{"id":148,"date":"2025-12-01T14:04:37","date_gmt":"2025-12-01T06:04:37","guid":{"rendered":"https:\/\/snakesleep.work\/?p=148"},"modified":"2025-12-01T14:04:38","modified_gmt":"2025-12-01T06:04:38","slug":"%e8%af%84%e4%bc%b0%e6%8c%87%e6%a0%87","status":"publish","type":"post","link":"https:\/\/snakesleep.work\/?p=148","title":{"rendered":"\u8bc4\u4f30\u6307\u6807"},"content":{"rendered":"\n

1.\u00a0\u51c6\u786e\u7387\u00a0(Accuracy)<\/strong><\/h3>\n\n\n\n

\u5b9a\u4e49<\/strong>\uff1a\u51c6\u786e\u7387\u662f\u6307\u6a21\u578b\u9884\u6d4b\u6b63\u786e\u7684\u6837\u672c\u5360\u603b\u6837\u672c\u7684\u6bd4\u4f8b\u3002<\/p>\n\n\n\n

\u516c\u5f0f<\/strong>\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
    \n
  • TP\u00a0(True Positive)<\/strong>\uff1a\u771f\u6b63\u4f8b\uff0c\u6b63\u786e\u9884\u6d4b\u4e3a\u6b63\u7c7b\u7684\u6837\u672c\u6570\u91cf\u3002<\/li>\n\n\n\n
  • TN\u00a0(True Negative)<\/strong>\uff1a\u771f\u8d1f\u4f8b\uff0c\u6b63\u786e\u9884\u6d4b\u4e3a\u8d1f\u7c7b\u7684\u6837\u672c\u6570\u91cf\u3002<\/li>\n\n\n\n
  • FP\u00a0(False Positive)<\/strong>\uff1a\u5047\u6b63\u4f8b\uff0c\u9519\u8bef\u9884\u6d4b\u4e3a\u6b63\u7c7b\u7684\u6837\u672c\u6570\u91cf\u3002<\/li>\n\n\n\n
  • FN\u00a0(False Negative)<\/strong>\uff1a\u5047\u8d1f\u4f8b\uff0c\u9519\u8bef\u9884\u6d4b\u4e3a\u8d1f\u7c7b\u7684\u6837\u672c\u6570\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n

    \u89e3\u91ca<\/strong>\uff1a\u51c6\u786e\u7387\u662f\u4e00\u4e2a\u5e38\u7528\u7684\u6027\u80fd\u6307\u6807\uff0c\u4f46\u5728\u7c7b\u522b\u4e0d\u5e73\u8861\u7684\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u4ea7\u751f\u8bef\u5bfc\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5927\u591a\u6570\u6837\u672c\u662f\u8d1f\u7c7b\uff0c\u6a21\u578b\u53ea\u9700\u7b80\u5355\u5730\u9884\u6d4b\u6240\u6709\u6837\u672c\u4e3a\u8d1f\u7c7b\u5373\u53ef\u83b7\u5f97\u9ad8\u51c6\u786e\u7387\u3002<\/p>\n\n\n\n

    2.\u00a0\u7cbe\u786e\u7387\u00a0(Precision)<\/strong><\/h3>\n\n\n\n

    \u5b9a\u4e49<\/strong>\uff1a\u7cbe\u786e\u7387\u662f\u6307\u6a21\u578b\u9884\u6d4b\u4e3a\u6b63\u7c7b\u7684\u6837\u672c\u4e2d\uff0c\u5b9e\u9645\u4e3a\u6b63\u7c7b\u7684\u6bd4\u4f8b\u3002<\/p>\n\n\n\n

    \u516c\u5f0f<\/strong>\uff1a<\/p>\n\n\n\n

    \"\"<\/div><\/figure>\n\n\n\n

    \u89e3\u91ca<\/strong>\uff1a\u7cbe\u786e\u7387\u8861\u91cf\u7684\u662f\u6a21\u578b\u5728\u9884\u6d4b\u4e3a\u6b63\u7c7b\u65f6\u7684\u51c6\u786e\u6027\u3002\u5728\u67d0\u4e9b\u5e94\u7528\u4e2d\uff08\u5982\u75be\u75c5\u7b5b\u67e5\uff09\uff0c\u6211\u4eec\u5e0c\u671b\u5c3d\u91cf\u51cf\u5c11\u5047\u9633\u6027\uff0c\u56e0\u4e3a\u5047\u9633\u6027\u53ef\u80fd\u5bfc\u81f4\u4e0d\u5fc5\u8981\u7684\u540e\u7eed\u68c0\u67e5\u6216\u6cbb\u7597\u3002<\/p>\n\n\n\n

