{"id":497,"date":"2021-08-27T16:19:48","date_gmt":"2021-08-27T08:19:48","guid":{"rendered":"https:\/\/aif.amtbbs.org\/?p=497"},"modified":"2021-08-27T16:19:48","modified_gmt":"2021-08-27T08:19:48","slug":"%e3%80%90%e8%81%9a%e7%b1%bb%e3%80%91%e4%ba%94%e7%a7%8d%e4%b8%bb%e8%a6%81%e8%81%9a%e7%b1%bb%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/aif.amtbbs.org\/index.php\/2021\/08\/27\/497\/","title":{"rendered":"\u3010\u805a\u7c7b\u3011\u4e94\u79cd\u4e3b\u8981\u805a\u7c7b\u7b97\u6cd5"},"content":{"rendered":"<p>\u805a\u7c7b\u662f\u4e00\u79cd\u673a\u5668\u5b66\u4e60\u6280\u672f\uff0c\u5b83\u6d89\u53ca\u5230\u6570\u636e\u70b9\u7684\u5206\u7ec4\u3002\u7ed9\u5b9a\u4e00\u7ec4\u6570\u636e\u70b9\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u805a\u7c7b\u7b97\u6cd5\u5c06\u6bcf\u4e2a\u6570\u636e\u70b9\u5212\u5206\u4e3a\u4e00\u4e2a\u7279\u5b9a\u7684\u7ec4\u3002\u7406\u8bba\u4e0a\uff0c\u540c\u4e00\u7ec4\u4e2d\u7684\u6570\u636e\u70b9\u5e94\u8be5\u5177\u6709\u76f8\u4f3c\u7684\u5c5e\u6027\u548c\/\u6216\u7279\u5f81\uff0c\u800c\u4e0d\u540c\u7ec4\u4e2d\u7684\u6570\u636e\u70b9\u5e94\u8be5\u5177\u6709\u9ad8\u5ea6\u4e0d\u540c\u7684\u5c5e\u6027\u548c\/\u6216\u7279\u5f81\u3002\u805a\u7c7b\u662f\u4e00\u79cd\u65e0\u76d1\u7763\u5b66\u4e60\u7684\u65b9\u6cd5\uff0c\u662f\u8bb8\u591a\u9886\u57df\u4e2d\u5e38\u7528\u7684\u7edf\u8ba1\u6570\u636e\u5206\u6790\u6280\u672f\u3002<\/p>\n<p>\u5728\u6570\u636e\u79d1\u5b66\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u805a\u7c7b\u5206\u6790\u4ece\u6211\u4eec\u7684\u6570\u636e\u4e2d\u83b7\u5f97\u4e00\u4e9b\u6709\u4ef7\u503c\u7684\u89c1\u89e3\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u7814\u7a765\u79cd\u6d41\u884c\u7684\u805a\u7c7b\u7b97\u6cd5\u4ee5\u53ca\u5b83\u4eec\u7684\u4f18\u7f3a\u70b9\u3002<\/p>\n<p>K-MEANS\u805a\u7c7b\u7b97\u6cd5<\/p>\n<p>K-Means\u805a\u7c7b\u7b97\u6cd5\u53ef\u80fd\u662f\u5927\u5bb6\u6700\u719f\u6089\u7684\u805a\u7c7b\u7b97\u6cd5\u3002\u5b83\u51fa\u73b0\u5728\u5f88\u591a\u4ecb\u7ecd\u6027\u7684\u6570\u636e\u79d1\u5b66\u548c\u673a\u5668\u5b66\u4e60\u8bfe\u7a0b\u4e2d\u3002\u5728\u4ee3\u7801\u4e2d\u5f88\u5bb9\u6613\u7406\u89e3\u548c\u5b9e\u73b0\uff01\u8bf7\u770b\u4e0b\u9762\u7684\u56fe\u8868\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-501\" src=\"https:\/\/aif.amtbbs.org\/wp-content\/uploads\/2021\/08\/4ffce04d92a4d6cb21c1494cdfcd6dc1-1.gif\" width=\"480\" height=\"480\" alt=\"\u56fe\u7247\" \/><\/p>\n<p>K-Means\u805a\u7c7b<\/p>\n<p>1.