{"id":188123,"date":"2024-05-09T16:36:22","date_gmt":"2024-05-09T08:36:22","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/188123.html"},"modified":"2024-05-09T16:36:26","modified_gmt":"2024-05-09T08:36:26","slug":"%e5%9c%a8%e6%9c%ba%e5%99%a8%e5%ad%a6%e4%b9%a0%e9%aa%8c%e8%af%81%e8%81%9a%e7%b1%bb%e7%bb%93%e6%9e%9c%e6%97%b6%ef%bc%8c%e4%b8%ba%e4%bb%80%e4%b9%88acc%e9%ab%98%e8%80%8cnmi%e5%be%88%e4%bd%8e","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/188123.html","title":{"rendered":"\u5728\u673a\u5668\u5b66\u4e60\u9a8c\u8bc1\u805a\u7c7b\u7ed3\u679c\u65f6\uff0c\u4e3a\u4ec0\u4e48ACC\u9ad8\u800cNMI\u5f88\u4f4e"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26094337\/1f4642bd-2ed8-495d-becb-cdda0891decc.webp\" alt=\"\u5728\u673a\u5668\u5b66\u4e60\u9a8c\u8bc1\u805a\u7c7b\u7ed3\u679c\u65f6\uff0c\u4e3a\u4ec0\u4e48ACC\u9ad8\u800cNMI\u5f88\u4f4e\" \/><\/p>\n<p><p>\u5728<a href=\"https:\/\/docs.pingcode.com\/ask\/59192.html\" target=\"_blank\">\u673a\u5668\u5b66\u4e60<\/a>\u9a8c\u8bc1\u805a\u7c7b\u7ed3\u679c\u65f6\uff0cACC\uff08Accuracy\uff09\u9ad8\u800cNMI\uff08Normalized Mutual Information\uff09\u5f88\u4f4e\u610f\u5473\u7740\u5c3d\u7ba1\u805a\u7c7b\u7ed3\u679c\u5728\u5c06\u6570\u636e\u5206\u5230\u6b63\u786e\u7684\u7fa4\u7ec4\u65b9\u9762\u8868\u73b0\u826f\u597d\uff0c\u5374\u6ca1\u6709\u5f88\u597d\u5730\u6355\u6349\u5230\u6570\u636e\u7684\u771f\u5b9e\u7ed3\u6784\u3002<strong>ACC\u9ad8<\/strong> \u8868\u793a\u5927\u90e8\u5206\u6570\u636e\u70b9\u88ab\u51c6\u786e\u5206\u81f3\u5176\u771f\u5b9e\u7684\u7fa4\u7ec4\uff0c\u800c <strong>NMI\u5f88\u4f4e<\/strong> \u5219\u6697\u793a\u5728\u5206\u7fa4\u8fc7\u7a0b\u4e2d\uff0c\u805a\u7c7b\u6240\u5f97\u5230\u7684\u4fe1\u606f\u91cf\u4e0e\u771f\u5b9e\u6807\u7b7e\u7684\u4fe1\u606f\u91cf\u5339\u914d\u7a0b\u5ea6\u4e0d\u9ad8\uff0c\u5373\u805a\u7c7b\u7ed3\u679c\u6ca1\u6709\u5f88\u597d\u5730\u53cd\u6620\u6570\u636e\u96c6\u4e2d\u7684\u771f\u5b9e\u5206\u5e03\u7279\u5f81\u3002<\/p>\n<\/p>\n<p><p>NMI\u662f\u8861\u91cf\u805a\u7c7b\u7ed3\u679c\u4e0e\u771f\u5b9e\u7ed3\u679c\u4e4b\u95f4\u76f8\u4e92\u4fe1\u606f\u7684\u6807\u51c6\u5316\u6307\u6807\uff0c\u7528\u4e8e\u8bc4\u4f30\u805a\u7c7b\u6548\u679c\u3002NMI\u8f83\u4f4e\u53ef\u80fd\u662f\u7531\u4e8e\u805a\u7c7b\u4ea7\u751f\u7684\u5f88\u591a\u7c07\u4e0e\u771f\u5b9e\u7c7b\u522b\u6ca1\u6709\u76f4\u63a5\u5bf9\u5e94\uff0c\u6216\u8005\u805a\u7c7b\u7b97\u6cd5\u6355\u6349\u5230\u7684\u4fe1\u606f\u8fdc\u8fdc\u4f4e\u4e8e\u771f\u5b9e\u7c7b\u522b\u7684\u4fe1\u