08;Positive&#xff09;\u4e0e\u8d1f\u7c7b&#xff08;Negative&#xff09;\u3002<br \/>\n\u4e3a\u4e86\u7cfb\u7edf\u5730\u5206\u6790\u6a21\u578b\u7684\u9884\u6d4b\u60c5\u51b5&#xff0c;\u9700\u8981\u5c06\u201c\u9884\u6d4b\u7ed3\u679c\u201d\u4e0e\u201c\u771f\u5b9e\u6807\u7b7e\u201d\u8fdb\u884c\u4ea4\u53c9\u7edf\u8ba1&#xff0c;\u8fd9\u79cd\u7edf\u8ba1\u7ed3\u6784\u5c31\u662f\u6df7\u6dc6\u77e9\u9635\u3002<\/p>\n<p>\u6df7\u6dc6\u77e9\u9635\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a 2\u00d72 \u7684\u7edf\u8ba1\u8868&#xff0c;\u7528\u4e8e\u63cf\u8ff0\u6a21\u578b\u9884\u6d4b\u4e0e\u771f\u5b9e\u60c5\u51b5\u4e4b\u95f4\u7684\u5bf9\u5e94\u5173\u7cfb\u3002<\/p>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\u9884\u6d4b\u4e3a\u6b63\u7c7b\u9884\u6d4b\u4e3a\u8d1f\u7c7b<\/tr>\n<tr>\n<td>\u5b9e\u9645\u4e3a\u6b63\u7c7b<\/td>\n<td>TP<\/td>\n<td>FN<\/td>\n<\/tr>\n<tr>\n<td>\u5b9e\u9645\u4e3a\u8d1f\u7c7b<\/td>\n<td>FP<\/td>\n<td>TN<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\ufe0f\u20e3 \u56db\u4e2a\u6838\u5fc3\u53d8\u91cf\u542b\u4e49<\/h3>\n<p>TP&#xff08;True Positive&#xff09;<\/p>\n<p>\u771f\u5b9e\u4e3a\u6b63\u7c7b&#xff0c;\u6a21\u578b\u4e5f\u9884\u6d4b\u4e3a\u6b63\u7c7b\u3002<br \/>\n\u8868\u793a\u201c\u6b63\u786e\u8bc6\u522b\u51fa\u7684\u6b63\u6837\u672c\u201d\u3002<\/p>\n<p>FP&#xff08;False Positive&#xff09;<\/p>\n<p>\u771f\u5b9e\u4e3a\u8d1f\u7c7b&#xff0c;\u4f46\u6a21\u578b\u9884\u6d4b\u4e3a\u6b63\u7c7b\u3002<br \/>\n\u8868\u793a\u201c\u8bef\u62a5\u201d\u3002<\/p>\n<p>FN&#xff08;False Negative&#xff09;<\/p>\n<p>\u771f\u5b9e\u4e3a\u6b63\u7c7b&#xff0c;\u4f46\u6a21\u578b\u9884\u6d4b\u4e3a\u8d1f\u7c7b\u3002<br \/>\n\u8868\u793a\u201c\u6f0f\u62a5\u201d\u3002<\/p>\n<p>TN&#xff08;True Negative&#xff09;<\/p>\n<p>\u771f\u5b9e\u4e3a\u8d1f\u7c7b&#xff0c;\u6a21\u578b\u4e5f\u9884\u6d4b\u4e3a\u8d1f\u7c7b\u3002<br \/>\n\u8868\u793a\u201c\u6b63\u786e\u8bc6\u522b\u51fa\u7684\u8d1f\u6837\u672c\u201d\u3002<\/p>\n<h3>2\ufe0f\u20e3 \u4ece\u6982\u7387\u89d2\u5ea6\u7406\u89e3<\/h3>\n<p>\u8bbe\u6570\u636e\u96c6\u4e2d\u5171\u6709&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6b63\u6837\u672c\u6570\u91cf&#xff1a;P<\/p>\n<\/li>\n<li>\n<p>\u8d1f\u6837\u672c\u6570\u91cf&#xff1a;N<\/p>\n<\/li>\n<\/ul>\n<p>\u5219&#xff1a;<\/p>\n<p>\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\u00a0P&#061;TP&#043;FN<\/p>\n<p>\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\u00a0N&#061;TN&#043;FP<\/p>\n<p>\u603b\u6837\u672c\u6570&#xff1a;<\/p>\n<p>\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\u00a0Total&#061;TP&#043;TN&#043;FP&#043;FN<\/p>\n<p>\u6df7\u6dc6\u77e9\u9635\u5b9e\u9645\u4e0a\u523b\u753b\u7684\u662f&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6b63\u6837\u672c\u88ab\u5206\u5230\u6b63\u7c7b\u6216\u8d1f\u7c7b\u7684\u5206\u5e03<\/p>\n<\/li>\n<li>\n<p>\u8d1f\u6837\u672c\u88ab\u5206\u5230\u6b63\u7c7b\u6216\u8d1f\u7c7b\u7684\u5206\u5e03<\/p>\n<\/li>\n<\/ul>\n<p>\u56e0\u6b64\u5b83\u672c\u8d28\u4e0a\u63cf\u8ff0\u7684\u662f\u4e00\u4e2a\u4e8c\u5206\u7c7b\u51b3\u7b56\u8fb9\u754c\u7684\u8bef\u5dee\u7ed3\u6784\u3002<\/p>\n<h2>\u4e8c\u3001Accuracy&#xff08;\u51c6\u786e\u7387&#xff09;<\/h2>\n<p>Accuracy \u662f\u6700\u76f4\u89c2\u7684\u8bc4\u4ef7\u6307\u6807&#xff0c;\u7528\u4e8e\u8861\u91cf\u6a21\u578b\u6574\u4f53\u9884\u6d4b\u6b63\u786e\u7684\u6bd4\u4f8b\u3002<\/p>\n<h3>1\ufe0f\u20e3 \u6570\u5b66\u5b9a\u4e49<\/h3>\n<p><img decoding=\"async\" alt=\"Accuracy &#061; \\\\frac{TP &#043; TN}{TP &#043; TN &#043; FP &#043; FN}\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e2187374.png\" \/><\/p>\n<p>\u8868\u793a\u6a21\u578b\u9884\u6d4b\u6b63\u786e\u7684\u6837\u672c\u6bd4\u4f8b\u3002<\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5206\u5b50&#xff1a;\u9884\u6d4b\u6b63\u786e\u7684\u6837\u672c\u6570\u91cf<\/p>\n<\/li>\n<li>\n<p>\u5206\u6bcd&#xff1a;\u6837\u672c\u603b\u6570<\/p>\n<\/li>\n<\/ul>\n<h3>2\ufe0f\u20e3 \u6280\u672f\u7406\u89e3<\/h3>\n<p>Accuracy \u8861\u91cf\u7684\u662f&#xff1a;<\/p>\n<p>\u6a21\u578b\u6574\u4f53\u9884\u6d4b\u6b63\u786e\u7684\u6bd4\u4f8b<\/p>\n<p>\u4f46\u5b83\u5e76\u4e0d\u533a\u5206\u9519\u8bef\u7c7b\u578b\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\n<p>1000 \u4e2a\u6837\u672c<\/p>\n<\/li>\n<li>\n<p>990 \u4e2a\u4e3a\u8d1f\u7c7b<\/p>\n<\/li>\n<li>\n<p>\u6a21\u578b\u5168\u90e8\u9884\u6d4b\u4e3a\u8d1f\u7c7b<\/p>\n<\/li>\n<\/ul>\n<p>\u5219&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"\\\\text{Accuracy} &#061; \\\\frac{990}{1000} &#061; 0.99\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e219bcae.png\" \/><\/p>\n<p>\u4f46\u6a21\u578b\u5b9e\u9645\u4e0a\u5b8c\u5168\u6ca1\u6709\u8bc6\u522b\u6b63\u7c7b\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u5728\u7c7b\u522b\u4e25\u91cd\u4e0d\u5e73\u8861\u65f6&#xff0c;Accuracy \u53ef\u80fd\u5931\u53bb\u53c2\u8003\u610f\u4e49\u3002<\/p>\n<h2>\u4e09\u3001Precision&#xff08;\u7cbe\u786e\u7387&#xff09;<\/h2>\n<p>Precision&#xff08;\u7cbe\u786e\u7387&#xff09;\u7528\u4e8e\u8861\u91cf\u6a21\u578b\u9884\u6d4b\u4e3a\u6b63\u7c7b\u7684\u6837\u672c\u4e2d&#xff0c;\u6709\u591a\u5c11\u662f\u771f\u6b63\u7684\u6b63\u7c7b\u3002<\/p>\n<p>\u5b83\u56de\u7b54\u7684\u95ee\u9898\u662f&#xff1a;<\/p>\n<p>\u5f53\u6a21\u578b\u201c\u5224\u65ad\u4e3a\u6b63\u7c7b\u201d\u65f6&#xff0c;\u5b83\u6709\u591a\u5927\u6982\u7387\u662f\u6b63\u786e\u7684&#xff1f;<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4&#xff0c;Precision \u5173\u6ce8\u7684\u662f\u9884\u6d4b\u7ed3\u679c\u7684\u53ef\u4fe1\u5ea6\u3002<\/p>\n<h3>1\ufe0f\u20e3 \u6570\u5b66\u5b9a\u4e49<\/h3>\n<p><img decoding=\"async\" alt=\"\\\\text{Precision} &#061; \\\\frac{TP}{TP &#043; FP}\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21a1736.png\" \/><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5206\u6bcd&#xff1a;\u6a21\u578b\u9884\u6d4b\u4e3a\u6b63\u7c7b\u7684\u6837\u672c\u603b\u6570<\/p>\n<\/li>\n<li>\n<p>\u5206\u5b50&#xff1a;\u5176\u4e2d\u771f\u5b9e\u4e3a\u6b63\u7c7b\u7684\u6570\u91cf<\/p>\n<\/li>\n<\/ul>\n<h3>2\ufe0f\u20e3 \u6280\u672f\u7406\u89e3<\/h3>\n<p>Precision \u8861\u91cf\u7684\u662f\u6a21\u578b\u7684\u8bef\u62a5\u63a7\u5236\u80fd\u529b\u3002<\/p>\n<p>\u5982\u679c Precision \u5f88\u9ad8&#xff0c;\u8bf4\u660e&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6a21\u578b\u9884\u6d4b\u4e3a\u6b63\u7c7b\u65f6\u901a\u5e38\u662f\u5bf9\u7684<\/p>\n<\/li>\n<li>\n<p>\u8bef\u62a5&#xff08;False Positive&#xff09;\u8f83\u5c11<\/p>\n<\/li>\n<\/ul>\n<p>\u5982\u679c Precision \u5f88\u4f4e&#xff0c;\u5219\u8bf4\u660e&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6a21\u578b\u7ecf\u5e38\u628a\u8d1f\u7c7b\u8bef\u5224\u4e3a\u6b63\u7c7b<\/p>\n<\/li>\n<li>\n<p>\u9884\u6d4b\u7ed3\u679c\u7684\u53ef\u4fe1\u5ea6\u8f83\u4f4e<\/p>\n<\/li>\n<\/ul>\n<p>Precision \u4e3b\u8981\u5173\u6ce8\u7684\u662f&#xff1a;<\/p>\n<p>FP&#xff08;\u5047\u6b63\u4f8b&#xff09;\u5bf9\u6a21\u578b\u6027\u80fd\u7684\u5f71\u54cd<\/p>\n<p>FP \u8d8a\u591a&#xff0c;Precision \u8d8a\u4f4e\u3002<\/p>\n<h3>3\ufe0f\u20e3 \u4e3e\u4f8b\u8bf4\u660e<\/h3>\n<p>\u5047\u8bbe&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6a21\u578b\u9884\u6d4b\u4e3a\u6b63\u7c7b\u7684\u6837\u672c\u5171\u6709 50 \u4e2a<\/p>\n<\/li>\n<li>\n<p>\u5176\u4e2d 40 \u4e2a\u662f\u771f\u6b63\u7684\u6b63\u7c7b<\/p>\n<\/li>\n<li>\n<p>10 \u4e2a\u662f\u8bef\u5224\u7684\u8d1f\u7c7b<\/p>\n<\/li>\n<\/ul>\n<p>\u5219&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"Precision &#061; \\\\frac{40}{50} &#061; 0.8\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21a6d0f.png\" \/><\/p>\n<p>\u8fd9\u8868\u793a&#xff1a;<\/p>\n<p>\u6a21\u578b\u6bcf\u9884\u6d4b 100 \u6b21\u6b63\u7c7b&#xff0c;\u5927\u7ea6\u6709 80 \u6b21\u662f\u6b63\u786e\u7684\u3002<\/p>\n<h3>4\ufe0f\u20e3 \u5e94\u7528\u573a\u666f<\/h3>\n<p>Precision \u9002\u7528\u4e8e&#xff1a;<\/p>\n<p>\u8bef\u62a5&#xff08;False Positive&#xff09;\u6210\u672c\u8f83\u9ad8\u7684\u573a\u666f\u3002<\/p>\n<p>\u5982\u679c\u6a21\u578b\u628a\u201c\u8d1f\u7c7b\u201d\u9519\u8bef\u5224\u65ad\u4e3a\u201c\u6b63\u7c7b\u201d\u4f1a\u5e26\u6765\u4e25\u91cd\u540e\u679c&#xff0c;\u90a3\u4e48\u5c31\u9700\u8981\u4f18\u5148\u5173\u6ce8 Precision\u3002<\/p>\n<p>\u5178\u578b\u5e94\u7528\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5783\u573e\u90ae\u4ef6\u8fc7\u6ee4&#xff08;\u4e0d\u80fd\u8bef\u5220\u6b63\u5e38\u90ae\u4ef6&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u91d1\u878d\u98ce\u63a7\u7cfb\u7edf&#xff08;\u4e0d\u80fd\u8bef\u5224\u6b63\u5e38\u7528\u6237\u4e3a\u6b3a\u8bc8\u8005&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u6743\u9650\u8ba4\u8bc1\u7cfb\u7edf&#xff08;\u4e0d\u80fd\u8bef\u8bc6\u522b\u975e\u6cd5\u7528\u6237\u4e3a\u5408\u6cd5\u7528\u6237&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u6cd5\u5f8b\u6216\u98ce\u63a7\u5ba1\u6838\u7cfb\u7edf&#xff08;\u8bef\u5224\u6210\u672c\u6781\u9ad8&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u8fd9\u4e9b\u573a\u666f\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5b81\u53ef\u5c11\u62a5&#xff08;Recall \u4f4e\u4e00\u70b9&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u4e5f\u4e0d\u80fd\u8bef\u62a5&#xff08;Precision \u5fc5\u987b\u9ad8&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p>\u6362\u53e5\u8bdd\u8bf4&#xff1a;<\/p>\n<p>\u5f53\u201c\u9519\u6740\u65e0\u8f9c\u201d\u7684\u4ee3\u4ef7\u5f88\u9ad8\u65f6&#xff0c;\u5e94\u91cd\u70b9\u5173\u6ce8 Precision\u3002<\/p>\n<h2>\u56db\u3001Recall&#xff08;\u53ec\u56de\u7387&#xff09;<\/h2>\n<p>Recall&#xff08;\u53ec\u56de\u7387&#xff09;\u7528\u4e8e\u8861\u91cf\u6a21\u578b\u5bf9\u771f\u5b9e\u6b63\u7c7b\u6837\u672c\u7684\u8bc6\u522b\u80fd\u529b\u3002<br \/>\n\u5b83\u56de\u7b54\u7684\u95ee\u9898\u662f&#xff1a;<\/p>\n<p>\u5728\u6240\u6709\u771f\u6b63\u5c5e\u4e8e\u6b63\u7c7b\u7684\u6837\u672c\u4e2d&#xff0c;\u6a21\u578b\u6210\u529f\u627e\u56de\u4e86\u591a\u5c11&#xff1f;<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4&#xff0c;Recall \u5173\u6ce8\u7684\u662f\u6a21\u578b\u662f\u5426\u201c\u6f0f\u6389\u201d\u4e86\u6b63\u7c7b\u6837\u672c\u3002<\/p>\n<h3>1\ufe0f\u20e3 \u6570\u5b66\u5b9a\u4e49<\/h3>\n<p><img decoding=\"async\" alt=\"$Recall &#061; \\\\frac{TP}{TP &#043; FN}$\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21ac416.png\" \/><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5206\u6bcd&#xff1a;\u771f\u5b9e\u6b63\u7c7b\u6837\u672c\u603b\u6570<\/p>\n<\/li>\n<li>\n<p>\u5206\u5b50&#xff1a;\u88ab\u6b63\u786e\u8bc6\u522b\u7684\u6b63\u7c7b\u6837\u672c<\/p>\n<\/li>\n<\/ul>\n<h3>2\ufe0f\u20e3 \u6280\u672f\u7406\u89e3<\/h3>\n<p>Recall \u8861\u91cf\u7684\u662f\u6a21\u578b\u7684\u8986\u76d6\u80fd\u529b&#xff08;Coverage&#xff09;\u3002<\/p>\n<p>\u5982\u679c\u4e00\u4e2a\u6a21\u578b\u7684 Recall \u5f88\u9ad8&#xff0c;\u8bf4\u660e&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5b83\u51e0\u4e4e\u6ca1\u6709\u6f0f\u6389\u6b63\u7c7b\u6837\u672c<\/p>\n<\/li>\n<li>\n<p>\u5bf9\u6b63\u7c7b\u7684\u68c0\u6d4b\u80fd\u529b\u5f88\u5f3a<\/p>\n<\/li>\n<\/ul>\n<p>\u4f46\u8fd9\u5e76\u4e0d\u610f\u5473\u7740\u6a21\u578b\u4e00\u5b9a\u51c6\u786e&#xff0c;\u56e0\u4e3a\u5b83\u53ef\u80fd\u4f1a\u628a\u5f88\u591a\u8d1f\u7c7b\u4e5f\u8bef\u5224\u4e3a\u6b63\u7c7b&#xff08;Precision \u53ef\u80fd\u5f88\u4f4e&#xff09;\u3002<\/p>\n<p>\u56e0\u6b64&#xff1a;<\/p>\n<ul>\n<li>\n<p>Recall \u5173\u6ce8\u7684\u662f \u6f0f\u68c0\u95ee\u9898&#xff08;FN&#xff09;<\/p>\n<\/li>\n<li>\n<p>FN \u8d8a\u591a&#xff0c;Recall \u8d8a\u4f4e<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u5f88\u591a\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u6f0f\u68c0\u7684\u4ee3\u4ef7\u8fdc\u9ad8\u4e8e\u8bef\u68c0\u3002\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u75be\u75c5\u7b5b\u67e5&#xff08;\u4e0d\u80fd\u6f0f\u6389\u771f\u6b63\u7684\u75c5\u4eba&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b&#xff08;\u4e0d\u80fd\u6f0f\u6389\u771f\u5b9e\u653b\u51fb&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u91d1\u878d\u6b3a\u8bc8\u8bc6\u522b&#xff08;\u4e0d\u80fd\u653e\u8fc7\u5f02\u5e38\u4ea4\u6613&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u8fd9\u4e9b\u573a\u666f\u4e2d&#xff0c;\u9ad8 Recall \u5f80\u5f80\u6bd4\u9ad8 Accuracy \u66f4\u91cd\u8981\u3002<\/p>\n<h3>3\ufe0f\u20e3 \u4e3e\u4f8b\u8bf4\u660e<\/h3>\n<p>\u5047\u8bbe&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6709 100 \u4e2a\u771f\u5b9e\u6b63\u7c7b\u6837\u672c<\/p>\n<\/li>\n<li>\n<p>\u6a21\u578b\u6210\u529f\u8bc6\u522b\u51fa 85 \u4e2a<\/p>\n<\/li>\n<li>\n<p>\u6f0f\u6389 15 \u4e2a<\/p>\n<\/li>\n<\/ul>\n<p>\u5219&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"Recall &#061; \\\\frac{85}{100} &#061; 0.85\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21b19f2.png\" \/><\/p>\n<p>\u8fd9\u8868\u793a\u6a21\u578b\u627e\u56de\u4e86 85% \u7684\u6b63\u7c7b\u6837\u672c\u3002<\/p>\n<p>\u5982\u679c Recall \u5f88\u4f4e&#xff0c;\u6bd4\u5982 0.3&#xff0c;\u5c31\u8bf4\u660e\u6a21\u578b\u6f0f\u6389\u4e86\u5927\u91cf\u771f\u6b63\u91cd\u8981\u7684\u6837\u672c\u3002<\/p>\n<h3>4\ufe0f\u20e3 \u5e94\u7528\u573a\u666f<\/h3>\n<p>Recall \u9002\u7528\u4e8e&#xff1a;<\/p>\n<p>\u6f0f\u62a5&#xff08;False Negative&#xff09;\u6210\u672c\u8f83\u9ad8\u7684\u573a\u666f\u3002<\/p>\n<p>\u5982\u679c\u6a21\u578b\u6f0f\u6389\u771f\u6b63\u7684\u6b63\u7c7b\u6837\u672c\u4f1a\u5e26\u6765\u4e25\u91cd\u540e\u679c&#xff0c;\u90a3\u4e48\u5c31\u5fc5\u987b\u4f18\u5148\u4fdd\u8bc1 Recall\u3002<\/p>\n<p>\u5178\u578b\u5e94\u7528\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u533b\u7597\u75be\u75c5\u7b5b\u67e5&#xff08;\u4e0d\u80fd\u6f0f\u6389\u771f\u6b63\u7684\u60a3\u8005&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u7f51\u7edc\u5165\u4fb5\u68c0\u6d4b&#xff08;\u4e0d\u80fd\u653e\u8fc7\u771f\u5b9e\u653b\u51fb&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u6b3a\u8bc8\u68c0\u6d4b&#xff08;\u4e0d\u80fd\u653e\u8fc7\u5f02\u5e38\u4ea4\u6613&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u6545\u969c\u62a5\u8b66\u7cfb\u7edf&#xff08;\u4e0d\u80fd\u6f0f\u6389\u771f\u5b9e\u6545\u969c&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u8fd9\u4e9b\u573a\u666f\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5b81\u53ef\u591a\u62a5&#xff08;Precision \u4f4e\u4e00\u70b9&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u4e5f\u4e0d\u80fd\u6f0f\u62a5&#xff08;Recall \u5fc5\u987b\u9ad8&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p>\u6362\u53e5\u8bdd\u8bf4&#xff1a;<\/p>\n<p>\u5f53\u201c\u6f0f\u6389\u5173\u952e\u6837\u672c\u201d\u7684\u4ee3\u4ef7\u5f88\u9ad8\u65f6&#xff0c;\u5e94\u91cd\u70b9\u5173\u6ce8 Recall<\/p>\n<h2>\u4e94\u3001F1-score<\/h2>\n<p>F1-score \u662f Precision \u4e0e Recall \u7684\u8c03\u548c\u5e73\u5747\u6570\u3002<\/p>\n<h3>1\ufe0f\u20e3 \u6570\u5b66\u516c\u5f0f<\/h3>\n<p><img decoding=\"async\" alt=\"F_1 &#061; \\\\frac{2 \\\\cdot Precision \\\\cdot Recall}{Precision &#043; Recall}\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21b6f99.png\" \/><\/p>\n<p>\u5c55\u5f00\u5f62\u5f0f&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"F_1 &#061; \\\\frac{2TP}{2TP &#043; FP &#043; FN}\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21bc88d.png\" \/><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\n<p>TP&#xff1a;\u771f\u6b63\u4f8b<\/p>\n<\/li>\n<li>\n<p>FP&#xff1a;\u5047\u6b63\u4f8b<\/p>\n<\/li>\n<li>\n<p>FN&#xff1a;\u5047\u8d1f\u4f8b<\/p>\n<\/li>\n<\/ul>\n<h3>2\ufe0f\u20e3 \u6280\u672f\u7406\u89e3<\/h3>\n<p>F1-score \u4f7f\u7528\u7684\u662f\u8c03\u548c\u5e73\u5747\u6570&#xff08;Harmonic Mean&#xff09;&#xff0c;\u800c\u4e0d\u662f\u666e\u901a\u7684\u7b97\u672f\u5e73\u5747\u6570\u3002<\/p>\n<p>\u8c03\u548c\u5e73\u5747\u6570\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u5e73\u5747\u65b9\u5f0f\u3002<\/p>\n<p>\u5bf9\u4e8e\u4e24\u4e2a\u6570 aaa \u548c bbb&#xff0c;\u8c03\u548c\u5e73\u5747\u6570\u5b9a\u4e49\u4e3a&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"H &#061; \\\\frac{2ab}{a &#043; b}\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21c192f.png\" \/><\/p>\n<p>\u4e3a\u4ec0\u4e48\u4f7f\u7528\u8c03\u548c\u5e73\u5747&#xff1f;<\/p>\n<p>\u56e0\u4e3a\u8c03\u548c\u5e73\u5747\u4f1a\u5bf9\u8f83\u5c0f\u7684\u6570\u503c\u66f4\u52a0\u654f\u611f\u3002\u53ea\u8981\u5176\u4e2d\u4e00\u4e2a\u6570\u5f88\u5c0f&#xff0c;\u7ed3\u679c\u5c31\u4f1a\u88ab\u5927\u5e45\u62c9\u4f4e\u3002<\/p>\n<p>\u8fd9\u610f\u5473\u7740&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5982\u679c Precision \u5f88\u9ad8\u4f46 Recall \u5f88\u4f4e&#xff0c;F1 \u4e0d\u4f1a\u5f88\u9ad8<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c Recall \u5f88\u9ad8\u4f46 Precision \u5f88\u4f4e&#xff0c;F1 \u4e5f\u4e0d\u4f1a\u5f88\u9ad8<\/p>\n<\/li>\n<li>\n<p>\u53ea\u6709\u5f53\u4e24\u8005\u90fd\u6bd4\u8f83\u5747\u8861\u65f6&#xff0c;F1 \u624d\u4f1a\u9ad8<\/p>\n<\/li>\n<\/ul>\n<p>\u56e0\u6b64&#xff0c;F1-score \u5f3a\u8c03\u7684\u662f&#xff1a;<\/p>\n<p>\u6a21\u578b\u662f\u5426\u5728\u201c\u8bef\u62a5\u201d\u548c\u201c\u6f0f\u62a5\u201d\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861<\/p>\n<h3>3\ufe0f\u20e3 \u4e3e\u4f8b\u8bf4\u660e<\/h3>\n<p>\u5047\u8bbe&#xff1a;<\/p>\n<ul>\n<li>\n<p>Precision &#061; 0.9<\/p>\n<\/li>\n<li>\n<p>Recall &#061; 0.6<\/p>\n<\/li>\n<\/ul>\n<p>\u5219&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"F_1 &#061; \\\\frac{2 \\\\cdot 0.9 \\\\cdot 0.6}{0.9 &#043; 0.6}\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21c65c6.png\" \/><\/p>\n<p>\u8ba1\u7b97\u7ed3\u679c&#xff1a;<\/p>\n<p>F1 \u2248 0.72<\/p>\n<p>\u53ef\u4ee5\u770b\u5230&#xff0c;\u5373\u4f7f Precision \u5f88\u9ad8&#xff0c;\u4f46\u56e0\u4e3a Recall \u8f83\u4f4e&#xff0c;F1 \u4e5f\u4e0d\u4f1a\u7279\u522b\u9ad8\u3002<\/p>\n<h3>4\ufe0f\u20e3 \u5e94\u7528\u573a\u666f\u5206\u6790<\/h3>\n<p>F1-score \u7279\u522b\u9002\u7528\u4e8e&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u7c7b\u522b\u4e25\u91cd\u4e0d\u5e73\u8861\u95ee\u9898<\/p>\n<\/li>\n<li>\n<p>\u4e0d\u80fd\u5355\u72ec\u4f9d\u8d56 Accuracy \u7684\u573a\u666f<\/p>\n<\/li>\n<li>\n<p>\u540c\u65f6\u5173\u6ce8\u8bef\u62a5\u4e0e\u6f0f\u62a5\u7684\u4efb\u52a1<\/p>\n<\/li>\n<\/ul>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u533b\u7597\u8bca\u65ad<\/p>\n<\/li>\n<li>\n<p>\u5165\u4fb5\u68c0\u6d4b<\/p>\n<\/li>\n<li>\n<p>\u6b3a\u8bc8\u8bc6\u522b<\/p>\n<\/li>\n<li>\n<p>\u4fe1\u606f\u68c0\u7d22<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u8fd9\u4e9b\u4efb\u52a1\u4e2d&#xff0c;\u5355\u72ec\u4f7f\u7528 Accuracy \u53ef\u80fd\u5177\u6709\u8bef\u5bfc\u6027&#xff0c;\u800c F1-score \u80fd\u66f4\u5168\u9762\u53cd\u6620\u6a21\u578b\u6027\u80fd\u3002<\/p>\n<h2>\u516d\u3001ROC \u66f2\u7ebf<\/h2>\n<p>ROC&#xff08;Receiver Operating Characteristic&#xff09;\u66f2\u7ebf\u7528\u4e8e\u5206\u6790\u6a21\u578b\u5728\u4e0d\u540c\u5206\u7c7b\u9608\u503c\u4e0b\u7684\u6574\u4f53\u8868\u73b0\u80fd\u529b\u3002<\/p>\n<p>\u5206\u7c7b\u9608\u503c\u7684\u610f\u601d\u662f&#xff1a;<\/p>\n<p>\u5f53\u6a21\u578b\u9884\u6d4b\u6982\u7387 \u2265 \u9608\u503c\u65f6&#xff0c;\u5224\u4e3a\u6b63\u7c7b<br \/>\n\u5f53\u6a21\u578b\u9884\u6d4b\u6982\u7387 &lt; \u9608\u503c\u65f6&#xff0c;\u5224\u4e3a\u8d1f\u7c7b<\/p>\n<p>\u4f8b\u5982\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff1a;<\/p>\n<p>\u9608\u503c &#061; 0.5<\/p>\n<p>\u4e5f\u5c31\u662f&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6982\u7387 \u2265 0.5 \u2192 \u6b63\u7c7b<\/p>\n<\/li>\n<li>\n<p>\u6982\u7387 &lt; 0.5 \u2192 \u8d1f\u7c7b<\/p>\n<\/li>\n<\/ul>\n<h3>1\ufe0f\u20e3 \u6570\u5b66\u516c\u5f0f<\/h3>\n<p>ROC \u66f2\u7ebf\u672c\u8d28\u4e0a\u5c31\u662f&#xff1a;<\/p>\n<p>\u4ee5 FPR \u4e3a\u6a2a\u8f74&#xff0c;TPR \u4e3a\u7eb5\u8f74&#xff0c;\u7ed8\u5236\u51fa\u7684\u66f2\u7ebf\u3002<\/p>\n<p>\u4e24\u4e2a\u6838\u5fc3\u6307\u6807\u4e3a<\/p>\n<p><img decoding=\"async\" alt=\"TPR &#061; \\\\frac{TP}{TP &#043; FN}\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21cad8c.png\" \/><\/p>\n<p><img decoding=\"async\" alt=\"FPR &#061; \\\\frac{FP}{FP &#043; TN}\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21cff33.png\" \/><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\n<p>TPR&#xff08;True Positive Rate&#xff09;&#xff1a;\u771f\u6b63\u7387&#xff0c;\u4e5f\u5c31\u662f Recall<\/p>\n<\/li>\n<li>\n<p>FPR&#xff08;False Positive Rate&#xff09;&#xff1a;\u5047\u6b63\u7387<\/p>\n<\/li>\n<\/ul>\n<p>\u9700\u8981\u6ce8\u610f&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"TPR &#061; Recall\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21d4f1c.png\" \/><\/p>\n<h3>2\ufe0f\u20e3 \u6280\u672f\u7406\u89e3<\/h3>\n<p>ROC \u66f2\u7ebf\u63cf\u8ff0\u7684\u662f&#xff1a;<\/p>\n<p>\u5728\u4e0d\u540c\u5206\u7c7b\u9608\u503c\u4e0b&#xff0c;\u6a21\u578b\u201c\u67e5\u5168\u7387\u201d\u548c\u201c\u8bef\u62a5\u7387\u201d\u7684\u53d8\u5316\u5173\u7cfb\u3002<\/p>\n<p>\u5f53\u9608\u503c\u964d\u4f4e\u65f6&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6a21\u578b\u66f4\u5bb9\u6613\u5224\u4e3a\u6b63\u7c7b<\/p>\n<\/li>\n<li>\n<p>TPR \u589e\u5927<\/p>\n<\/li>\n<li>\n<p>FPR \u4e5f\u589e\u5927<\/p>\n<\/li>\n<\/ul>\n<p>\u5f53\u9608\u503c\u5347\u9ad8\u65f6&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6a21\u578b\u66f4\u4e25\u683c<\/p>\n<\/li>\n<li>\n<p>TPR \u964d\u4f4e<\/p>\n<\/li>\n<li>\n<p>FPR \u4e5f\u964d\u4f4e<\/p>\n<\/li>\n<\/ul>\n<p>\u7406\u60f3\u6a21\u578b\u7684 ROC \u66f2\u7ebf\u5e94\u5c3d\u91cf\u9760\u8fd1\u5de6\u4e0a\u89d2&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5de6\u4e0a\u89d2\u70b9 (0,1) \u8868\u793a\u5b8c\u7f8e\u5206\u7c7b<\/p>\n<\/li>\n<li>\n<p>\u5bf9\u89d2\u7ebf\u8868\u793a\u968f\u673a\u5206\u7c7b<\/p>\n<\/li>\n<\/ul>\n<p>ROC \u672c\u8d28\u4e0a\u8861\u91cf\u7684\u662f\u6a21\u578b\u7684\u6574\u4f53\u533a\u5206\u80fd\u529b&#xff0c;\u800c\u4e0d\u662f\u67d0\u4e00\u4e2a\u56fa\u5b9a\u9608\u503c\u4e0b\u7684\u8868\u73b0\u3002<\/p>\n<h3>3\ufe0f\u20e3 \u4e3e\u4f8b\u8bf4\u660e<\/h3>\n<p>\u5047\u8bbe\u6a21\u578b\u8f93\u51fa\u6982\u7387&#xff1a;<\/p>\n<table>\n<tr>\u6837\u672c\u771f\u5b9e\u7c7b\u522b\u9884\u6d4b\u6982\u7387<\/tr>\n<tbody>\n<tr>\n<td>A<\/td>\n<td>\u6b63\u7c7b<\/td>\n<td>0.9<\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>\u6b63\u7c7b<\/td>\n<td>0.7<\/td>\n<\/tr>\n<tr>\n<td>C<\/td>\n<td>\u8d1f\u7c7b<\/td>\n<td>0.6<\/td>\n<\/tr>\n<tr>\n<td>D<\/td>\n<td>\u8d1f\u7c7b<\/td>\n<td>0.2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5f53\u9608\u503c\u4e3a 0.5 \u65f6&#xff1a;<\/p>\n<ul>\n<li>\n<p>TPR \u8f83\u9ad8<\/p>\n<\/li>\n<li>\n<p>FPR \u4e5f\u4f1a\u4e0a\u5347<\/p>\n<\/li>\n<\/ul>\n<p>\u5f53\u9608\u503c\u4e3a 0.8 \u65f6&#xff1a;<\/p>\n<ul>\n<li>\n<p>TPR \u964d\u4f4e<\/p>\n<\/li>\n<li>\n<p>FPR \u964d\u4f4e<\/p>\n<\/li>\n<\/ul>\n<p>\u968f\u7740\u9608\u503c\u4e0d\u65ad\u53d8\u5316&#xff0c;\u6bcf\u4e00\u4e2a\u9608\u503c\u90fd\u4f1a\u4ea7\u751f&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"(FPR, TPR)\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21d9e42.png\" \/><\/p>\n<p>\u6240\u6709\u8fd9\u4e9b\u70b9\u8fde\u8d77\u6765&#xff1a;<\/p>\n<p>\u5c31\u5f62\u6210\u4e86 ROC \u66f2\u7ebf\u3002<\/p>\n<h2>\u4e03\u3001AUC&#xff08;Area Under Curve&#xff09;<\/h2>\n<p>AUC \u8868\u793a ROC \u66f2\u7ebf\u4e0b\u7684\u9762\u79ef&#xff0c;\u662f\u5bf9\u6a21\u578b\u6574\u4f53\u533a\u5206\u80fd\u529b\u7684\u91cf\u5316\u6307\u6807\u3002<\/p>\n<p>1\ufe0f\u20e3 \u6570\u5b66\u516c\u5f0f<\/p>\n<p><img decoding=\"async\" alt=\"AUC &#061; \\\\int_0^1 TPR(FPR) d(FPR)\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21ded64.png\" \/><\/p>\n<p>\u53d6\u503c\u8303\u56f4&#xff1a;<\/p>\n<p><img decoding=\"async\" alt=\"0 \\\\le AUC \\\\le 1\" class=\"mathcode\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260304014257-69a78e21e64ae.png\" \/><\/p>\n<h3>2\ufe0f\u20e3 \u6280\u672f\u7406\u89e3<\/h3>\n<p>AUC \u53ef\u4ee5\u7406\u89e3\u4e3a&#xff1a;<\/p>\n<p>\u968f\u673a\u62bd\u53d6\u4e00\u4e2a\u6b63\u6837\u672c\u548c\u4e00\u4e2a\u8d1f\u6837\u672c&#xff0c;\u6a21\u578b\u5c06\u6b63\u6837\u672c\u6392\u5728\u8d1f\u6837\u672c\u524d\u9762\u7684\u6982\u7387\u3002<\/p>\n<p>\u5982\u679c&#xff1a;<\/p>\n<ul>\n<li>\n<p>AUC &#061; 0.5 \u2192 \u76f8\u5f53\u4e8e\u968f\u673a\u731c\u6d4b<\/p>\n<\/li>\n<li>\n<p>AUC \u63a5\u8fd1 1 \u2192 \u533a\u5206\u80fd\u529b\u5f3a<\/p>\n<\/li>\n<li>\n<p>AUC \u63a5\u8fd1 0 \u2192 \u6a21\u578b\u5224\u65ad\u65b9\u5411\u5b8c\u5168\u9519\u8bef<\/p>\n<\/li>\n<\/ul>\n<p>AUC \u8861\u91cf\u7684\u662f\u6a21\u578b\u7684\u6392\u5e8f\u80fd\u529b&#xff0c;\u800c\u4e0d\u662f\u67d0\u4e2a\u56fa\u5b9a\u9608\u503c\u4e0b\u7684\u5206\u7c7b\u7ed3\u679c\u3002<\/p>\n<h3>3\ufe0f\u20e3 \u4e3e\u4f8b\u8bf4\u660e<\/h3>\n<p>\u5047\u8bbe&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6a21\u578b\u5bf9\u6b63\u7c7b\u6837\u672c\u7ed9\u51fa\u7684\u6982\u7387\u666e\u904d\u9ad8\u4e8e\u8d1f\u7c7b<\/p>\n<\/li>\n<li>\n<p>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b&#xff0c;\u6b63\u6837\u672c\u5f97\u5206 &gt; \u8d1f\u6837\u672c\u5f97\u5206<\/p>\n<\/li>\n<\/ul>\n<p>\u5219 AUC \u4f1a\u63a5\u8fd1 1\u3002<\/p>\n<p>\u5982\u679c&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6b63\u8d1f\u6837\u672c\u5f97\u5206\u6df7\u6742\u4e25\u91cd<\/p>\n<\/li>\n<\/ul>\n<p>\u5219 AUC \u63a5\u8fd1 0.5\u3002<\/p>\n<hr \/>\n<h2>\u603b\u7ed3&#xff1a;\u6307\u6807\u9009\u62e9\u5efa\u8bae<\/h2>\n<p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u53ef\u4ee5\u6839\u636e\u4efb\u52a1\u76ee\u6807\u9009\u62e9\u6307\u6807&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u7c7b\u522b\u5747\u8861 \u2192 Accuracy \u53ef\u4f5c\u4e3a\u53c2\u8003<\/p>\n<\/li>\n<li>\n<p>\u8bef\u62a5\u4ee3\u4ef7\u9ad8 \u2192 \u5173\u6ce8 Precision<\/p>\n<\/li>\n<li>\n<p>\u6f0f\u62a5\u4ee3\u4ef7\u9ad8 \u2192 \u5173\u6ce8 Recall<\/p>\n<\/li>\n<li>\n<p>\u9700\u8981\u5e73\u8861 \u2192 \u4f7f\u7528 F1-score<\/p>\n<\/li>\n<li>\n<p>\u60f3\u8bc4\u4f30\u6574\u4f53\u533a\u5206\u80fd\u529b \u2192 \u4f7f\u7528 AUC<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u8bba\u6587\u6216\u5de5\u7a0b\u5b9e\u8df5\u4e2d&#xff0c;\u901a\u5e38\u4f1a\u540c\u65f6\u62a5\u544a&#xff1a;<\/p>\n<p>Precision &#043; Recall &#043; F1 &#043; AUC<\/p>\n<p>\u4ee5\u5168\u9762\u53cd\u6620\u6a21\u578b\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u4e8c\u5206\u7c7b\u4efb\u52a1\u4e2d&#xff0c;\u6a21\u578b\u6027\u80fd\u4e0d\u80fd\u4ec5\u901a\u8fc7\u51c6\u786e\u7387\u8fdb\u884c\u8861\u91cf&#xff0c;\u800c\u9700\u8981\u57fa\u4e8e\u6df7\u6dc6\u77e9\u9635\u5bf9\u9884\u6d4b\u7ed3\u679c\u8fdb\u884c\u66f4\u7ec6\u7c92\u5ea6\u5206\u6790\u3002TP\u3001FP\u3001FN\u3001TN \u6784\u6210\u4e86\u8bc4\u4ef7\u4f53\u7cfb\u7684\u57fa\u7840&#xff0c;\u5e76\u8fdb\u4e00\u6b65\u63a8\u5bfc\u51fa Precision\u3001Recall\u3001F1-score \u4e0e AUC \u7b49\u6838\u5fc3\u6307\u6807\u3002\u672c\u6587\u5c06\u56f4\u7ed5\u8fd9\u4e9b\u6307\u6807\u7684\u5b9a\u4e49\u4e0e\u8ba1\u7b97\u65b9\u6cd5\u8fdb\u884c\u6280\u672f\u5c42\u9762\u7684\u7cfb\u7edf\u8bf4\u660e\u3002\u4e00\u3001\u6df7\u6dc6\u77e9\u9635&#xff08;Confusion Matrix&#xff09;\u5728\u4e8c\u5206\u7c7b\u4efb\u52a1\u4e2d&#xff0c;\u6a21\u578b\u7684\u9884\u6d4b\u7ed3\u679c\u53ea\u6709\u4e24\u79cd\u53d6\u503c&amp;#xff1a<\/p>\n","protected":false},"author":2,"featured_media":80073,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[587,81,50,2395,207,86],"topic":[],"class_list":["post-80089","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-587","tag-python","tag-50","tag-2395","tag-207","tag-86"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u673a\u5668\u5b66\u4e60\u5fc5\u4f1a\uff1a\u4e8c\u5206\u7c7b\u6a21\u578b\u8bc4\u4ef7\u6307\u6807\u8ba1\u7b97\u603b\u7ed3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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