{"id":627,"date":"2023-03-25T23:50:16","date_gmt":"2023-09-27T09:47:17","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%9c%a8r%e7%bc%96%e7%a8%8b%e4%b8%ad%e7%bb%98%e5%88%b6roc%e6%9b%b2%e7%ba%bf\/"},"modified":"2025-08-02T23:38:54","modified_gmt":"2025-08-02T15:38:54","slug":"%e5%9c%a8r%e7%bc%96%e7%a8%8b%e4%b8%ad%e7%bb%98%e5%88%b6roc%e6%9b%b2%e7%ba%bf","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8r%e7%bc%96%e7%a8%8b%e4%b8%ad%e7%bb%98%e5%88%b6roc%e6%9b%b2%e7%ba%bf\/","title":{"rendered":"R\u8bed\u8a00\u7ed8\u5236ROC\u66f2\u7ebf\u5b8c\u5168\u6307\u5357\uff1a\u4ece\u5165\u95e8\u5230\u7cbe\u901a"},"content":{"rendered":"<p>\u5927\u5bb6\u597d\uff01\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4f1a\u8be6\u7ec6\u4e86\u89e3\u673a\u5668\u5b66\u4e60\u7684\u4e00\u4e2a\u91cd\u8981\u9519\u8bef\u6307\u6807\u2014\u2014\u5728R\u7f16\u7a0b\u4e2d\u7ed8\u5236ROC\u66f2\u7ebf\u3002<\/p>\n<p>\u597d\u7684\uff0c\u8ba9\u6211\u4eec\u5f00\u59cb\u5427\uff01<\/p>\n<hr \/>\n<h2>ROC\u66f2\u7ebf\u7684\u5fc5\u8981\u6027\u9519\u8bef\u6307\u6807\u4f7f\u6211\u4eec\u80fd\u591f\u8bc4\u4f30\u548c\u9a8c\u8bc1\u6a21\u578b\u5728\u7279\u5b9a\u6570\u636e\u96c6\u4e0a\u7684\u8fd0\u884c\u60c5\u51b5\u3002<\/p>\n<p>ROC\u56fe\u662f\u5176\u4e2d\u4e00\u79cd\u9519\u8bef\u6307\u6807\u3002<\/p>\n<p>ROC\u66f2\u7ebf\uff0c\u4e5f\u88ab\u79f0\u4e3aROC AUC\u66f2\u7ebf\uff0c\u662f\u4e00\u79cd\u5206\u7c7b\u9519\u8bef\u6307\u6807\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u8861\u91cf\u4e86\u5206\u7c7b\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u7684\u529f\u80fd\u548c\u7ed3\u679c\u3002<\/p>\n<p>\u51c6\u786e\u6765\u8bf4\uff0cROC\u66f2\u7ebf\u4ee3\u8868\u6570\u503c\u7684\u6982\u7387\u66f2\u7ebf\uff0c\u800cAUC\u5219\u662f\u4e0d\u540c\u6570\u503c\/\u6807\u7b7e\u7ec4\u4e4b\u95f4\u53ef\u5206\u6027\u7684\u5ea6\u91cf\u3002\u901a\u8fc7ROC AUC\u66f2\u7ebf\uff0c\u6211\u4eec\u53ef\u4ee5\u5206\u6790\u5e76\u5f97\u51fa\u7ed3\u8bba\uff0c\u6a21\u578b\u6839\u636e\u6807\u7b7e\u6b63\u786e\u5730\u5c06\u591a\u5c11\u6570\u503c\u8fdb\u884c\u4e86\u533a\u5206\u548c\u5206\u7c7b\u3002<\/p>\n<p>AUC\u503c\u8d8a\u9ad8\uff0c\u9884\u6d4b\u503c\u7684\u5206\u7c7b\u6548\u679c\u5c31\u8d8a\u597d\u3002<\/p>\n<p>\u4ee5\u4e00\u4e2a\u6a21\u578b\u6765\u9884\u6d4b\u548c\u5206\u7c7b\u629b\u786c\u5e01\u7684\u7ed3\u679c\u662f\u201c\u6b63\u9762\u201d\u8fd8\u662f\u201c\u53cd\u9762\u201d\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u5982\u679cAUC\u5206\u6570\u9ad8\uff0c\u8868\u793a\u8be5\u6a21\u578b\u80fd\u591f\u66f4\u6709\u6548\u5730\u5c06\u201c\u6b63\u9762\u201d\u5206\u7c7b\u4e3a\u201c\u6b63\u9762\u201d\u548c\u201c\u53cd\u9762\u201d\u5206\u7c7b\u4e3a\u201c\u53cd\u9762\u201d\u3002<\/p>\n<p>\u4ece\u6280\u672f\u89d2\u5ea6\u6765\u770b\uff0cROC\u66f2\u7ebf\u662f\u6839\u636e\u6a21\u578b\u7684\u771f\u6b63\u4f8b\u7387\u548c\u5047\u6b63\u4f8b\u7387\u7ed8\u5236\u7684\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u73b0\u5728\u8bd5\u7740\u5728\u63a5\u4e0b\u6765\u7684\u90e8\u5206\u4e2d\u5b9e\u73b0ROC\u66f2\u7ebf\u7684\u6982\u5ff5\u5427\uff01<\/p>\n<hr \/>\n<h2>\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528plot()\u51fd\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528ROC\u66f2\u7ebf\u6765\u8bc4\u4f30\u673a\u5668\u5b66\u4e60\u6a21\u578b\uff0c\u5c31\u50cf\u4e4b\u524d\u8ba8\u8bba\u8fc7\u7684\u4e00\u6837\u3002\u56e0\u6b64\uff0c\u8ba9\u6211\u4eec\u5c1d\u8bd5\u5728\u903b\u8f91\u56de\u5f52\u6a21\u578b\u4e2d\u5b9e\u73b0ROC\u66f2\u7ebf\u7684\u6982\u5ff5\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u5f00\u59cb\u5427\uff01:)<\/p>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u94f6\u884c\u8d37\u6b3e\u8fdd\u7ea6\u6570\u636e\u96c6\u8fdb\u884c\u903b\u8f91\u56de\u5f52\u5efa\u6a21\u3002\u6211\u4eec\u5c06\u4f7f\u7528\u6765\u81ea\u201cpROC\u201d\u5e93\u7684plot()\u51fd\u6570\u7ed8\u5236ROC\u66f2\u7ebf\u3002\u4f60\u53ef\u4ee5\u5728\u8fd9\u91cc\u627e\u5230\u6570\u636e\u96c6\uff01<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u6700\u521d\uff0c\u6211\u4eec\u4f7f\u7528read.csv()\u51fd\u6570\u5c06\u6570\u636e\u96c6\u52a0\u8f7d\u5230\u73af\u5883\u4e2d\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5728\u5efa\u6a21\u4e4b\u524d\uff0c\u6570\u636e\u96c6\u7684\u62c6\u5206\u662f\u4e00\u4e2a\u5173\u952e\u6b65\u9aa4\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u4f7f\u7528R\u6587\u6863\u4e2d\u7684createDataPartition()\u51fd\u6570\u5c06\u6570\u636e\u96c6\u5206\u4e3a\u8bad\u7ec3\u6570\u636e\u548c\u6d4b\u8bd5\u6570\u636e\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u6211\u4eec\u8bbe\u7f6e\u4e86\u4e00\u4e9b\u9519\u8bef\u6307\u6807\u6765\u8bc4\u4f30\u6a21\u578b\u7684\u8fd0\u884c\u60c5\u51b5\uff0c\u5305\u62ec\u7cbe\u786e\u5ea6\u3001\u53ec\u56de\u7387\u3001\u51c6\u786e\u5ea6\u3001F1\u5206\u6570\u3001ROC\u66f2\u7ebf\u7b49\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528R\u7684glm()\u51fd\u6570\u5728\u6570\u636e\u96c6\u4e0a\u5e94\u7528\u903b\u8f91\u56de\u5f52\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528predict()\u51fd\u6570\u5728\u6d4b\u8bd5\u6570\u636e\u4e0a\u6d4b\u8bd5\u6a21\u578b\u5e76\u83b7\u5f97\u9519\u8bef\u6307\u6807\u7684\u503c\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u6700\u540e\uff0c\u6211\u4eec\u901a\u8fc7roc()\u65b9\u6cd5\u8ba1\u7b97\u6a21\u578b\u7684roc AUC\u5206\u6570\uff0c\u5e76\u4f7f\u7528&#8217;pROC&#8217;\u5e93\u4e2d\u53ef\u7528\u7684plot()\u51fd\u6570\u7ed8\u5236\u76f8\u5e94\u7684\u56fe\u5f62\u3002<\/ol>\n<pre class=\"post-pre\"><code>rm<span class=\"token punctuation\">(<\/span>list <span class=\"token operator\">=<\/span> ls<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token comment\">#Setting the working directory<\/span>\r\nsetwd<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"D:\/Edwisor_Project - Loan_Defaulter\/\"<\/span><span class=\"token punctuation\">)<\/span>\r\ngetwd<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token comment\">#Load the dataset<\/span>\r\ndta <span class=\"token operator\">=<\/span> read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"bank-loan.csv\"<\/span><span class=\"token punctuation\">,<\/span>header<span class=\"token operator\">=<\/span><span class=\"token boolean\">TRUE<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\">### Data SAMPLING ####<\/span>\r\nlibrary<span class=\"token punctuation\">(<\/span>caret<span class=\"token punctuation\">)<\/span>\r\nset.seed<span class=\"token punctuation\">(<\/span><span class=\"token number\">101<\/span><span class=\"token punctuation\">)<\/span>\r\nsplit <span class=\"token operator\">=<\/span> createDataPartition<span class=\"token punctuation\">(<\/span>data<span class=\"token operator\">$<\/span>default<span class=\"token punctuation\">,<\/span> p <span class=\"token operator\">=<\/span> <span class=\"token number\">0.80<\/span><span class=\"token punctuation\">,<\/span> list <span class=\"token operator\">=<\/span> <span class=\"token boolean\">FALSE<\/span><span class=\"token punctuation\">)<\/span>\r\ntrain_data <span class=\"token operator\">=<\/span> data<span class=\"token punctuation\">[<\/span>split<span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">]<\/span>\r\ntest_data <span class=\"token operator\">=<\/span> data<span class=\"token punctuation\">[<\/span><span class=\"token operator\">-<\/span>split<span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">]<\/span>\r\n\r\n<span class=\"token comment\">#error metrics -- Confusion Matrix<\/span>\r\nerr_metric<span class=\"token operator\">=<\/span><span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>CM<span class=\"token punctuation\">)<\/span>\r\n<span class=\"token punctuation\">{<\/span>\r\n  TN <span class=\"token operator\">=<\/span>CM<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span>\r\n  TP <span class=\"token operator\">=<\/span>CM<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span>\r\n  FP <span class=\"token operator\">=<\/span>CM<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span>\r\n  FN <span class=\"token operator\">=<\/span>CM<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span>\r\n  precision <span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span>TP<span class=\"token punctuation\">)<\/span><span class=\"token operator\">\/<\/span><span class=\"token punctuation\">(<\/span>TP<span class=\"token operator\">+<\/span>FP<span class=\"token punctuation\">)<\/span>\r\n  recall_score <span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span>FP<span class=\"token punctuation\">)<\/span><span class=\"token operator\">\/<\/span><span class=\"token punctuation\">(<\/span>FP<span class=\"token operator\">+<\/span>TN<span class=\"token punctuation\">)<\/span>\r\n  f1_score<span class=\"token operator\">=<\/span><span class=\"token number\">2<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>precision<span class=\"token operator\">*<\/span>recall_score<span class=\"token punctuation\">)<\/span><span class=\"token operator\">\/<\/span><span class=\"token punctuation\">(<\/span>precision<span class=\"token operator\">+<\/span>recall_score<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n  accuracy_model  <span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span>TP<span class=\"token operator\">+<\/span>TN<span class=\"token punctuation\">)<\/span><span class=\"token operator\">\/<\/span><span class=\"token punctuation\">(<\/span>TP<span class=\"token operator\">+<\/span>TN<span class=\"token operator\">+<\/span>FP<span class=\"token operator\">+<\/span>FN<span class=\"token punctuation\">)<\/span>\r\n  False_positive_rate <span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span>FP<span class=\"token punctuation\">)<\/span><span class=\"token operator\">\/<\/span><span class=\"token punctuation\">(<\/span>FP<span class=\"token operator\">+<\/span>TN<span class=\"token punctuation\">)<\/span>\r\n  False_negative_rate <span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span>FN<span class=\"token punctuation\">)<\/span><span class=\"token operator\">\/<\/span><span class=\"token punctuation\">(<\/span>FN<span class=\"token operator\">+<\/span>TP<span class=\"token punctuation\">)<\/span>\r\n  print<span class=\"token punctuation\">(<\/span>paste<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Precision value of the model: \"<\/span><span class=\"token punctuation\">,<\/span>round<span class=\"token punctuation\">(<\/span>precision<span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n  print<span class=\"token punctuation\">(<\/span>paste<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Accuracy of the model: \"<\/span><span class=\"token punctuation\">,<\/span>round<span class=\"token