\u9996\u5148\uff0c\u6211\u4eec\u9009\u62e9\u4e00\u4e9b\u7c7b\/\u7ec4\u6765\u4f7f\u7528\u5e76\u968f\u673a\u5730\u521d\u59cb\u5316\u5b83\u4eec\u5404\u81ea\u7684\u4e2d\u5fc3\u70b9\u3002\u8981\u60f3\u77e5\u9053\u8981\u4f7f\u7528\u7684\u7c7b\u7684\u6570\u91cf\uff0c\u6700\u597d\u5feb\u901f\u5730\u67e5\u770b\u4e00\u4e0b\u6570\u636e\uff0c\u5e76\u5c1d\u8bd5\u8bc6\u522b\u4efb\u4f55\u4e0d\u540c\u7684\u5206\u7ec4\u3002\u4e2d\u5fc3\u70b9\u662f\u4e0e\u6bcf\u4e2a\u6570\u636e\u70b9\u5411\u91cf\u76f8\u540c\u957f\u5ea6\u7684\u5411\u91cf\uff0c\u5728\u4e0a\u9762\u7684\u56fe\u5f62\u4e2d\u662f\u201cX\u201d\u3002<\/p>\n<p>2.\u6bcf\u4e2a\u6570\u636e\u70b9\u901a\u8fc7\u8ba1\u7b97\u70b9\u548c\u6bcf\u4e2a\u7ec4\u4e2d\u5fc3\u4e4b\u95f4\u7684\u8ddd\u79bb\u8fdb\u884c\u5206\u7c7b\uff0c\u7136\u540e\u5c06\u8fd9\u4e2a\u70b9\u5206\u7c7b\u4e3a\u6700\u63a5\u8fd1\u5b83\u7684\u7ec4\u3002<\/p>\n<p>3.\u57fa\u4e8e\u8fd9\u4e9b\u5206\u7c7b\u70b9\uff0c\u6211\u4eec\u901a\u8fc7\u53d6\u7ec4\u4e2d\u6240\u6709\u5411\u91cf\u7684\u5747\u503c\u6765\u91cd\u65b0\u8ba1\u7b97\u7ec4\u4e2d\u5fc3\u3002<\/p>\n<p>4.\u5bf9\u4e00\u7ec4\u8fed\u4ee3\u91cd\u590d\u8fd9\u4e9b\u6b65\u9aa4\u3002\u4f60\u8fd8\u53ef\u4ee5\u9009\u62e9\u968f\u673a\u521d\u59cb\u5316\u7ec4\u4e2d\u5fc3\u51e0\u6b21\uff0c\u7136\u540e\u9009\u62e9\u90a3\u4e9b\u770b\u8d77\u6765\u5bf9\u5b83\u63d0\u4f9b\u4e86\u6700\u597d\u7ed3\u679c\u7684\u6765\u8fd0\u884c\u3002<\/p>\n<p>K-Means\u805a\u7c7b\u7b97\u6cd5\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u7684\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u56e0\u4e3a\u6211\u4eec\u6240\u505a\u7684\u53ea\u662f\u8ba1\u7b97\u70b9\u548c\u7fa4\u4e2d\u5fc3\u4e4b\u95f4\u7684\u8ddd\u79bb;\u5b83\u6709\u4e00\u4e2a\u7ebf\u6027\u590d\u6742\u5ea6O(n)\u3002<\/p>\n<p>\u53e6\u4e00\u65b9\u9762\uff0cK-Means\u4e5f\u6709\u51e0\u4e2a\u7f3a\u70b9\u3002\u9996\u5148\uff0c\u4f60\u5fc5\u987b\u9009\u62e9\u6709\u591a\u5c11\u7ec4\/\u7c7b\u3002\u8fd9\u5e76\u4e0d\u662f\u4e0d\u91cd\u8981\u7684\u4e8b\uff0c\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5e0c\u671b\u5b83\u80fd\u5e2e\u6211\u4eec\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff0c\u56e0\u4e3a\u5