{"id":2068,"date":"2019-04-18T22:14:18","date_gmt":"2019-04-18T14:14:18","guid":{"rendered":"http:\/\/www.storagelab.org.cn\/zhangdi\/?p=2068"},"modified":"2019-04-18T22:14:18","modified_gmt":"2019-04-18T14:14:18","slug":"%e9%ab%98%e7%bb%b4%e6%95%b0%e6%8d%ae%e7%9a%84%e6%95%b0%e6%8d%ae%e7%b2%be%e7%ae%80%e6%96%b9%e6%b3%95%e6%b1%87%e6%80%bb","status":"publish","type":"post","link":"https:\/\/www.divis.cn\/index.php\/2019\/04\/18\/%e9%ab%98%e7%bb%b4%e6%95%b0%e6%8d%ae%e7%9a%84%e6%95%b0%e6%8d%ae%e7%b2%be%e7%ae%80%e6%96%b9%e6%b3%95%e6%b1%87%e6%80%bb\/","title":{"rendered":"\u9ad8\u7ef4\u6570\u636e\u7684\u6570\u636e\u7cbe\u7b80\u65b9\u6cd5\u6c47\u603b"},"content":{"rendered":"<p>\u9ad8\u7ef4\u591a\u5143\u6570\u636e\uff08Multidimensional Multivariate Data\uff0c MDMV Data\uff09\uff0c\u6307\u6bcf\u4e2a\u6570\u636e\u5bf9\u8c61\u5177\u6709\u4e24\u4e2a\u6216\u4e24\u4e2a\u4ee5\u4e0a\u72ec\u7acb\u6216\u76f8\u5173\u5c5e\u6027\u7684\u6570\u636e\u3002\u9ad8\u7ef4\u591a\u5143\u6570\u636e\u5728\u4eba\u7c7b\u793e\u4f1a\u751f\u6d3b\u4e2d\u666e\u904d\u5b58\u5728\uff0c\u4e14\u6570\u91cf\u548c\u89c4\u6a21\u968f\u7740\u4fe1\u606f\u5316\u8fdb\u7a0b\u52a0\u6df1\u800c\u4e0d\u65ad\u589e\u957f\u3002\u9ad8\u7ef4\u591a\u5143\u6570\u636e\u7684\u6765\u6e90\u975e\u5e38\u5e7f\u6cdb\uff0c\u4eba\u53e3\u7edf\u8ba1\u6570\u636e\u96c6\uff0c\u7ecf\u6d4e\u666e\u67e5\u6570\u636e\u96c6\uff0c\u516c\u53f8\u8d22\u653f\u7ba1\u7406\u6570\u636e\u96c6\uff0c\u7535\u5b50\u90ae\u4ef6\u4fe1\u606f\u8bb0\u5f55\uff0c\u56fe\u50cf\u6570\u636e\u96c6\uff0c\u4f20\u611f\u5668\u7f51\u7edc\u6570\u636e\u96c6\uff0c\u793e\u4ea4\u7f51\u7edc\u6570\u636e\u96c6\u7b49\u590d\u6742\u6570\u636e\u96c6\uff0c\u90fd\u5c5e\u4e8e\u9ad8\u7ef4\u591a\u5143\u6570\u636e\u3002\u82e5\u6839\u636e\u5176\u4e2d\u4e3b\u8981\u6570\u636e\u7c7b\u578b\u6216\u5206\u6790\u5904\u7406\u9700\u6c42\u7684\u4e0d\u540c\uff0c\u9ad8\u7ef4\u591a\u5143\u6570\u636e\u6d89\u53ca\u6587\u672c\u6570\u636e\u3001\u5c42\u6b21\u7ed3\u6784\u6570\u636e\u3001\u7f51\u7edc\u7ed3\u6784\u6570\u636e\u3001\u7a7a\u95f4\u6570\u636e\u3001\u65f6\u5e8f\u6570\u636e\u3001\u6d41\u6570\u636e\u7b49\u8bf8\u591a\u5b50\u9886\u57df\uff0c\u800c\u6bcf\u4e2a\u5b50\u9886\u57df\u53c8\u6709\u72ec\u7279\u7684\u53ef\u89c6\u5316\u548c\u5206\u6790\u65b9\u6cd5\u3002<\/p>\n<p>\u867d\u7136\u73b0\u9636\u6bb5\u673a\u5668\u667a\u80fd\u529f\u80fd\u6709\u9650\uff0c\u5f88\u591a\u5206\u6790\u9886\u57df\u5c1a\u9700\u501f\u52a9\u4eba\u7c7b\u7684\u667a\u6167\u4ecb\u5165\u6570\u636e\u5206\u6790\u3002\u4f46\u662f\u9ad8\u7ef4\u6570\u636e\u4eba\u7c7b\u96be\u4ee5\u7406\u89e3\uff0c\u4eba\u53ea\u80fd\u76f4\u89c2\u5730\u4e86\u89e3\u4e8c\u7ef4\u6216\u4e09\u7ef4\u6570\u636e\u3002\u73b0\u9636\u6bb5\u5e94\u5bf9\u9ad8\u7ef4\u6570\u636e\u7684\u53ef\u89c6\u5316\uff0c\u4e3b\u8981\u6709\u4e24\u65b9\u9762\u7684\u5904\u7406\u8def\u5f84\uff1a<\/p>\n<ol>\n<li>\u4ece\u6570\u636e\u5c42\u9762\u8003\u8651\uff0c\u8fdb\u884c\u6570\u636e\u7cbe\u7b80\uff08data\u00a0 