606f\u590d\u6742\u5ea6\u3002\u8fd9\u79cd\u60c5\u51b5\u53ef\u80fd\u51fa\u73b0\u5728\u805a\u7c7b\u7b97\u6cd5\u6b20\u62df\u5408\uff0c\u5bf9\u6570\u636e\u5185\u5728\u7ed3\u6784\u7684\u7406\u89e3\u4e0d\u8db3\u6216\u8005\u662f\u7c7b\u522b\u95f4\u5b58\u5728\u8f83\u5927\u7684\u5dee\u5f02\uff0c\u4f46\u8fd9\u4e9b\u5dee\u5f02\u5e76\u672a\u88ab\u7b97\u6cd5\u6355\u6349\u5230\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001ACC \u548c NMI \u7684\u5b9a\u4e49\u4e0e\u533a\u522b<\/h3>\n<\/p>\n<p><h4>ACC\uff08Accuracy\uff09<\/h4>\n<\/p>\n<p><p>\u7cbe\u786e\u5ea6\u662f\u6700\u76f4\u89c2\u7684\u6027\u80fd\u5ea6\u91cf\uff0c\u5b83\u8868\u793a\u6a21\u578b\u6b63\u786e\u5206\u7c7b\u7684\u6837\u672c\u6570\u5360\u603b\u6837\u672c\u6570\u7684\u6bd4\u4f8b\u3002\u5728\u805a\u7c7b\u4e0a\u4e0b\u6587\u4e2d\uff0c\u7cbe\u786e\u5ea6\u5e38\u5e38\u901a\u8fc7\u5c06\u805a\u7c7b\u7ed3\u679c\u7684\u6807\u7b7e\u4e0e\u771f\u5b9e\u6807\u7b7e\u8fdb\u884c\u6700\u4f73\u5339\u914d\u540e\u8ba1\u7b97\u3002<\/p>\n<\/p>\n<p><h4>NMI\uff08Normalized Mutual Information\uff09<\/h4>\n<\/p>\n<p><p>\u5f52\u4e00\u5316\u4e92\u4fe1\u606f\u662f\u4ece\u4fe1\u606f\u8bba\u4e2d\u501f\u9274\u7684\u4e00\u4e2a\u6982\u5ff5\uff0c\u7528\u4e8e\u8861\u91cf\u4e24\u4e2a\u6807\u7b7e\u5206\u914d\u7684\u4e00\u81f4\u6027\u3002\u5b83\u662f\u771f\u5b9e\u6807\u7b7e\u548c\u805a\u7c7b\u7ed3\u679c\u4e4b\u95f4\u5171\u4eab\u7684\u4fe1\u606f\u91cf\u4e0e\u8fd9\u4e9b\u6807\u7b7e\u96c6\u5408\u5404\u81ea\u4fe1\u606f\u91cf\u7684\u671f\u671b\u7684\u51e0\u4f55\u5e73\u5747\u503c\u3002NMI\u503c\u8d8a\u9ad8\uff0c\u8868\u660e\u805a\u7c7b\u7ed3\u679c\u548c\u771f\u5b9e\u7c7b\u522b\u7684\u4e00\u81f4\u6027\u8d8a\u597d\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4e3a\u4ec0\u4e48\u53ef\u80fd\u51fa\u73b0ACC\u9ad8\u800cNMI\u4f4e<\/h3>\n<\/p>\n<p><h4>\u6570\u636e\u7684\u5206\u5e03\u7279\u6027<\/h4>\n<\/p>\n<p><p>\u5f53\u6570\u636e\u7684\u771f\u5b9e\u6807\u7b7e\u662f\u4e0d\u5747\u5300\u5206\u5e03\u65f6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u67d0\u4e9b\u7c7b\u522b\u7684\u6837\u672c\u91cf\u8fdc\u5927\u4e8e\u5176\u4ed6\u7c7b\u522b\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u805a\u7c7b\u7b97\u6cd5\u5c06\u5927\u90e8\u5206\u6837\u672c\u5212\u5206\u5230\u4e3b\u8981\u7684\u7c7b\u522b\u4e2d\uff0c\u5373\u4f7f\u5176\u4ed6\u7c7b\u522b\u7684\u6b63\u786e\u7387\u4e0d\u9ad8\uff0c\u6574\u4f53\u7684ACC\u4e5f\u53ef\u80fd\u4fdd\u6301\u5728\u4e00\u4e2a\u76f8\u5bf9\u8f83\u9ad8\u7684\u6c34\u5e73\u3002<\/p>\n<\/p>\n<p