b83\u7684\u5173\u952e\u5728\u4e8e\u4ece\u6570\u636e\u4e2d\u83b7\u5f97\u4e00\u4e9b\u542f\u793a\u3002K-Means\u4e5f\u4ece\u968f\u673a\u9009\u62e9\u7684\u805a\u7c7b\u4e2d\u5fc3\u5f00\u59cb\uff0c\u56e0\u6b64\u5728\u4e0d\u540c\u7684\u7b97\u6cd5\u8fd0\u884c\u4e2d\u53ef\u80fd\u4ea7\u751f\u4e0d\u540c\u7684\u805a\u7c7b\u7ed3\u679c\u3002\u56e0\u6b64\uff0c\u7ed3\u679c\u53ef\u80fd\u662f\u4e0d\u53ef\u91cd\u590d\u7684\uff0c\u5e76\u4e14\u7f3a\u4e4f\u4e00\u81f4\u6027\u3002\u5176\u4ed6\u805a\u7c7b\u65b9\u6cd5\u66f4\u52a0\u4e00\u81f4\u3002<\/p>\n<p>K-Medians\u662f\u53e6\u4e00\u79cd\u4e0eK-Means\u6709\u5173\u7684\u805a\u7c7b\u7b97\u6cd5\uff0c\u9664\u4e86\u4f7f\u7528\u5747\u503c\u7684\u4e2d\u95f4\u503c\u6765\u91cd\u65b0\u8ba1\u7b97\u7ec4\u4e2d\u5fc3\u70b9\u4ee5\u5916\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5bf9\u79bb\u7fa4\u503c\u7684\u654f\u611f\u5ea6\u8f83\u4f4e\uff08\u56e0\u4e3a\u4f7f\u7528\u4e2d\u503c\uff09\uff0c\u4f46\u5bf9\u4e8e\u8f83\u5927\u7684\u6570\u636e\u96c6\u6765\u8bf4\uff0c\u5b83\u8981\u6162\u5f97\u591a\uff0c\u56e0\u4e3a\u5728\u8ba1\u7b97\u4e2d\u503c\u5411\u91cf\u65f6\uff0c\u6bcf\u6b21\u8fed\u4ee3\u90fd\u9700\u8981\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<p>\u5747\u503c\u504f\u79fb\u805a\u7c7b\u7b97\u6cd5<\/p>\n<p>\u5747\u503c\u504f\u79fb\uff08Mean shift\uff09\u805a\u7c7b\u7b97\u6cd5\u662f\u4e00\u79cd\u57fa\u4e8e\u6ed1\u52a8\u7a97\u53e3\uff08sliding-window\uff09\u7684\u7b97\u6cd5\uff0c\u5b83\u8bd5\u56fe\u627e\u5230\u5bc6\u96c6\u7684\u6570\u636e\u70b9\u3002\u800c\u4e14\uff0c\u5b83\u8fd8\u662f\u4e00\u79cd\u57fa\u4e8e\u4e2d\u5fc3\u7684\u7b97\u6cd5\uff0c\u5b83\u7684\u76ee\u6807\u662f\u5b9a\u4f4d\u6bcf\u4e00\u7ec4\u7fa4\/\u7c7b\u7684\u4e2d\u5fc3\u70b9\uff0c\u901a\u8fc7\u66f4\u65b0\u4e2d\u5fc3\u70b9\u7684\u5019\u9009\u70b9\u6765\u5b9e\u73b0\u6ed1\u52a8\u7a97\u53e3\u4e2d\u7684\u70b9\u7684\u5e73\u5747\u503c\u3002\u8fd9\u4e9b\u5019\u9009\u7a97\u53e3\u5728\u540e\u671f\u5904\u7406\u9636\u6bb5\u88ab\u8fc7\u6ee4\uff0c\u4ee5\u6d88\u9664\u51e0\u4e4e\u91cd\u590d\u7684\u90e8\u5206\uff0c\u5f62\u6210\u6700\u540e\u4e00\u7ec4\u4e2d\u5fc3\u70b9\u53ca\u5176\u5bf9\u5e94\u7684\u7ec4\u3002\u8bf7\u770b\u4e0b\u9762\u7684\u56fe\u8868\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-502\" src=\"https:\/\/aif.amtbbs.org\/wp-content\/uploads\/2021\/08\/4ffce04d92a4d6cb21c1494cdfcd6dc1-2.gif\" width=\"324\" height=\"324\" alt=\"\u56fe\u7247\" \/><\/p>\n<p>\u5355\u6ed1\u52a8\u7a97\u53e3\u7684\u5747\u503c\u504f\u79fb\u805a\u7c7b<\/p>\n<p>1.