reduction\uff09\u3002\u7b80\u800c\u8a00\u4e4b\u5c31\u662f\u51cf\u5c11\u6570\u636e\u7684\u7edd\u5bf9\u6570\u91cf\uff0c\u4ee5\u7b26\u5408\u73b0\u9636\u6bb5\u673a\u5668\u5904\u7406\u80fd\u529b\u548c\u4eba\u7684\u8bc6\u522b\u80fd\u529b\u3002\u6570\u636e\u7cbe\u7b80\u7684\u5e38\u7528\u7b56\u7565\u5305\u542b\u8fc7\u6ee4\uff08Filtering\uff09\/\u91c7\u6837\uff08Sampling\uff09\u3001\u964d\u7ef4\uff08Dimensionality Reduction\uff09\u3001\u5206\u7ec4\u805a\u5408\uff08Binned Aggregation\uff09\u3001\u6a21\u578b\u62df\u5408\uff08Model-fitting\uff09\u7b49\u3002<\/li>\n<li>\u4ece\u5c55\u793a\u5c42\u9762\u8003\u8651\uff0c\u5bf9\u53ef\u89c6\u5316\u7684\u89c6\u89c9\u6548\u679c\u8fdb\u884c\u4f18\u5316\u3002\u5305\u62ec\u8bbe\u8ba1\u53ef\u89c6\u5316\u5e03\u5c40\uff08viusal layout\uff09\u3001\u89c6\u89c9\u7f16\u7801\u65b9\u6cd5\u3001\u6570\u636e\u62bd\u8c61\u65b9\u6cd5\u3001\u4ea4\u4e92\u6280\u672f\u7b49\u3002<\/li>\n<\/ol>\n<p><strong>\u4ee5\u4e0b\u4ecb\u7ecd\u6570\u636e\u7cbe\u7b80\u65b9\u6cd5\u4e2d\u7684\u5178\u578b\u65b9\u6cd5\u548c\u7b80\u5355\u5b9a\u4e49\u3002<\/strong><\/p>\n<p><strong>1. \u6a21\u578b\u62df\u5408\uff08Model-fitting\uff09<\/strong><\/p>\n<p>\u6a21\u578b\u62df\u5408\u662f\u7edf\u8ba1\u5b66\u7684\u57fa\u672c\u65b9\u6cd5\uff0c\u5373\u4f7f\u7528\u6570\u5b66\u6a21\u578b\u6216\u7edf\u8ba1\u6458\u8981\u63cf\u8ff0\u6570\u636e\u3002\u4f8b\u5982\uff0c\u5b66\u751f\u7684\u6570\u5b66\u6210\u7ee9\u53ef\u4ee5\u4f7f\u7528\u6b63\u6001\u5206\u5e03\u53bb\u62df\u5408\uff0c\u65f6\u5e8f\u6570\u636e\u53ef\u4ee5\u4f7f\u7528\u79fb\u52a8\u5e73\u5747\u6570\u548c\u81ea\u56de\u5f52\u6a21\u578b\u53bb\u62df\u5408\uff0c\u6563\u70b9\u56fe\u53ef\u4ee5\u4f7f\u7528\u56de\u5f52\u6a21\u578b\u62df\u5408\u8d8b\u52bf\u7ebf\u3002\u901a\u5e38\uff0c\u8fd9\u4e00\u7c7b\u65b9\u6cd5\u66f4\u591a\u5730\u4f1a\u4e0e\u8fc7\u6ee4\/\u91c7\u6837\u3001\u964d\u7ef4\u3001\u5206\u7ec4\u805a\u5408\u7b49\u65b9\u6cd5\u7ed3\u5408\u4f7f\u7528\u3002\u4f8b\u5982\uff0cKairam\u7b49\u4eba<sup>[69]<\/sup>\u7ed3\u5408\u4e86\u6a21\u578b\u548c\u805a\u5408\u65b9\u6cd5\uff0c\u4f7f\u7528\u591a\u5c3a\u5ea6\u76f4\u65b9\u56fe\u53ef\u89c6\u5316\u7f51\u7edc\u7edf\u8ba1\u6570\u636e\u3002<\/p>\n<p><strong>2.\u8fc7\u6ee4\/\u91c7\u6837(Filtering\/Sampling)<\/strong><\/p>\n<p>\u8fc7\u6ee4\u548c\u91c7\u6837\u4e24\u79cd\u65b9\u6cd5\u7684\u5185\u6db5\u662f\u4e00\u81f4\u7684\uff0c\u90fd\u662f\u5728\u539f\u6709\u6570\u636e\u96c6\u4e0a\u9009\u62e9\u4e00\u4e2a\u5b50\u96c6\uff0c\u4ee5\u6ee1\u8db3\u6570\u636e\u7cbe\u7b80\u7684\u8981\u6c42\u3002\u5e38\u7528\u7684\u9009\u62e9\u96c6\u62bd\u53d6\u65b9\u6cd5\u5305\u62ec\u7b80\u5355\u968f\u673a\u91