    3.\u00a0\u53ec\u56de\u7387\u00a0(Recall)<\/strong><\/h3>\n\n\n\n

    \u5b9a\u4e49<\/strong>\uff1a\u53ec\u56de\u7387\u662f\u6307\u5b9e\u9645\u4e3a\u6b63\u7c7b\u7684\u6837\u672c\u4e2d\uff0c\u88ab\u6a21\u578b\u6b63\u786e\u9884\u6d4b\u4e3a\u6b63\u7c7b\u7684\u6bd4\u4f8b\u3002<\/p>\n\n\n\n

    \u516c\u5f0f<\/strong>\uff1a<\/p>\n\n\n\n

    \"\"<\/div><\/figure>\n\n\n\n

    \u89e3\u91ca<\/strong>\uff1a\u53ec\u56de\u7387\u8861\u91cf\u7684\u662f\u6a21\u578b\u5bf9\u6b63\u7c7b\u6837\u672c\u7684\u8bc6\u522b\u80fd\u529b\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff08\u5982\u764c\u75c7\u68c0\u6d4b\uff09\uff0c\u6211\u4eec\u5e0c\u671b\u5c3d\u91cf\u51cf\u5c11\u5047\u9634\u6027\uff0c\u56e0\u4e3a\u6f0f\u6389\u4e00\u4e2a\u771f\u5b9e\u7684\u9633\u6027\u6837\u672c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e25\u91cd\u540e\u679c\u3002<\/p>\n\n\n\n

    4. F1 \u503c<\/strong><\/h3>\n\n\n\n

    \u5b9a\u4e49\uff1a<\/strong>F1 \u503c\uff08F1-score\uff09\u662f\u5206\u7c7b\u95ee\u9898\u4e2d\u7684\u4e00\u79cd\u7efc\u5408\u8bc4\u4ef7\u6307\u6807\uff0c\u5b83\u662f\u7cbe\u786e\u7387\u548c\u53ec\u56de\u7387\u7684\u52a0\u6743\u5e73\u5747\uff0c\u7528\u4e8e\u540c\u65f6\u8003\u8651\u9884\u6d4b\u51fa\u7684\u6b63\u4f8b\u548c\u5b9e\u9645\u6b63\u4f8b\u7684\u6570\u91cf\uff0c\u5176\u4e2d F1 \u4e5f\u79f0\u4e3a\u7cbe\u786e\u7387\u548c\u53ec\u56de\u7387\u7684\u8c03\u548c\u5747\u503c\u3002<\/p>\n\n\n\n

    \u516c\u5f0f\uff1a<\/strong><\/p>\n\n\n\n

    \"\"<\/div><\/figure>\n\n\n\n

    \u89e3\u91ca\uff1a<\/strong>\u5355\u72ec\u7528\u7cbe\u786e\u7387\u6216\u8005\u53ec\u56de\u7387\u4e0d\u80fd\u5f88\u597d\u7684\u8bc4\u4f30\u6a21\u578b\u597d\u574f\u3002\u5f53 P \u548c R \u540c\u65f6\u4e3a 1 \u65f6\uff0cF1=1\u3002\u5f53\u6709\u4e00\u4e2a\u5f88\u5927\uff0c\u53e6\u4e00\u4e2a\u5f88\u5c0f\u7684\u65f6\u5019\uff0c\u6bd4\u5982 P=1\uff0cR~0\uff0c\u6b64\u65f6 F1~0\u3002\u5206\u5b50 2PR \u7684 2 \u5b8c\u5168\u4e86\u4e3a\u4e86\u4f7f\u6700\u7ec8\u53d6\u503c\u5728 0-1 \u4e4b\u95f4\uff0c\u8fdb\u884c\u533a\u95f4\u653e\u5927\uff0c\u65e0\u5b9e\u9645\u610f\u4e49\u3002<\/p>\n\n\n\n

    5. \u7279\u5f02\u5ea6\uff08Specificity\uff09<\/h3>\n\n\n\n
      \n
    • \u5b9a\u4e49<\/strong>\uff1a\u6a21\u578b\u9884\u6d4b\u4e3a\u8d1f\u7c7b\u4e14\u6b63\u786e\u7684\u6837\u672c\u6570\u5360\u5b9e\u9645\u4e3a\u8d1f\u7c7b\u7684\u6837\u672c\u603b\u6570\u7684\u6bd4\u4f8b\u3002<\/li>\n\n\n\n
    • \u516c\u5f0f<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
      \"\"<\/div><\/figure>\n\n\n\n
        \n
      • \u9002\u7528\u573a\u666f<\/strong>\uff1a\u5173\u6ce8\u8d1f\u7c7b\u9884\u6d4b\u51c6\u786e\u6027\u65f6\u3002<\/li>\n<\/ul>\n\n\n\n