\u4e3a\u4e86\u89e3\u91ca\u8fd9\u4e00\u53d8\u5316\uff0c\u6211\u4eec\u5c06\u8003\u8651\u4e8c\u7ef4\u7a7a\u95f4\u4e2d\u7684\u4e00\u7ec4\u70b9\uff08\u5c31\u50cf\u4e0a\u9762\u7684\u4f8b\u5b50\uff09\u3002\u6211\u4eec\u4ece\u4e00\u4e2a\u4ee5\u70b9C\uff08\u968f\u673a\u9009\u62e9\uff09\u4e3a\u4e2d\u5fc3\u7684\u5706\u5f62\u6ed1\u7a97\u5f00\u59cb\uff0c\u4ee5\u534a\u5f84r\u4e3a\u5185\u6838\u3002\u5747\u503c\u504f\u79fb\u662f\u4e00\u79cd\u722c\u5c71\u7b97\u6cd5\uff08hill climbing algorithm\uff09\uff0c\u5b83\u9700\u8981\u5728\u6bcf\u4e2a\u6b65\u9aa4\u4e2d\u53cd\u590d\u5730\u5c06\u8fd9\u4e2a\u5185\u6838\u79fb\u52a8\u5230\u4e00\u4e2a\u66f4\u9ad8\u7684\u5bc6\u5ea6\u533a\u57df\uff0c\u76f4\u5230\u6536\u655b\u3002<\/p>\n<p>2.\u5728\u6bcf\u4e00\u6b21\u8fed\u4ee3\u4e2d\uff0c\u6ed1\u52a8\u7a97\u53e3\u4f1a\u79fb\u5411\u5bc6\u5ea6\u8f83\u9ad8\u7684\u533a\u57df\uff0c\u5c06\u4e2d\u5fc3\u70b9\u79fb\u52a8\u5230\u7a97\u53e3\u5185\u7684\u70b9\u7684\u5e73\u5747\u503c\uff08\u56e0\u6b64\u5f97\u540d\uff09\u3002\u6ed1\u52a8\u7a97\u53e3\u4e2d\u7684\u5bc6\u5ea6\u4e0e\u5b83\u5185\u90e8\u7684\u70b9\u7684\u6570\u91cf\u6210\u6bd4\u4f8b\u3002\u81ea\u7136\u5730\uff0c\u901a\u8fc7\u79fb\u5411\u7a97\u53e3\u4e2d\u70b9\u7684\u5e73\u5747\u503c\uff0c\u5b83\u5c06\u9010\u6e10\u5411\u66f4\u9ad8\u7684\u70b9\u5bc6\u5ea6\u65b9\u5411\u79fb\u52a8\u3002<\/p>\n<p>3.\u6211\u4eec\u7ee7\u7eed\u6839\u636e\u5747\u503c\u79fb\u52a8\u6ed1\u52a8\u7a97\u53e3\uff0c\u76f4\u5230\u6ca1\u6709\u65b9\u5411\u79fb\u52a8\u53ef\u4ee5\u5bb9\u7eb3\u5185\u6838\u4e2d\u7684\u66f4\u591a\u70b9\u3002\u770b\u770b\u4e0a\u9762\u7684\u56fe\u8868;\u6211\u4eec\u4e00\u76f4\u5728\u79fb\u52a8\u8fd9\u4e2a\u5706\uff0c\u76f4\u5230\u6211\u4eec\u4e0d\u518d\u589e\u52a0\u5bc6\u5ea6\uff08\u4e5f\u5c31\u662f\u7a97\u53e3\u4e2d\u7684\u70b9\u6570\uff09\u3002<\/p>\n<p>4.