c7\u6837\u3001\u7cfb\u7edf\u62bd\u6837\uff08\u7b49\u8ddd\u62bd\u6837\uff09\u3001\u5206\u5c42\u62bd\u6837\u7b49\u3002<\/p>\n<p>\u6b64\u7c7b\u65b9\u6cd5\u6700\u5927\u7684\u6311\u6218\u662f\u5728\u9009\u62e9\u96c6\u89c4\u6a21\u548c\u6570\u636e\u4e22\u5931\u4e4b\u95f4\u5bfb\u627e\u5e73\u8861\u70b9\u3002\u56e0\u6b64\u5148\u62bd\u53d6\u6570\u636e\u7279\u5f81\uff0c\u518d\u6839\u636e\u8fd9\u4e9b\u7279\u5f81\u8fdb\u884c\u91c7\u6837\uff0c\u662f\u6b64\u7c7b\u65b9\u6cd5\u7684\u53d1\u5c55\u8d8b\u52bf\u3002\u4f8b\u5982\u5728\u672c\u4eba\u4e4b\u524d\u7684\u535a\u5ba2\u4e2d\uff0c\u4ecb\u7ecd\u7684<a href=\"http:\/\/www.storagelab.org.cn\/zhangdi\/2019\/02\/13\/\u4fe1\u606f\u71b5\u5e94\u7528\u968f\u7b141\uff1a\u5229\u7528\u6761\u4ef6\u71b5\u7b5b\u9009\u6570\u636e\u7ef4\u5ea6\/\">\u201c\u5229\u7528\u6761\u4ef6\u71b5\u7b5b\u9009\u6570\u636e\u7ef4\u5ea6\u201d<\/a>\uff0c\u5c31\u662f\u4ee5\u6761\u4ef6\u71b5\u4e3a\u6570\u636e\u7279\u5f81\u8fdb\u884c\u6570\u636e\u7ef4\u5ea6\u8fc7\u6ee4\/\u91c7\u6837\u7684\u65b9\u6848\u3002<\/p>\n<p><strong>3.\u5206\u7ec4\u805a\u5408\uff08Binned Aggregation\uff09<\/strong>\uff1a<\/p>\n<p>\u5206\u7ec4\u805a\u5408\u662f\u5c06\u6570\u636e\u96c6\u4e2d\u7684\u6570\u636e\u9879\u5212\u5206\u4e3a\u591a\u4e2a\u5206\u7ec4\uff0c\u7136\u540e\u901a\u8fc7\u5b9a\u4e49\u5728\u5206\u7ec4\u4e0a\u7684\u7edf\u8ba1\u5c5e\u6027\uff08\u5982\u6570\u636e\u5bc6\u5ea6\u3001\u5e73\u5747\u503c\u7b49\uff09\uff0c\u5c06\u5bf9\u6bcf\u4e2a\u5177\u4f53\u6570\u636e\u6837\u672c\u7684\u8003\u5bdf\uff0c\u7b80\u5316\u4e3a\u5bf9\u5206\u7ec4\uff08bin\uff09\u7684\u8003\u5bdf<sup>[66]<\/sup>\u3002\u7ecf\u8fc7\u5206\u7ec4\u805a\u5408\u7684\u6570\u636e\u53ef\u4ee5\u88ab\u76f4\u63a5\u5e94\u7528\u4e8e\u53ef\u89c6\u5316\uff0c\u4f8b\u5982\u76f4\u65b9\u56fe\uff08histograms\uff09<sup>[67]<\/sup>\u548c\u70ed\u529b\u56fe(heatmaps)<sup>[68]<\/sup>\u662f\u5178\u578b\u76841\u7ef4\u548c2\u7ef4\u7684\u5206\u7ec4\u6570\u636e\u53ef\u89c6\u5316\u5448\u73b0\u65b9\u6848\u3002<\/p>\n<p>\u8fc7\u6ee4\u548c\u62bd\u6837\u4f1a\u4e22\u5931\u79bb\u7fa4\u503c\uff0c\u6a21\u578b\u62df\u5408\u53ea\u9488\u5bf9\u7279\u5b9a\u7684\u5e94\u7528\u573a\u5408\u3002\u4e0e\u4e4b\u76f8\u6bd4\uff0c\u5206\u7ec4\u805a\u5408\u7684\u6700\u5927\u4f18\u70b9\u662f\u4fdd\u7559\u4e86\u5168\u5c40\u6a21\u5f0f\uff08\u5982\u5bc6\u5ea6\uff09\u548c\u5c40\u90e8\u7279\u5f81\uff08\u5982\u79bb\u7fa4\u503c\uff09\uff0c\u5e76\u4e14\u5141\u8bb8\u9009\u62e9\u4e0d\u540c\u7684\u5206\u7ec4\u5927\u5c0f\u4ee5\u5efa\u7acb\u591a\u4e2a\u5206\u7ec4\u7c92\u5ea6\u7b49\u7ea7\u3002\u4f8b\u5982\uff0c\u65f6\u5e8f\u6570\u636e\u53ef\u4ee5\u6309\u7167\u5e74\u3001\u6708\u3001\u65e5\u8fdb\u884c\u5206\u7ec4\uff0c\u5730\u7406\u7a7a\u95f4\u6570\u636e\u53ef\u4ee5\u6309\u7167\u7701\u3001\u53bf\u3001\u4e61\u8fdb\u884c\u5206\u7ec4\u3002<