><h4>\u805a\u7c7b\u7b97\u6cd5\u7684\u9650\u5236<\/h4>\n<\/p>\n<p><p>\u67d0\u4e9b\u805a\u7c7b\u7b97\u6cd5\u53ef\u80fd\u57fa\u4e8e\u7279\u5b9a\u5047\u8bbe\u6216\u4f18\u5316\u76ee\u6807\u8bbe\u8ba1\uff0c\u4f8b\u5982K-means\u5047\u8bbe\u7c7b\u522b\u5177\u6709\u76f8\u4f3c\u7684\u65b9\u5dee\u4e14\u5f62\u72b6\u4e3a\u51f8\u5f62\u3002\u5982\u679c\u771f\u5b9e\u6570\u636e\u7ed3\u6784\u8fdd\u53cd\u8fd9\u4e9b\u5047\u8bbe\uff0c\u805a\u7c7b\u7ed3\u679c\u867d\u7136\u5728ACC\u6307\u6807\u4e0a\u8868\u73b0\u826f\u597d\uff0c\u4f46\u662f\u5728\u63ed\u793a\u6570\u636e\u7ed3\u6784\u65b9\u9762\u8868\u73b0\u4e0d\u8db3\uff0c\u4ece\u800c\u5bfc\u81f4NMI\u4f4e\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001ACC\u548cNMI\u4e0d\u4e00\u81f4\u7684\u540e\u679c<\/h3>\n<\/p>\n<p><h4>\u5bf9\u7b97\u6cd5\u8bc4\u4f30\u7684\u5f71\u54cd<\/h4>\n<\/p>\n<p><p>\u6709\u9ad8ACC\u548c\u4f4eNMI\u7684\u805a\u7c7b\u7b97\u6cd5\u53ef\u80fd\u88ab\u9519\u8bef\u5730\u8ba4\u4e3a\u662f\u6709\u6548\u7684\u3002\u8fd9\u662f\u56e0\u4e3a\u5355\u4e00\u7684\u9ad8\u7cbe\u786e\u5ea6\u7ed9\u51fa\u4e86\u4e00\u79cd\u8bef\u5bfc\uff0c\u5373\u7b97\u6cd5\u80fd\u51c6\u786e\u5730\u53cd\u6620\u6570\u636e\u7684\u5185\u5728\u7ed3\u6784\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b83\u53ef\u80fd\u6ca1\u6709\u6355\u6349\u5230\u6240\u6709\u91cd\u8981\u7684\u7279\u5f81\u3002<\/p>\n<\/p>\n<p><h4>\u5bf9\u6a21\u578b\u9009\u62e9\u7684\u5f71\u54cd<\/h4>\n<\/p>\n<p><p>\u4e0d\u540c\u7684\u6a21\u578b\u9009\u62e9\u4f9d\u636e\u53ef\u80fd\u4f1a\u5bfc\u81f4\u9009\u62e9\u4e0d\u540c\u7684\u805a\u7c7b\u7b97\u6cd5\u3002\u5982\u679c\u4e3b\u8981\u4f9d\u636eACC\u6307\u6807\uff0c\u90a3\u4e48\u53ef\u80fd\u504f\u597d\u90a3\u4e9b\u5728\u7279\u5b9a\u6570\u636e\u96c6\u4e0a\u80fd\u8fbe\u5230\u9ad8\u51c6\u786e\u5ea6\uff0c\u800c\u975e\u5168\u9762\u53cd\u6620\u6570\u636e\u7ed3\u6784\u7684\u7b97\u6cd5\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u63d0\u9ad8\u805a\u7c7b\u7ed3\u679c\u7684NMI<\/h3>\n<\/p>\n<p><h4>\u4f18\u5316\u805a\u7c7b\u7b97\u6cd5<\/h4>\n<\/p>\n<p><p>\u8c03\u6574\u548c\u4f18\u5316\u805a\u7c7b\u7b97\u6cd5\u7684\u53c2\u6570\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u53cd\u6620\u6570\u636e\u96c6\u5185\u5728\u7684\u7ed3\u6784\u548c\u5206\u5e03\u7279\u5f81\uff0c\u53ef\u80fd\u4f1a\u63d0\u5347NMI\u3002\u8fd9\u5305\u62ec\u9009\u62e9\u5408\u9002\u7684\u521d\u59cb\u5316\u65b9\u6cd5\u3001\u8c03\u6574\u8ddd\u79bb\u5ea6\u91cf\u6216\u8003\u8651\u4e0d\u540c\u7684\u805a\u7c7b\u6a21\u578b\u3002<\/p>\n