\u6b65\u9aa41\u52303\u7684\u8fc7\u7a0b\u662f\u7528\u8bb8\u591a\u6ed1\u52a8\u7a97\u53e3\u5b8c\u6210\u7684\uff0c\u76f4\u5230\u6240\u6709\u7684\u70b9\u90fd\u4f4d\u4e8e\u4e00\u4e2a\u7a97\u53e3\u5185\u3002\u5f53\u591a\u4e2a\u6ed1\u52a8\u7a97\u53e3\u91cd\u53e0\u7684\u65f6\u5019\uff0c\u5305\u542b\u6700\u591a\u70b9\u7684\u7a97\u53e3\u4f1a\u88ab\u4fdd\u7559\u3002\u7136\u540e\uff0c\u6570\u636e\u70b9\u6839\u636e\u5b83\u4eec\u6240\u5728\u7684\u6ed1\u52a8\u7a97\u53e3\u805a\u7c7b\u3002<\/p>\n<p>\u4e0b\u9762\u5c55\u793a\u4e86\u4ece\u7aef\u5230\u7aef\u6240\u6709\u6ed1\u52a8\u7a97\u53e3\u7684\u6574\u4e2a\u8fc7\u7a0b\u7684\u6f14\u793a\u3002\u6bcf\u4e2a\u9ed1\u70b9\u4ee3\u8868\u4e00\u4e2a\u6ed1\u52a8\u7a97\u53e3\u7684\u8d28\u5fc3\uff0c\u6bcf\u4e2a\u7070\u8272\u70b9\u90fd\u662f\u4e00\u4e2a\u6570\u636e\u70b9\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-503\" src=\"https:\/\/aif.amtbbs.org\/wp-content\/uploads\/2021\/08\/4ffce04d92a4d6cb21c1494cdfcd6dc1-3.gif\" width=\"432\" height=\"432\" alt=\"\u56fe\u7247\" \/><\/p>\n<p>\u5747\u503c\u504f\u79fb\u805a\u7c7b\u7684\u6574\u4e2a\u8fc7\u7a0b<\/p>\n<p>\u4e0eK-Means\u805a\u7c7b\u76f8\u6bd4\uff0c\u5747\u503c\u504f\u79fb\u4e0d\u9700\u8981\u9009\u62e9\u805a\u7c7b\u7684\u6570\u91cf\uff0c\u56e0\u4e3a\u5b83\u4f1a\u81ea\u52a8\u5730\u53d1\u73b0\u8fd9\u4e00\u70b9\u3002\u8fd9\u662f\u4e00\u4e2a\u5de8\u5927\u7684\u4f18\u52bf\u3002\u805a\u7c7b\u4e2d\u5fc3\u6536\u655b\u4e8e\u6700\u5927\u5bc6\u5ea6\u70b9\u7684\u4e8b\u5b9e\u4e5f\u662f\u975e\u5e38\u53ef\u53d6\u7684\uff0c\u56e0\u4e3a\u5b83\u975e\u5e38\u76f4\u89c2\u5730\u7406\u89e3\u5e76\u9002\u5408\u4e8e\u4e00\u79cd\u81ea\u7136\u6570\u636e\u9a71\u52a8\u3002\u7f3a\u70b9\u662f\u9009\u62e9\u7a97\u53e3\u5927\u5c0f\/\u534a\u5f84r\u662f\u975e\u5e38\u5173\u952e\u7684\uff0c\u6240\u4ee5\u4e0d\u80fd\u758f\u5ffd\u3002<\/p>\n<p>DBSCAN\u805a\u7c7b\u7b97\u6cd5<\/p>\n<p>DBSCAN(Density-Based Spatial Clustering of Applications with Noise)\u662f\u4e00\u4e2a\u6bd4\u8f83\u6709\u4ee3\u8868\u6027\u7684\u57fa\u4e8e\u5bc6\u5ea6\u7684\u805a\u7c7b\u7b97\u6cd5\uff0c\u7c7b\u4f3c\u4e8e\u5747\u503c\u8f6c\u79fb\u805a\u7c7b\u7b97\u6cd5\uff0c\u4f46\u5b83\u6709\u51e0\u4e2a\u663e\u8457\u7684\u4f18\u70b9\u3002<\/p>\n<p>DBSCAN\u7b11\u8138\u805a\u7c7b<\/p>\n<p>1.DBSCAN\u4ee5\u4e00\u4e2a\u4ece\u672a\u8bbf\u95ee\u8fc7\u7684\u4efb\u610f\u8d77\u59cb\u6570\u636e\u70b9\u5f00\u59cb\u3002\u8fd9\u4e2a\u70b9\u7684\u90bb\u57df\u662f\u7528\u8ddd\u79bb\u03b5\uff08\u6240\u6709\u5728\u03b5\u8ddd\u79bb\u7684\u70b9\u90fd\u662f\u90bb\u70b9\uff09\u6765\u63d0\u53d6\u7684\u3002<\/p>\n<p>2.