\/p>\n<p>\u4ee5\u4e0b\u7b80\u4ecb\u5bf9\u4e00\u4e2a\u9ad8\u7ef4\u6570\u636e\u96c6\u8fdb\u884c\u5206\u7ec4\u805a\u5408\u7684\u57fa\u672c\u8fc7\u7a0b\uff1a<\/p>\n<p>\uff081\uff09\u786e\u5b9a\u6bcf\u4e2a\u6570\u636e\u7ef4\u5ea6\u7684\u57fa\u672c\u7c7b\u578b\uff0c\u5e76\u5c06\u6570\u636e\u6309\u5347\u5e8f\u6216\u964d\u5e8f\u6392\u5217\u3002\u6570\u636e\u7ef4\u5ea6\u7684\u57fa\u672c\u7c7b\u578b\u6709\u6570\u503c\u578b\u6570\u636e\u548c\u7c7b\u540d\u6570\u636e\u3002\u4e00\u822c\u6765\u8bf4\u6570\u503c\u578b\u6570\u636e\u53ef\u4ee5\u501f\u52a9\u76f4\u65b9\u56fe\u5212\u5206bin\u7684\u65b9\u6cd5\u5904\u7406\uff0c\u7c7b\u540d\u6570\u636e\u53ef\u4ee5\u8f6c\u6362\u4e3a\u6570\u503c\u578b\u6570\u636e\u4ee5\u540e\u5904\u7406\uff08\u4f8b\u5982\u6027\u522b\u53ef\u4ee5\u6309\u7537=1\uff0c\u5973=0\u6765\u8f6c\u6362\uff09\u3002\u5c06\u6570\u636e\u6309\u5347\u5e8f\u6216\u964d\u5e8f\u6392\u5217\u662f\u4e3a\u4e86\u4e4b\u540e\u8fdb\u884c\u5206\u7ec4\u548c\u8ba1\u7b97\u5206\u7ec4\u5bf9\u5e94\u7684\u7edf\u8ba1\u503c\u66f4\u8f7b\u677e\u3002<\/p>\n<p>\uff082\uff09\u786e\u5b9a\u5206\u7ec4\u7ea7\u522b\uff08grained level of bin\uff09\u548c\u6bcf\u4e2a\u7ea7\u522b\u4e0b\u5206\u7ec4\u7684\u4e2a\u6570(number of bins)\u3002\u8fd9\u901a\u5e38\u6309\u7167\u4e1a\u52a1\u9700\u6c42\u4eba\u4e3a\u6307\u5b9a\u3002\u4f8b\u5982\u5bf9\u4e8e\u7b80\u5355\u6570\u636e\uff0c\u53ef\u4ee5\u91c7\u7528\u5e73\u65b9\u6839\u9009\u62e9\u6cd5\uff0c\u5047\u8bbe\u6709n\u4e2a\u6837\u672c\uff0c\u53ea\u505a\u4e00\u4e2a\u5206\u7ec4\u7ea7\u522b\uff0c\u8fd9\u4e2a\u5206\u7ec4\u7ea7\u522b\u4e0b\u5305\u542bk\u4e2a\u5206\u7ec4\uff0ck\u53ef\u4ee5\u7528\u5982\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large\" src=\"https:\/\/wikimedia.org\/api\/rest_v1\/media\/math\/render\/svg\/5234a4828c2eb281662ea74bb909395899b3d76a\" width=\"91\" height=\"27\" \/>\u3002<\/p>\n<p>\u53c8\u5982\uff0c\u5bf9\u4e8e\u6309\u79d2\u7edf\u8ba1\u7684\u7f51\u7edc\u6d41\u91cf\u6570\u636e\uff0c\u53ef\u4ee5\u6309\u7167\u79d2\u3001\u5206\u3001\u5c0f\u65f6\u3001\u5929\u56db\u4e2a\u5206\u7ec4\u7ea7\u522b\u8fdb\u884c\u5206\u7ec4\u805a\u5408\u3002\u5047\u8bbe\u6837\u672c\u603b\u6570\u4e3an\uff0c\u5219\u5176\u4e2d\u201c\u79d2\u201d\u8fd9\u4e2a\u7ea7\u522b\u4e0b\u5206\u7ec4\u4e2a\u6570\u5c31\u662fn\uff0c\u201c\u5206\u201d\u7684\u5206\u7ec4\u4e2a\u6570\u662f\u6837n\/60\uff0c\u201c\u5c0f\u65f6\u201d\u7684\u5206\u7ec4\u4e2a\u6570\u5c31\u662fn\/3600,\u00a0\u201c\u5929\u201d\u7684\u5206\u7ec4\u4e2a\u6570\u5c31\u662fn\/86400\u3002<\/p>\n<p>\u53c8\u6bd4\u5982\u5bf9\u4e8e\u5e74\u9f84\u8fd9\u4e00\u6570\u503c\u578b\u6570\u636e\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5212\u5206\u4e3a\u4e24\u4e2a\u5206\u7ec4\u7ea7\u522b\u3002\u5728\u7b2c\u4e00\u4e2a\u5206\u7ec4\u7ea7\u522b\u4e0b\uff0c\u5206\u4e3a\u4e24\u7ec