punctuation\">(<\/span>accuracy_model<span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n  print<span class=\"token punctuation\">(<\/span>paste<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Recall value of the model: \"<\/span><span class=\"token punctuation\">,<\/span>round<span class=\"token punctuation\">(<\/span>recall_score<span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n  print<span class=\"token punctuation\">(<\/span>paste<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"False Positive rate of the model: \"<\/span><span class=\"token punctuation\">,<\/span>round<span class=\"token punctuation\">(<\/span>False_positive_rate<span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n  print<span class=\"token punctuation\">(<\/span>paste<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"False Negative rate of the model: \"<\/span><span class=\"token punctuation\">,<\/span>round<span class=\"token punctuation\">(<\/span>False_negative_rate<span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n  print<span class=\"token punctuation\">(<\/span>paste<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"f1 score of the model: \"<\/span><span class=\"token punctuation\">,<\/span>round<span class=\"token punctuation\">(<\/span>f1_score<span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token punctuation\">}<\/span>\r\n\r\n<span class=\"token comment\"># 1. Logistic regression<\/span>\r\nlogit_m <span class=\"token operator\">=<\/span>glm<span class=\"token punctuation\">(<\/span>formula <span class=\"token operator\">=<\/span> default<span class=\"token operator\">~<\/span>. <span class=\"token punctuation\">,<\/span>data <span class=\"token operator\">=<\/span>train_data <span class=\"token punctuation\">,<\/span>family<span class=\"token operator\">=<\/span><span class=\"token string\">'binomial'<\/span><span class=\"token punctuation\">)<\/span>\r\nsummary<span class=\"token punctuation\">(<\/span>logit_m<span class=\"token punctuation\">)<\/span>\r\nlogit_P <span class=\"token operator\">=<\/span> predict<span class=\"token punctuation\">(<\/span>logit_m <span class=\"token punctuation\">,<\/span> newdata <span class=\"token operator\">=<\/span> test_data<span class=\"token punctuation\">[<\/span><span class=\"token operator\">-<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token punctuation\">,<\/span>type <span class=\"token operator\">=<\/span> <span class=\"token string\">'response'<\/span> <span class=\"token punctuation\">)<\/span>\r\nlogit_P <span class=\"token operator\">&lt;-<\/span> ifelse<span class=\"token punctuation\">(<\/span>logit_P <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0.5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># Probability check<\/span>\r\nCM<span class=\"token operator\">=<\/span> table<span class=\"token punctuation\">(<\/span>test_data<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token punctuation\">,<\/span> logit_P<span class=\"token punctuation\">)<\/span>\r\nprint<span class=\"token punctuation\">(<\/span>CM<span class=\"token punctuation\">)<\/span>\r\nerr_metric<span class=\"token punctuation\">(<\/span>CM<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\">#ROC-curve using pROC library<\/span>\r\nlibrary<span class=\"token punctuation\">(<\/span>pROC<span class=\"token punctuation\">)<\/span>\r\nroc_score<span class=\"token operator\">=<\/span>roc<span class=\"token punctuation\">(<\/span>test_data<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> logit_P<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">#AUC