<\/p>\n<p><h4>\u7279\u5f81\u9009\u62e9\u548c\u6570\u636e\u9884\u5904\u7406<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u7279\u5f81\u9009\u62e9\u548c\u6570\u636e\u9884\u5904\u7406\u6280\u672f\u964d\u4f4e\u566a\u58f0\u3001\u6392\u9664\u65e0\u5173\u7279\u5f81\uff0c\u53ef\u4ee5\u5e2e\u52a9\u805a\u7c7b\u7b97\u6cd5\u66f4\u6e05\u6670\u5730\u8bc6\u522b\u6570\u636e\u7684\u5185\u5728\u6a21\u5f0f\uff0c\u8fdb\u800c\u63d0\u9ad8NMI\u3002\u8fd9\u53ef\u80fd\u6d89\u53ca\u7279\u5f81\u7f29\u653e\u3001\u4e3b\u6210\u5206\u5206\u6790\uff08PCA\uff09\u6216\u5176\u4ed6\u964d\u7ef4\u624b\u6bb5\u3002<\/p>\n<\/p>\n<p><p>\u5728\u805a\u7c7b\u7ed3\u679c\u9a8c\u8bc1\u65f6\uff0cACC\u548cNMI\u5e94\u8be5\u7efc\u5408\u8003\u8651\uff0c\u4ee5\u83b7\u5f97\u5173\u4e8e\u805a\u7c7b\u6027\u80fd\u7684\u5168\u9762\u89c6\u89d2\u3002\u805a\u7c7b\u4e0d\u4ec5\u8981\u5c06\u6570\u636e\u51c6\u786e\u5730\u5206\u7c7b\uff0c\u66f4\u91cd\u8981\u7684\u662f\u8981\u63ed\u793a\u6570\u636e\u7684\u6f5c\u5728\u7ed3\u6784\uff0c\u800cNMI\u662f\u5728\u6b64\u65b9\u9762\u63d0\u4f9b\u6d1e\u5bdf\u7684\u5173\u952e\u6307\u6807\u3002\u4e00\u4e2a\u7406\u60f3\u7684\u805a\u7c7b\u7ed3\u679c\u5e94\u8be5\u5728ACC\u548cNMI\u4e24\u4e2a\u6307\u6807\u4e0a\u90fd\u6709\u8f83\u597d\u7684\u8868\u73b0\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u4e3a\u4ec0\u4e48\u673a\u5668\u5b66\u4e60\u4e2d\u805a\u7c7b\u7ed3\u679c\u7684ACC\u9ad8\u800cNMI\u5f88\u4f4e\uff1f<\/strong><\/p>\n<p><strong>ACC\u9ad8\u800cNMI\u4f4e\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n<p><strong>\u673a\u5668\u5b66\u4e60\u4e2d\u4e3a\u4ec0\u4e48\u805a\u7c7b\u7ed3\u679c\u7684ACC\u9ad8\u800cNMI\u4f4e\uff1f<\/strong><\/p>\n<p>\u867d\u7136\u805a\u7c7b\u7ed3\u679c\u7684ACC\u9ad8\u8868\u793a\u805a\u7c7b\u7ed3\u679c\u4e0e\u771f\u5b9e\u6807\u7b7e\u7684\u4e00\u81f4\u6027\u8f83\u9ad8\uff0c\u4f46NMI\u5f88\u4f4e\u53ef\u80fd\u662f\u7531\u4ee5\u4e0b\u539f\u56e0\u9020\u6210\u7684\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u6570\u636e\u4e0d\u5e73\u8861<\/strong>\uff1aACC\u53ea\u8003\u8651\u6837\u672c\u7684\u6b63\u786e\u5206\u7c7b\u6570\u91cf\uff0c\u800c\u4e0d\u8003\u8651\u6bcf\u4e2a\u7c7b\u522b\u5728\u6574\u4f53\u6570\u636e\u4e2d\u7684\u6bd4\u4f8b\u3002\u5f53\u67d0\u4e2a\u7c7b\u522b\u7684\u6837\u672c\u6570\u91cf\u6781\u5c11\u65f6\uff0c\u7531\u4e8e\u8be5\u7c7b\u522b\u5bf9ACC\u7684\u8d21\u732e\u8f83\u5c0f\uff0c\u53ef\u80fd\u5bfc\u81f4ACC\u9ad8\u800cNMI\u4f4e\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u566a\u58f0\u548