\u5982\u679c\u5728\u8fd9\u4e2a\u90bb\u57df\u4e2d\u6709\u8db3\u591f\u6570\u91cf\u7684\u70b9\uff08\u6839\u636e minPoints\uff09\uff0c\u90a3\u4e48\u805a\u7c7b\u8fc7\u7a0b\u5c31\u5f00\u59cb\u4e86\uff0c\u5e76\u4e14\u5f53\u524d\u7684\u6570\u636e\u70b9\u6210\u4e3a\u65b0\u805a\u7c7b\u4e2d\u7684\u7b2c\u4e00\u4e2a\u70b9\u3002\u5426\u5219\uff0c\u8be5\u70b9\u5c06\u88ab\u6807\u8bb0\u4e3a\u566a\u58f0\uff08\u7a0d\u540e\u8fd9\u4e2a\u566a\u58f0\u70b9\u53ef\u80fd\u4f1a\u6210\u4e3a\u805a\u7c7b\u7684\u4e00\u90e8\u5206\uff09\u3002\u5728\u8fd9\u4e24\u79cd\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e00\u70b9\u90fd\u88ab\u6807\u8bb0\u4e3a\u201c\u8bbf\u95ee\uff08visited\uff09\u201d\u3002<\/p>\n<p>3.\u5bf9\u4e8e\u65b0\u805a\u7c7b\u4e2d\u7684\u7b2c\u4e00\u4e2a\u70b9\uff0c\u5176\u03b5\u8ddd\u79bb\u9644\u8fd1\u7684\u70b9\u4e5f\u4f1a\u6210\u4e3a\u540c\u4e00\u805a\u7c7b\u7684\u4e00\u90e8\u5206\u3002\u8fd9\u4e00\u8fc7\u7a0b\u4f7f\u5728\u03b5\u90bb\u8fd1\u7684\u6240\u6709\u70b9\u90fd\u5c5e\u4e8e\u540c\u4e00\u4e2a\u805a\u7c7b\uff0c\u7136\u540e\u91cd\u590d\u6240\u6709\u521a\u521a\u6dfb\u52a0\u5230\u805a\u7c7b\u7ec4\u7684\u65b0\u70b9\u3002<\/p>\n<p>4.\u6b65\u9aa42\u548c\u6b65\u9aa43\u7684\u8fc7\u7a0b\u5c06\u91cd\u590d\uff0c\u76f4\u5230\u805a\u7c7b\u4e2d\u7684\u6240\u6709\u70b9\u90fd\u88ab\u786e\u5b9a\uff0c\u5c31\u662f\u8bf4\u5728\u805a\u7c7b\u9644\u8fd1\u7684\u6240\u6709\u70b9\u90fd\u5df2\u88ab\u8bbf\u95ee\u548c\u6807\u8bb0\u3002<\/p>\n<p>5.\u4e00\u65e6\u6211\u4eec\u5b8c\u6210\u4e86\u5f53\u524d\u7684\u805a\u7c7b\uff0c\u5c31\u4f1a\u68c0\u7d22\u5e76\u5904\u7406\u4e00\u4e2a\u65b0\u7684\u672a\u8bbf\u95ee\u70b9\uff0c\u8fd9\u5c06\u5bfc\u81f4\u8fdb\u4e00\u6b65\u7684\u805a\u7c7b\u6216\u566a\u58f0\u7684\u53d1\u73b0\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4e0d\u65ad\u5730\u91cd\u590d\uff0c\u76f4\u5230\u6240\u6709\u7684\u70b9\u88ab\u6807\u8bb0\u4e3a\u8bbf\u95ee\u3002\u56e0\u4e3a\u5728\u6240\u6709\u7684\u70b9\u90fd\u88ab\u8bbf\u95ee\u8fc7\u4e4b\u540e\uff0c\u6bcf\u4e00\u4e2a\u70b9\u90fd\u88ab\u6807\u8bb0\u4e3a\u5c5e\u4e8e\u4e00\u4e2a\u805a\u7c7b\u6216\u8005\u662f\u566a\u97f3\u3002<\/p>\n<p>DBSCAN\u6bd4\u5176\u4ed6\u805a\u7c7b\u7b97\u6cd5\u6709\u4e00\u4e9b\u4f18\u52bf\u3002\u9996\u5148\uff0c\u5b83\u4e0d\u9700\u8981\u4e00\u4e2a\u9884\u8bbe\u5b9a\u7684\u805a\u7c7b\u6570\u91cf\u3002\u5b83\u8fd8\u5c06\u5f02\u5e38\u503c\u8bc6\u522b\u4