score<\/span>\r\nplot<span class=\"token punctuation\">(<\/span>roc_score <span class=\"token punctuation\">,<\/span>main <span class=\"token operator\">=<\/span><span class=\"token string\">\"ROC curve -- Logistic Regression \"<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u8f93\u51fa: \u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9\uff0c\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u56fd\u6bcd\u8bed\u8fdb\u884c\u91ca\u4e49\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656479f8a4b2f92e6c72b787\/21-0.png\" alt=\"ROC Curve Logistic Regression 1\" \/><\/p>\n<hr \/>\n<h2>\u7b2c\u4e8c\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528roc.plot()\u51fd\u6570<\/h2>\n<p>R\u7f16\u7a0b\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u53e6\u4e00\u4e2a\u540d\u4e3a&#8221;verification&#8221;\u7684\u5e93\uff0c\u7528\u4e8e\u7ed8\u5236\u6a21\u578b\u7684ROC-AUC\u66f2\u7ebf\u3002<\/p>\n<p>\u4e3a\u4e86\u4f7f\u7528\u8fd9\u4e2a\u529f\u80fd\uff0c\u6211\u4eec\u9700\u8981\u5c06&#8221;\u9a8c\u8bc1&#8221;\u5e93\u5b89\u88c5\u548c\u5bfc\u5165\u5230\u6211\u4eec\u7684\u73af\u5883\u4e2d\u3002<\/p>\n<p>\u5b8c\u6210\u8fd9\u4e2a\u6b65\u9aa4\u540e\uff0c\u6211\u4eec\u4f7f\u7528roc.plot()\u51fd\u6570\u7ed8\u5236\u6570\u636e\uff0c\u4ee5\u6e05\u6670\u8bc4\u4f30\u6570\u636e\u503c\u4e4b\u95f4\u7684&#8221;\u654f\u611f\u6027&#8221;\u548c&#8221;\u7279\u5f02\u6027&#8221;\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code># \u5b89\u88c5verification\u5305\r\ninstall.packages(\"verification\")\r\n# \u52a0\u8f7dverification\u5e93\r\nlibrary(verification)\r\n# \u521b\u5efa\u6570\u636e\r\nx <- c(0, 0, 0, 1, 1, 1)\r\ny <- c(.7, .7, 0, 1, 5, .6)\r\ndata <- data.frame(x, y)\r\n# \u4e3a\u6570\u636e\u5217\u547d\u540d\r\nnames(data) <- c(\"yes\", \"no\")\r\n# \u7ed8\u5236ROC\u66f2\u7ebf\r\nroc.plot(data$yes, data$no)\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\u4f7f\u7528Verification\u5305\u7ed8\u5236ROC\u66f2\u7ebf\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656479f8a4b2f92e6c72b787\/29-0.png\" alt=\"\u4f7f\u7528Verification\u5305\u7ed8\u5236ROC\u66f2\u7ebf\" \/><\/div>\n<hr \/>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u901a\u8fc7\u8fd9\u4e2a\u8bdd\u9898\uff0c\u6211\u4eec\u5df2\u7ecf\u5230\u8fbe\u4e86\u7ec8\u70b9\u3002\u5982\u679c\u4f60\u6709\u4efb\u4f55\u95ee\u9898\uff0c\u8bf7\u968f\u65f6\u5728\u4e0b\u65b9\u8bc4\u8bba\u3002<\/p>\n<p>\u5c1d\u8bd5\u5c06ROC\u66f2\u7ebf\u6982\u5ff5\u5e94\u7528\u5230\u5176\u4ed6\u673a\u5668\u5b66\u4e60\u6a21\u578b\u4e2d\uff0c\u5e76\u5728\u8bc4\u8bba\u533a\u544a\u8bc9\u6211\u4eec\u4f60\u5bf9\u6b64\u7684\u7406\u89e3\u3002<\/p>\n<p>\u4e00\u76f4\u4fdd\u6301\u5173\u6ce8\uff0c\u5feb\u4e50\u5b66\u4e60\uff01 \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb6\u597d\uff01\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4f1a\u8be6\u7ec6\u4e86\u89e3\u673a\u5668\u5b66\u4e60\u7684\u4e00\u4e2a\u91cd\u8981\u9519\u8bef\u6307\u6807\u2014\u2014\u5728R\u7f16\u7a0b\u4e2d\u7ed8\u5236ROC\u66f2\u7ebf\u3002 \u597d\u7684\uff0c\u8ba9\u6211\u4eec\u5f00 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1768,586,438,370,809],"class_list":["post-627","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-roc","tag-r","tag-438","tag-370","tag-809"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R\u8bed\u8a00\u7ed8\u5236ROC\u66f2\u7ebf\u5b8c\u5168\u6307\u5357\uff1a\u4ece\u5165\u95e8\u5230\u7cbe\u901a - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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