4\uff1a\u672a\u6210\u5e74\u4eba\uff080-18\uff09\uff0c\u6210\u5e74\u4eba\uff0818+\uff09\u3002\u5728\u7b2c\u4e8c\u4e2a\u5206\u7ec4\u7ea7\u522b\u4e0b\uff0c\u672a\u6210\u5e74\u4eba\u53c8\u53ef\u4ee5\u5212\u5206\u4e3a\u513f\u7ae5\uff080-12\uff09\u3001\u5c11\u5e74\uff0812-18\uff09\u3002\u6210\u5e74\u4eba\u53ef\u4ee5\u5212\u5206\u4e3a\u9752\u5e74\uff0818-35\uff09\u3001\u4e2d\u5e74\uff0835-65\uff09\u3001\u8001\u5e74\uff0865+\uff09\uff0c\u603b\u8ba15\u4e2a\u5206\u7ec4\u3002<\/p>\n<p>\uff083\uff09\u8ba1\u7b97\u6bcf\u4e2a\u5206\u7ec4\u5bf9\u5e94\u7684\u7edf\u8ba1\u503c\u3002\u8fd9\u4e2a\u7edf\u8ba1\u503c\u53ef\u4ee5\u662f\u9891\u6570\u3001\u9891\u7387\uff08\u4e5f\u79f0\u5bc6\u5ea6\uff09\u3001\u5e73\u5747\u503c\u7b49\u3002\u4ece\u800c\u5c06\u5bf9\u6bcf\u4e2a\u5177\u4f53\u6570\u636e\u6837\u672c\u7684\u8003\u5bdf\uff0c\u7b80\u5316\u4e3a\u5bf9\u5206\u7ec4\u7684\u8003\u5bdf\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u7f16\u7a0b\u4e0a\uff0c<a href=\"https:\/\/www.jianshu.com\/p\/fc52d6468304\">\u5206\u7ec4\u805a\u5408\u53ef\u4ee5\u4f7f\u7528python\u7684pandas\u7c7b\u5e93\u7684groupby\u51fd\u6570\u3001transform\u51fd\u6570\u548capply\u51fd\u6570\u6765\u5b8c\u6210<\/a>\uff0c\u5f53\u7136\u5728\u7ec6\u8282\u4e0a\u53ef\u80fd\u8fd8\u8981\u4f7f\u7528\u5176\u4ed6\u51fd\u6570\u548c\u6a21\u578b\u62df\u5408\u65b9\u6cd5\u7b49\u3002<\/p>\n<p><strong>4.\u00a0\u964d\u7ef4\uff08Dimension Reduction\uff09<\/strong><\/p>\n<p>\u901a\u8fc7\u7ebf\u6027\u6216\u975e\u7ebf\u6027\u53d8\u6362\u5c06\u591a\u7ef4\u6570\u636e\u6295\u5f71\uff08project\uff09\u6216\u5d4c\u5165\uff08embed\uff09\u81f3\u4f4e\u7ef4\u7a7a\u95f4\uff08\u901a\u5e38\u662f2\u7ef4\u62163\u7ef4\uff09\uff0c\u5e76\u4fdd\u6301\u6570\u636e\u5728\u591a\u5143\u7a7a\u95f4\u4e2d\u7684\u7279\u5f81\uff0c\u8fd9\u79cd\u7b56\u7565\u79f0\u4e4b\u4e3a\u964d\u7ef4\uff0c\u6216\u8005\u7ffb\u8bd1\u4e3a\u7ef4\u5ea6\u7ea6\u7b80\u3002<\/p>\n<figure style=\"width: 1094px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gss2.bdstatic.com\/-fo3dSag_xI4khGkpoWK1HF6hhy\/baike\/c0%3Dbaike150%2C5%2C5%2C150%2C50\/sign=f43784520224ab18f41be96554938da8\/8b82b9014a90f603d5dcfd333212b31bb051ed52.jpg\" alt=\"\" width=\"1094\" height=\"700\" \/><figcaption class=\"wp-caption-text\">\u4e3a\u4e86\u4fbf\u4e8e\u7406\u89e3\u964d\u7ef4\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u7b80\u5355\u76f4\u89c2\u5730\u62ff3\u7ef4\u7acb\u4f53\u6295\u5f71\uff08project\uff09\u52302\u7ef4\u5e73\u9762\u5f62\u6210\u5e73\u9762\u56fe\u7684\u4f8b\u5b50\u6765\u5e2e\u52a9\u7406\u89e3\u3002\u5982\u56fe\u6240\u793a\uff0c\u4e00\u4e2a\u4e09\u7ef4\u5de5\u4ef6\uff0c\u4ece\u4e0d\u540c\u89d2\u5ea6\u8fdb\u884c\u6295\u5f71\uff0c\u5176\u7ed3\u679c\u90fd\u662f\u4e0d\u4e00\u6837\u7684\u3002\u8fd9\u4e2a\u4f8b\u5b50\u540c\u6837\u53ef\u4ee5\u89