e3a\u566a\u58f0\uff0c\u800c\u4e0d\u50cf\u5747\u503c\u504f\u79fb\u805a\u7c7b\u7b97\u6cd5\uff0c\u5373\u4f7f\u6570\u636e\u70b9\u975e\u5e38\u4e0d\u540c\uff0c\u5b83\u4e5f\u4f1a\u5c06\u5b83\u4eec\u653e\u5165\u4e00\u4e2a\u805a\u7c7b\u4e2d\u3002\u6b64\u5916\uff0c\u5b83\u8fd8\u80fd\u5f88\u597d\u5730\u627e\u5230\u4efb\u610f\u5927\u5c0f\u548c\u4efb\u610f\u5f62\u72b6\u7684\u805a\u7c7b\u3002<\/p>\n<p>DBSCAN\u7684\u4e3b\u8981\u7f3a\u70b9\u662f\uff0c\u5f53\u805a\u7c7b\u5177\u6709\u4e0d\u540c\u7684\u5bc6\u5ea6\u65f6\uff0c\u5b83\u7684\u6027\u80fd\u4e0d\u50cf\u5176\u4ed6\u805a\u7c7b\u7b97\u6cd5\u90a3\u6837\u597d\u3002\u8fd9\u662f\u56e0\u4e3a\u5f53\u5bc6\u5ea6\u53d8\u5316\u65f6\uff0c\u8ddd\u79bb\u9608\u503c\u03b5\u548c\u8bc6\u522b\u90bb\u8fd1\u70b9\u7684minPoints\u7684\u8bbe\u7f6e\u4f1a\u968f\u7740\u805a\u7c7b\u7684\u4e0d\u540c\u800c\u53d8\u5316\u3002\u8fd9\u79cd\u7f3a\u70b9\u4e5f\u4f1a\u51fa\u73b0\u5728\u975e\u5e38\u9ad8\u7ef4\u7684\u6570\u636e\u4e2d\uff0c\u56e0\u4e3a\u8ddd\u79bb\u9608\u503c\u03b5\u53d8\u5f97\u96be\u4ee5\u4f30\u8ba1\u3002<\/p>\n<p>\u4f7f\u7528\u9ad8\u65af\u6df7\u5408\u6a21\u578b\uff08GMM\uff09\u7684\u671f\u671b\u6700\u5927\u5316\uff08EM\uff09\u805a\u7c7b<\/p>\n<p>K-Means\u7684\u4e00\u4e2a\u4e3b\u8981\u7f3a\u70b9\u662f\u5b83\u5bf9\u805a\u7c7b\u4e2d\u5fc3\u7684\u5e73\u5747\u503c\u7684\u4f7f\u7528\u5f88\u7b80\u5355\u5e7c\u7a1a\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u770b\u4e0b\u9762\u7684\u56fe\u7247\u6765\u4e86\u89e3\u4e3a\u4ec0\u4e48\u8fd9\u4e0d\u662f\u6700\u597d\u7684\u65b9\u6cd5\u3002\u5728\u5de6\u8fb9\u770b\u8d77\u6765\u5f88\u660e\u663e\u7684\u662f\uff0c\u6709\u4e24\u4e2a\u5706\u5f62\u7684\u805a\u7c7b\uff0c\u4e0d\u540c\u7684\u534a\u5f84\u4ee5\u76f8\u540c\u7684\u5e73\u5747\u503c\u4e3a\u4e2d\u5fc3\u3002K-Means\u65e0\u6cd5\u5904\u7406\uff0c\u56e0\u4e3a\u805a\u7c7b\u7684\u5747\u503c\u975e\u5e38\u63a5\u8fd1\u3002\u5728\u805a\u7c7b\u4e0d\u662f\u5faa\u73af\u7684\u60c5\u51b5\u4e0b\uff0cK-Means\u4e5f\u4f1a\u5931\u8d25\uff0c\u8fd9\u4e5f\u662f\u4f7f\u7528\u5747\u503c\u4f5c\u4e3a\u805a\u7c7b\u4e2d\u5fc3\u7684\u7ed3\u679c\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-504\" src=\"https:\/\/aif.amtbbs.org\/wp-content\/uploads\/2021\/08\/4ffce04d92a4d6cb21c1494cdfcd6dc1-46.png\" width=\"357\" height=\"180\" alt=\"\u56fe\u7247\" srcset=\"https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2021\/08\/4ffce04d92a4d6cb21c1494cdfcd6dc1-46.png 