{"id":229,"date":"2023-08-08T10:23:40","date_gmt":"2023-08-08T02:23:40","guid":{"rendered":"http:\/\/106.52.213.145:21080\/?p=229"},"modified":"2023-11-15T11:37:53","modified_gmt":"2023-11-15T03:37:53","slug":"xuexibijijiqixuexigezhongpingjiazhibiao","status":"publish","type":"post","link":"https:\/\/apifj.com\/index.php\/2023\/08\/08\/xuexibijijiqixuexigezhongpingjiazhibiao\/","title":{"rendered":"[\u5b66\u4e60\u7b14\u8bb0]\u673a\u5668\u5b66\u4e60\u5404\u79cd\u8bc4\u4ef7\u6307\u6807"},"content":{"rendered":"<h1>\u673a\u5668\u5b66\u4e60\u5404\u79cd\u8bc4\u4ef7\u6307\u6807<\/h1>\n<h2>1. \u6df7\u6dc6\u77e9\u9635<\/h2>\n<p>\u6df7\u6dc6\u77e9\u9635\uff08Confusion Matrix\uff09\u662f\u5728\u673a\u5668\u5b66\u4e60\u548c\u7edf\u8ba1\u5b66\u4e2d\u7528\u4e8e\u8bc4\u4f30\u5206\u7c7b\u6a21\u578b\u6027\u80fd\u7684\u4e00\u79cd\u8868\u683c\u5f62\u5f0f\u7684\u5de5\u5177\u3002\u5b83\u63d0\u4f9b\u4e86\u5bf9\u6a21\u578b\u9884\u6d4b\u7ed3\u679c\u7684\u8be6\u7ec6\u5206\u6790\uff0c\u53ef\u4ee5\u5c55\u793a\u6a21\u578b\u5728\u4e0d\u540c\u7c7b\u522b\u4e0a\u7684\u5206\u7c7b\u6b63\u786e\u6027\u548c\u9519\u8bef\u6027\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461221036.png\" alt=\"file\" \/><\/p>\n<p>\u4ed6\u7684\u5f62\u72b6\u5982\u4e0a\u56fe\u6240\u793a\uff0c\u5176\u4e2d\u9ec4\u8272\u90e8\u5206\u4e3a\u6807\u7b7e\u7684\u503c\uff0c\u7d2b\u8272\u90e8\u5206\u4e3a\u6a21\u578b\u9884\u6d4b\u7684\u503c\uff0c\u4e2d\u95f4\u6709TP\u3001FP\u3001FN\u3001TN\u662f\u5bf9\u5e94\u7684\u6570\u91cf\u3002\u90a3\u4e48TP\u3001FP\u3001FN\u3001TN\u5206\u522b\u662f\u4ec0\u4e48\u5462\uff1f\u6211\u4eec\u901a\u8fc7\u4e0b\u56fe\u89e3\u6790\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461234267.png\" alt=\"file\" \/><\/p>\n<p>\u901a\u8fc7\u8fd9\u4e2a\u4f8b\u5b50\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5217\u51fa\u6240\u6709\u7684\u60c5\u51b5\uff0c\u5176\u4e2d\u540e\u8005\u662f\u5bf9\u4e8e\u9884\u6d4b\u7ed3\u679c\u6765\u8bb2\u7684\uff1a<\/p>\n<ul>\n<li>TP: True Positive\uff08\u771f\u7684\u6b63\u4f8b\uff09\uff1a\u6a21\u578b\u5c06\u6b63\u4f8b\u9884\u6d4b\u4e3a\u6b63\u4f8b\u7684\u6570\u91cf\uff0c\u771f\u7684\u6b63\u4f8b\u7684\u6570\u91cf\u3002<\/li>\n<li>FN: False Negative\uff08\u5047\u7684\u53cd\u4f8b\uff09\uff1a\u6a21\u578b\u5c06\u6b63\u4f8b\u9884\u6d4b\u4e3a\u53cd\u4f8b\u7684\u6570\u91cf\uff0c\u5047\u7684\u53cd\u4f8b\u7684\u6570\u91cf\u3002<\/li>\n<li>FP:  False Positive\uff08\u5047\u7684\u6b63\u4f8b\uff09\uff1a\u6a21\u578b\u5c06\u53cd\u4f8b\u9884\u6d4b\u4e3a\u6b63\u4f8b\u7684\u6570\u91cf\uff0c\u5047\u7684\u6b63\u4f8b\u7684\u6570\u91cf\u3002<\/li>\n<li>TN: True Negative\uff08\u771f\u7684\u53cd\u4f8b\uff09\uff1a\u6a21\u578b\u5c06\u53cd\u4f8b\u9884\u6d4b\u4e3a\u53cd\u4f8b\u7684\u6570\u91cf\uff0c\u771f\u7684\u53cd\u4f8b\u7684\u6570\u91cf\u3002<\/li>\n<\/ul>\n<p>\u6211\u4eec\u5bf9\u8fd9\u4e2a\u77e9\u9635\u5206\u533a\u5757\u8ba8\u8bba\uff0c\u67e5\u770b\u5404\u4e2a\u533a\u5757\u7684\u610f\u4e49\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461248300.png\" alt=\"file\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461264511.png\" alt=\"file\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461279179.png\" alt=\"file\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461287275.png\" alt=\"file\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461297064.png\" alt=\"file\" \/><br \/>\n<img decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/08\/EPC-1.png\" alt=\"\" \/><\/p>\n<h2>2.Precision(\u7cbe\u786e\u5ea6)<\/h2>\n<p>\u6a21\u578b\u9884\u6d4b\u4e3a\u6b63\u4f8b\u7684\u6837\u672c\u4e2d\u771f\u6b63\u4e3a\u6b63\u4f8b\u7684\u6bd4\u4f8b\uff0c\u53cd\u6620\u7684\u662f\u5728\u6240\u6709\u68c0\u67e5\u51fa\u6765\u9633\u6027\u7684\u6837\u672c\u4e2d\uff0c\u6b63\u786e\u7684\u6bd4\u4f8b\u662f\u591a\u5c11\u3002<\/p>\n<pre><code