e3\u91ca\u4e09\u7ef4\u6570\u636e\u901a\u8fc7\u964d\u7ef4\u65b9\u6cd5\u53d8\u6362\u5230\u4e8c\u7ef4\uff0c\u5fc5\u7136\u4f1a\u635f\u5931\u4e00\u90e8\u5206\u6570\u636e\u7279\u5f81\uff0c\u540c\u65f6\u4f1a\u56e0\u4e3a\u964d\u7ef4\u65b9\u6cd5\u7684\u4e0d\u540c\u800c\u5bfc\u81f4\u7684\u964d\u7ef4\u7ed3\u679c\u7684\u4e0d\u540c\u3002<\/figcaption><\/figure>\n<p>\u6211\u4eec\u4f1a\u53d1\u73b0\u964d\u7ef4\u65b9\u6cd5\u6709\u4e24\u65b9\u9762\u7684\u7279\u8d28\uff1a\u5176\u4e00\uff0c\u6839\u636e\u6295\u5f71\/\u5d4c\u5165\u7684\u65b9\u5f0f\u4e0d\u540c\uff0c\u6700\u540e\u5448\u73b0\u7684\u7ed3\u679c\u4e5f\u4e0d\u540c\u3002\u4f8b\u5982\u4e00\u4e2a3D\u56fe\u5f62\u7684\u9876\u89c6\u56fe\u3001\u4fa7\u89c6\u56fe\u548c\u4fef\u89c6\u56fe\u53ef\u80fd\u5b8c\u5168\u4e0d\u540c\u3002\u8fd9\u5c31\u610f\u5473\u7740\u5e94\u7528\u4f55\u79cd\u964d\u7ef4\u65b9\u6cd5\uff0c\u662f\u4e0e\u9700\u6c42\u3001\u6570\u636e\u7279\u5f81\u76f8\u5173\u7684\u3002\u5176\u4e8c\uff0c\u964d\u7ef4\u65b9\u6cd5\u5bfc\u81f4\u4e86\u6570\u636e\u7279\u5f81\u53d1\u751f\u4e86\u6839\u672c\u6027\u7684\u53d8\u5316\uff0c\u539f\u59cb\u7684\u7279\u5f81\u6d88\u5931\u4e86\uff08\u867d\u7136\u65b0\u7684\u7279\u5f81\u4e5f\u4fdd\u6301\u4e86\u539f\u7279\u5f81\u7684\u4e00\u4e9b\u6027\u8d28\uff09\u3002\u4e0e\u4e4b\u76f8\u6bd4\uff0c\u8fc7\u6ee4\/\u91c7\u6837\u65b9\u6cd5\u5e76\u6ca1\u6709\u6539\u53d8\u6570\u636e\u7279\u5f81\uff0c\u53ea\u662f\u5728\u539f\u6709\u6570\u636e\u96c6\u4e0a\u627e\u4e86\u4e00\u4e2a\u5b50\u96c6\u3002<\/p>\n<p>\u6b63\u56e0\u4e3a\u964d\u7ef4\u65b9\u6cd5\u5b58\u5728\u201c\u6ca1\u6709\u6700\u597d\uff0c\u53ea\u6709\u6700\u5408\u9002\u201d\u7684\u7279\u70b9\uff0c\u6240\u4ee5\u76f8\u5173\u7684\u7b97\u6cd5\u79cd\u7c7b\u975e\u5e38\u591a\u3002\u4e3a\u4e86\u4fbf\u4e8e\u4e86\u89e3\uff0c\u4ee5\u4e0b\u63d0\u4f9b\u4e86\u51e0\u4e2a\u5206\u7c7b\u56fe\uff1a<\/p>\n<figure style=\"width: 934px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/zhangdi.dengxinbo.cn\/Taxonomy%20of%20dimensionality%20reduction%20techniques.png\" alt=\"\" width=\"934\" height=\"360\" \/><figcaption class=\"wp-caption-text\">\uff081\uff09\u5bf9\u964d\u7ef4\u65b9\u6cd5\u7684\u5206\u7c7b\u56fe\uff0c\u4e3b\u8981\u6839\u636e\u6620\u5c04\u51fd\u6570\u51f8\u4f18\u5316\u4e0e\u5426\u8fdb\u884c\u5206\u7c7b\uff0c\u6458\u81eahttps:\/\/lvdmaaten.github.io\/publications\/papers\/TR_Dimensionality_Reduction_Review_2009.pdf<\/figcaption><\/figure>\n<figure style=\"width: 1935px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/zhangdi.dengxinbo.cn\/%E9%99%8D%E7%BB%B4%E6%96%B9%E6%B3%95%E5%88%86%E7%B1%BB.png\" alt=\"\" width=\"1935\" height=\"782\" \/><figcaption