c\u5f02\u5e38\u503c<\/strong>\uff1a\u805a\u7c7b\u7b97\u6cd5\u5bf9\u566a\u58f0\u548c\u5f02\u5e38\u503c\u6bd4\u8f83\u654f\u611f\uff0c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u70b9\u88ab\u9519\u8bef\u5730\u5206\u914d\u5230\u4e0d\u6b63\u786e\u7684\u7c07\u4e2d\u3002\u6b64\u65f6\uff0cACC\u53ef\u80fd\u4f1a\u9ad8\u4f30\u805a\u7c7b\u7b97\u6cd5\u7684\u6548\u679c\uff0c\u800cNMI\u5219\u80fd\u66f4\u597d\u5730\u53cd\u6620\u805a\u7c7b\u7ed3\u679c\u7684\u8d28\u91cf\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7c07\u7ed3\u6784\u4e0d\u4e00\u81f4<\/strong>\uff1a\u5f53\u6570\u636e\u96c6\u4e2d\u7684\u6837\u672c\u4e4b\u95f4\u6709\u590d\u6742\u4e14\u77db\u76fe\u7684\u7c7b\u522b\u5173\u7cfb\u65f6\uff0c\u805a\u7c7b\u7b97\u6cd5\u53ef\u80fd\u96be\u4ee5\u51c6\u786e\u5730\u5212\u5206\u7c07\u3002\u56e0\u6b64\uff0cACC\u53ef\u80fd\u4f1a\u9ad8\u4f30\u805a\u7c7b\u7ed3\u679c\u7684\u4e00\u81f4\u6027\uff0c\u800cNMI\u5219\u80fd\u66f4\u51c6\u786e\u5730\u53cd\u6620\u805a\u7c7b\u7ed3\u679c\u4e0e\u771f\u5b9e\u6807\u7b7e\u4e4b\u95f4\u7684\u5173\u8054\u7a0b\u5ea6\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u7efc\u4e0a\u6240\u8ff0\uff0cACC\u548cNMI\u5206\u522b\u4ece\u4e0d\u540c\u7684\u89d2\u5ea6\u8bc4\u4f30\u805a\u7c7b\u7ed3\u679c\u7684\u8d28\u91cf\uff0c\u9ad8ACC\u548c\u4f4eNMI\u53ef\u80fd\u662f\u7531\u4e8e\u6570\u636e\u4e0d\u5e73\u8861\u3001\u566a\u58f0\u548c\u5f02\u5e38\u503c\u4ee5\u53ca\u7c07\u7ed3\u6784\u4e0d\u4e00\u81f4\u7b49\u56e0\u7d20\u7684\u5f71\u54cd\u3002\u56e0\u6b64\uff0c\u5728\u673a\u5668\u5b66\u4e60\u4e2d\u9a8c\u8bc1\u805a\u7c7b\u7ed3\u679c\u65f6\uff0c\u9700\u8981\u7efc\u5408\u8003\u8651\u591a\u4e2a\u8bc4\u4f30\u6307\u6807\uff0c\u4ee5\u5168\u9762\u8bc4\u4f30\u805a\u7c7b\u7b97\u6cd5\u7684\u6548\u679c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728\u673a\u5668\u5b66\u4e60\u9a8c\u8bc1\u805a\u7c7b\u7ed3\u679c\u65f6\uff0cACC\uff08Accuracy\uff09\u9ad8\u800cNMI\uff08Normalized Mutual Infor [&hellip;]","protected":false},"author":3,"featured_media":188126,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/188123"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=188123"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/188123\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/188126"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=188123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=188123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=188123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}