357w, https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2021\/08\/4ffce04d92a4d6cb21c1494cdfcd6dc1-46-300x151.png 300w\" sizes=\"auto, (max-width: 357px) 100vw, 357px\" \/><\/p>\n<p>K-Means\u7684\u4e24\u4e2a\u5931\u8d25\u6848\u4f8b<\/p>\n<p>\u9ad8\u65af\u6df7\u5408\u6a21\u578b\uff08GMMs\uff09\u6bd4K-Means\u66f4\u5177\u7075\u6d3b\u6027\u3002\u4f7f\u7528\u9ad8\u65af\u6df7\u5408\u6a21\u578b\uff0c\u6211\u4eec\u53ef\u4ee5\u5047\u8bbe\u6570\u636e\u70b9\u662f\u9ad8\u65af\u5206\u5e03\u7684;\u6bd4\u8d77\u8bf4\u5b83\u4eec\u662f\u5faa\u73af\u7684\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e0d\u90a3\u4e48\u4e25\u683c\u7684\u5047\u8bbe\u3002\u8fd9\u6837\uff0c\u6211\u4eec\u5c31\u6709\u4e24\u4e2a\u53c2\u6570\u6765\u63cf\u8ff0\u805a\u7c7b\u7684\u5f62\u72b6\uff1a\u5e73\u5747\u503c\u548c\u6807\u51c6\u5dee\uff01\u4ee5\u4e8c\u7ef4\u7684\u4f8b\u5b50\u4e3a\u4f8b\uff0c\u8fd9\u610f\u5473\u7740\u805a\u7c7b\u53ef\u4ee5\u91c7\u7528\u4efb\u4f55\u5f62\u5f0f\u7684\u692d\u5706\u5f62\u72b6\uff08\u56e0\u4e3a\u5728x\u548cy\u65b9\u5411\u4e0a\u90fd\u6709\u6807\u51c6\u5dee\uff09\u3002\u56e0\u6b64\uff0c\u6bcf\u4e2a\u9ad8\u65af\u5206\u5e03\u53ef\u5f52\u5c5e\u4e8e\u4e00\u4e2a\u5355\u72ec\u7684\u805a\u7c7b\u3002<\/p>\n<p>\u4e3a\u4e86\u627e\u5230\u6bcf\u4e2a\u805a\u7c7b\u7684\u9ad8\u65af\u5206\u5e03\u7684\u53c2\u6570\uff08\u4f8b\u5982\u5e73\u5747\u503c\u548c\u6807\u51c6\u5dee\uff09\u6211\u4eec\u5c06\u4f7f\u7528\u4e00\u79cd\u53eb\u505a\u671f\u671b\u6700\u5927\u5316\uff08EM\uff09\u7684\u4f18\u5316\u7b97\u6cd5\u3002\u770b\u770b\u4e0b\u9762\u7684\u56fe\u8868\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u9ad8\u65af\u6df7\u5408\u6a21\u578b\u662f\u88ab\u62df\u5408\u5230\u805a\u7c7b\u4e0a\u7684\u3002\u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u7ee7\u7eed\u8fdb\u884c\u671f\u671b\u7684\u8fc7\u7a0b\u2014\u2014\u4f7f\u7528\u9ad8\u65af\u6df7\u5408\u6a21\u578b\u5b9e\u73b0\u6700\u5927\u5316\u805a\u7c7b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-505\" src=\"https:\/\/aif.amtbbs.org\/wp-content\/uploads\/2021\/08\/4ffce04d92a4d6cb21c1494cdfcd6dc1-4.gif\" width=\"360\" height=\"309\" alt=\"\u56fe\u7247\" 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