class=\"wp-caption-text\">\uff082\uff09\u6211\u6839\u636e\u7f51\u4e0a\u8d44\u6599\u8865\u5145\u7684\u964d\u7ef4\u65b9\u6cd5\u5206\u7c7b\u56fe\uff0c\u4e3b\u8981\u6839\u636e\u6620\u5c04\u51fd\u6570\u7ebf\u6027\u4e0e\u5426\u8fdb\u884c\u5206\u7c7b<\/figcaption><\/figure>\n<p>\u9664\u6b64\u4ee5\u5916\uff0c\u6309\u7167\u662f\u5426\u6709\u4f7f\u7528\u6837\u672c\u7684\u6807\u7b7e\u503c\uff0c\u53ef\u4ee5\u5c06\u964d\u7ef4\u7b97\u6cd5\u5206\u4e3a\u6709\u76d1\u7763\u964d\u7ef4\u548c\u65e0\u76d1\u7763\u964d\u7ef4\u3002<\/p>\n<p>\u5173\u4e8e\u964d\u7ef4\u65b9\u6cd5\u7684\u9009\u62e9\uff0c\u4e0e\u4efb\u52a1\u9700\u6c42\u548c\u6570\u636e\u7279\u5f81\u6709\u5173\u3002\u4f8b\u5982\u4e00\u4e2a\u6700\u5e38\u89c1\u7684\u6848\u4f8b\uff1a\u4efb\u52a1\u9700\u6c42\u662f\u628a100\u7ef4\u7684\u6570\u636e\u964d\u4f4e\u523020\u7ef4\u7136\u540e\u505a\u673a\u5668\u5b66\u4e60\u6216\u8005\u6570\u636e\u5206\u6790\uff0c\u6570\u636e\u7279\u5f81\u4e0a\u8bb8\u591a\u6570\u636e\u7ef4\u5ea6\u4e4b\u95f4\u6709\u5e26\u6709\u5178\u578b\u7684\u7ebf\u6027\u76f8\u5173\u6027\uff08\u6bd4\u5982\u603b\u6210\u7ee9\u7ef4\u5ea6\u7b49\u4e8e\u5e73\u65f6\u6210\u7ee9\u548c\u671f\u672b\u6210\u7ee9\u4e24\u4e2a\u7ef4\u5ea6\u4e4b\u548c\uff09\uff0c\u90a3\u4e48\u7528\u6700\u7b80\u5355\u7684PCA\u7b97\u6cd5\u5c31\u597d\u3002\u5982\u679c\u4efb\u52a1\u9700\u6c42\u662f\u8981\u76f4\u89c2\u5730\u4e86\u89e3\u4e00\u4e2a100\u7ef4\u6570\u636e\u96c6\u7684\u7ed3\u6784\uff0c\u9700\u8981\u5c06\u8fd9\u4e2a\u6570\u636e\u96c6\u6295\u5f71\u5230\u4eba\u7c7b\u80fd\u770b\u61c2\u76842\u7ef4\u5e73\u9762\u4e0a\uff0c\u4e86\u89e3\u6570\u636e\u5927\u81f4\u805a\u6210\u51e0\u56e2\uff0c\u54ea\u4e9b\u6570\u636e\u805a\u6210\u4e00\u56e2\uff0c\u54ea\u4e9b\u56e2\u6bd4\u8f83\u8fd1\u7b49\u7b49\uff0c\u4ece\u800c\u9a8c\u8bc1\u5404\u79cd\u4f5c\u7528\u5728\u8fd9\u4e2a\u6570\u636e\u96c6\u4e0a\u7684\u7b97\u6cd5\u6709\u6548\u6027\uff0c\u90a3\u4e48\uff0c\u7528\u73b0\u5728\u7279\u522b\u6d41\u884c\u7684\u6d41\u5f62\u5b66\u4e60\u964d\u7ef4\u65b9\u6cd5t-SNE\uff08\u6216\u5b83\u7684\u540e\u7ee7\u7b97\u6cd5LargeVis\uff09\u633a\u597d\u3002\u4f8b\u5982\u4e0b\u9762\u8fd9\u7bc7\u6587\u7ae0\uff1a<a href=\"http:\/\/t-sne\u6570\u636e\u53ef\u89c6\u5316\u7b97\u6cd5\u7684\u4f5c\u7528\u662f\u5565\uff1f\u4e3a\u4e86\u964d\u7ef4\u8fd8\u662f\u8ba4\u8bc6\u6570\u636e\uff1f - Mon1st\u7684\u56de\u7b54 - \u77e5\u4e4e https:\/\/www.zhihu.com\/question\/52022955\/answer\/128719412\">\u5982\u4f55\u7528t-SNE\u5206\u6790\u751f\u7269\u884c\u4e3a\u5b66\u4e0a\u65e0\u6cd5\u7cbe\u786e\u6d4b\u91cf\u7684\u6709\u8da3\u884c\u4e3a\u3002<\/a><\/p>\n<figure style=\"width: 1805px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/zhangdi.dengxinbo.cn\/swiss_roll_by_pca.png\" alt=\"\" width=\"1805\" height=\"1008\" \/><figcaption class=\"wp-caption-text\">\u7528\u51e0\u4e2a\u56fe\u7b80\u5355\u63cf\u8ff0\u4e00\u4e0b\u73b0\u5728\u5f88\u706b\u7684\u6d41\u5f62\u5b66\u4e60\u964d\u7ef4\u65b9\u6cd5\u3002\u5982\u56fe\u6240\u793a\u662f\u6d41\u5f62\u5b66\u4e60\u7684\u4e00\u4e2a\u7ecf\u5178\u4f8b\u5b50\u745e\u58eb\u5377swiss