        6. ROC \u66f2\u7ebf\u4e0b\u9762\u79ef\uff08AUC-ROC\uff09<\/h3>\n\n\n\n
          \n
        • \u5b9a\u4e49<\/strong>\uff1a\u63a5\u6536\u8005\u64cd\u4f5c\u7279\u5f81\u66f2\u7ebf\uff08ROC Curve\uff09\u4e0b\u7684\u9762\u79ef\u3002<\/li>\n\n\n\n
        • \u89e3\u91ca<\/strong>\uff1a\u8861\u91cf\u6a21\u578b\u5728\u4e0d\u540c\u9608\u503c\u4e0b\u5bf9\u6b63\u8d1f\u7c7b\u7684\u533a\u5206\u80fd\u529b\u3002<\/li>\n\n\n\n
        • \u9002\u7528\u573a\u666f<\/strong>\uff1a\u6570\u636e\u5206\u5e03\u5747\u8861\u6216\u4e0d\u5747\u8861\u65f6\u3002<\/li>\n<\/ul>\n\n\n\n

          8. \u9a6c\u4fee\u65af\u76f8\u5173\u7cfb\u6570\uff08MCC\uff09<\/h3>\n\n\n\n
            \n
          • \u5b9a\u4e49<\/strong>\uff1a\u8861\u91cf\u4e8c\u5206\u7c7b\u6a21\u578b\u8d28\u91cf\u7684\u6307\u6807\uff0c\u8003\u8651\u4e86\u6240\u6709\u6df7\u6dc6\u77e9\u9635\u5143\u7d20\u3002<\/li>\n\n\n\n
          • \u516c\u5f0f<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
            \"\"<\/div><\/figure>\n\n\n\n
              \n
            • \u9002\u7528\u573a\u666f<\/strong>\uff1a\u6570\u636e\u5206\u5e03\u4e0d\u5747\u8861\u65f6\u3002<\/li>\n<\/ul>\n\n\n\n

              9. PR \u66f2\u7ebf\u4e0b\u9762\u79ef-AUPRC\uff08Area Under the Precision-Recall Curve\uff09<\/h3>\n\n\n\n

              \u6b63\u7c7b\u5f88\u5c11\u65f6<\/strong>\uff0cROC \u5bb9\u6613\u201c\u4e50\u89c2\u201d\uff0cAUPRC \u66f4\u4e25\u683c\uff1a\u5b83\u628a\u201c\u53ec\u56de\u7387\u201d\u5f53\u6a2a\u8f74\uff0c\u201c\u7cbe\u786e\u7387\u201d\u5f53\u7eb5\u8f74\uff0c\u66f2\u7ebf\u4e0b\u7684\u9762\u79ef\u8d8a\u5927\uff0c\u6a21\u578b\u627e\u5c11\u6570\u7c7b\u8d8a\u51c6<\/strong>\u3002<\/p>\n\n\n\n

              from sklearn.metrics import average_precision_score\nauprc = average_precision_score(y_true, y_score)   # \u76f4\u63a5\u7ed9\u51fa AUPRC<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
              1.\u00a0\u51c6\u786e\u7387\u00a0(Accuracy) \u5b9a\u4e49\uff1a\u51c6\u786e\u7387\u662f\u6307\u6a21\u578b\u9884\u6d4b\u6b63\u786e\u7684\u6837\u672c\u5360\u603b\u6837\u672c\u7684\u6bd4\u4f8b\u3002 \u516c\u5f0f\uff1a \u89e3\u91ca\uff1a\u51c6\u786e\u7387\u662f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[19],"class_list":["post-148","post","type-post","status-publish","format-standard","hentry","category-20","tag-19"],"_links":{"self":[{"href":"https:\/\/snakesleep.work\/index.php?rest_route=\/wp\/v2\/posts\/148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/snakesleep.work\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/snakesleep.work\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/snakesleep.work\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/snakesleep.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=148"}],"version-history":[{"count":5,"href":"https:\/\/snakesleep.work\/index.php?rest_route=\/wp\/v2\/posts\/148\/revisions"}],"predecessor-version":[{"id":159,"href":"https:\/\/snakesleep.work\/index.php?rest_route=\/wp\/v2\/posts\/148\/revisions\/159"}],"wp:attachment":[{"href":"https:\/\/snakesleep.work\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/snakesleep.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/snakesleep.work\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}