class=\"language-katex\">\nPrecison=\\frac{\u9884\u6d4b\u4e3a\u6b63\u4f8b}{\u9884\u6d4b\u4e2d\u6240\u6709\u7684\u6b63\u4f8b}=\\frac{TP}{TP+FP}\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461341377.png\" alt=\"file\" \/><\/p>\n<h2>3. Recall(\u53ec\u56de\u7387)<\/h2>\n<p>Recall\u8861\u91cf\u4e86\u6a21\u578b\u6b63\u786e\u8bc6\u522b\u51fa\u7684\u6b63\u6837\u672c\uff08\u771f\u9633\u6027\uff09\u5728\u6240\u6709\u5b9e\u9645\u6b63\u6837\u672c\u4e2d\u7684\u6bd4\u4f8b\u3002<\/p>\n<pre><code class=\"language-katex\">\nRecall=\\frac{\u9884\u6d4b\u4e3a\u6b63\u4f8b}{\u6807\u7b7e\u4e2d\u6240\u6709\u7684\u6b63\u4f8b\u5b50}=\\frac{TP}{TP+FN}\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461352791.png\" alt=\"file\" \/><\/p>\n<h2>4. Accuracy(\u51c6\u786e\u7387)<\/h2>\n<p>\u5b83\u8868\u793a\u5728\u6240\u6709\u6837\u672c\u4e2d\uff0c\u5206\u7c7b\u6a21\u578b\u6b63\u786e\u9884\u6d4b\u7684\u6837\u672c\u6570\u5360\u603b\u6837\u672c\u6570\u7684\u6bd4\u4f8b\u3002<\/p>\n<pre><code class=\"language-katex\">\nAcc = \\frac{\u6b63\u786e\u9884\u6d4b\u6570\u91cf}{\u6240\u6709\u6837\u672c\u6570\u91cf}=\\frac{TP+TN}{TP+FP+FN+TN}\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461366860.png\" alt=\"file\" \/><\/p>\n<h2>5.TPR\/FNR:<\/h2>\n<p>TP(\u6b63\u786e\u9884\u6d4b\u4e3a\u6b63\u4f8b)\u6216\u8005FN(\u6b63\u4f8b\u9519\u8bef\u9884\u6d4b\u4e3a\u8d1f\u4f8b)\u5206\u522b\u5360\u6807\u7b7e\u503c\u7684\u6bd4\u4f8b<\/p>\n<pre><code class=\"language-katex\">\nTPR=\\frac{\u6b63\u786e\u9884\u6d4b\u7684\u6b63\u4f8b\u6570\u91cf}{\u6807\u7b7e\u7684\u6b63\u4f8b\u6570\u91cf}=\\frac{TP}{TP+FN}\\\\\nFNR=\\frac{\u9519\u8bef\u9884\u6d4b\u7684\u6b63\u4f8b\u6570\u91cf}{\u6807\u7b7e\u7684\u6b63\u4f8b\u6570\u91cf}=\\frac{FN}{TP+FN}=1-TPR\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461388241.png\" alt=\"file\" \/><br \/>\n<img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461395904.png\" alt=\"file\" \/><\/p>\n<h2>6. TNR\/FPR:<\/h2>\n<p>TN(\u6b63\u786e\u9884\u6d4b\u4e3a\u8d1f\u4f8b)\u6216\u8005FP(\u8d1f\u4f8b\u9519\u8bef\u9884\u6d4b\u4e3a\u6b63\u4f8b)\u5206\u522b\u5360\u6807\u7b7e\u503c\u7684\u6bd4\u4f8b<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461405144.png\" alt=\"file\" \/><br \/>\n<img decoding=\"async\" src=\"http:\/\/106.52.213.145:21080\/wp-content\/uploads\/2023\/08\/image-1691461412452.png\" alt=\"file\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u673a\u5668\u5b66\u4e60\u5404\u79cd\u8bc4\u4ef7\u6307\u6807 1. \u6df7\u6dc6\u77e9\u9635 \u6df7\u6dc6\u77e9\u9635\uff08Confusion Matrix\uff09\u662f\u5728\u673a\u5668\u5b66\u4e60\u548c\u7edf\u8ba1\u5b66\u4e2d\u7528\u4e8e\u8bc4&#8230; &raquo; <a class=\"read-more-link\" href=\"https:\/\/apifj.com\/index.php\/2023\/08\/08\/xuexibijijiqixuexigezhongpingjiazhibiao\/\">\u9605\u8bfb\u5168\u6587<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-229","post","type-post","status-publish","format-standard","hentry","category-dl"],"_links":{"self":[{"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/posts\/229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/comments?post=229"}],"version-history":[{"count":8,"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/posts\/229\/revisions"}],"predecessor-version":[{"id":314,"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/posts\/229\/revisions\/314"}],"wp:attachment":[{"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/media?parent=229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/categories?post=229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/apifj.com\/index.php\/wp-json\/wp\/v2\/tags?post=229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}