roll, \u8be5\u4e09\u7ef4\u6570\u636e\u96c6\u5982\u679c\u76f4\u63a5\u4f7f\u7528PCA\u964d\u7ef4\u65b9\u6cd5\u6295\u5f71\u5230\u4e8c\u7ef4\u5e73\u9762\u4e0a\uff0c\u5176\u5b9e\u4f1a\u4ee4\u4eba\u5bf9\u5b9e\u9645\u7684\u6570\u636e\u7ed3\u6784\u6709\u5f88\u591a\u8bef\u89e3\u3002\u4f8b\u5982\u6df1\u84dd\u8272\u7684\u70b9\u548c\u6df1\u7ea2\u8272\u7684\u70b9\uff0c\u4ece\u6d41\u5f62\u4e0a\u770b\u662f\u76f8\u8ddd\u5f88\u8fdc\u7684\u70b9\uff0c\u4f46\u662f\u76f4\u63a5\u6295\u5f71\u5230\u6b27\u5f0f\u7a7a\u95f4\u4e2d\u770b\u8d77\u6765\u5374\u76f8\u8ddd\u5f88\u8fd1\uff0c\u4e0d\u80fd\u5f88\u597d\u5730\u8868\u793a\u6570\u636e\u7684\u5b9e\u9645\u7ed3\u6784\u3002\u56fe\u6458\u81ea<a href=\"http:\/\/blog.pluskid.org\/?p=533\">\u6d59\u5927\u4f55\u6653\u98de\u8001\u5e08\u7684\u6d41\u5f62\u5b66\u4e60PPT<\/a>\u3002<\/figcaption><\/figure>\n<figure style=\"width: 1614px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/zhangdi.dengxinbo.cn\/swiss_roll_by_sne.png\" alt=\"\" width=\"1614\" height=\"589\" \/><figcaption class=\"wp-caption-text\">\u5bf9\u4e8e\u8fd9\u79cd\u95ee\u9898\u7684\u4e00\u4e2a\u6bd4\u8f83\u597d\u7684\u89e3\u5c31\u662f\u4f7f\u7528\u6d41\u5f62\u5b66\u4e60\u7684\u964d\u7ef4\u65b9\u6cd5\uff0c\u4f8b\u5982t-SNE\u3002\u7b80\u5355\u5730\u8bf4\u5c31\u662f\u5c06\u6d41\u578b\u5c55\u5f00\u540e\u518d\u505a\u6295\u5f71\uff0c\u5bf9\u6570\u636e\u771f\u5b9e\u7ed3\u6784\u7684\u5c55\u793a\u4f1a\u66f4\u597d\u3002\u56fe\u6458\u81ea<a href=\"http:\/\/blog.pluskid.org\/?p=533\">\u6d59\u5927\u4f55\u6653\u98de\u8001\u5e08\u7684\u6d41\u5f62\u5b66\u4e60PPT<\/a>\u3002<\/figcaption><\/figure>\n<figure style=\"width: 1247px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large\" src=\"http:\/\/zhangdi.dengxinbo.cn\/manifold_learning.png\" width=\"1247\" height=\"737\" \/><figcaption class=\"wp-caption-text\">\u76ee\u524d\u6d41\u884c\u5b66\u4e60\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u6bcf\u4e2a\u65b9\u6cd5\u7684\u8fd0\u884c\u7ed3\u679c\u548c\u5f00\u9500\u90fd\u4e0d\u4e00\u6837\u3002\u4e0a\u56fe\u63cf\u8ff0\u4e868\u79cd\u6d41\u5f62\u5b66\u4e60\u964d\u7ef4\u65b9\u6cd5\u5bf9S\u578b3\u7ef4\u6570\u636e\u505a2\u7ef4\u6295\u5f71\u7684\u7ed3\u679c\u548c\u65f6\u95f4\u5f00\u9500\u3002\u56fe\u7247\u6458\u81ea\uff1a<a href=\"https:\/\/www.biostars.org\/p\/295174\/\">Question:\u00a0Difference between tSNE and PCA analysis<\/a>\u3002\u5173\u4e8e\u76ee\u524d\u5728\u53ef\u89c6\u5316\u9886\u57df\u7279\u522b\u6d41\u884c\u7684t-SNE\u548cLargeVis\u964d\u7ef4\u7b97\u6cd5\uff0c\u8fd9\u6709\u7bc7\u6587\u7ae0\u8bb2\u5f97\u4e0d\u9519\uff1a<a href=\"http:\/\/bindog.github.io\/blog\/2016\/06\/04\/from-sne-to-tsne-to-largevis\/\">\u4eceSNE\u5230t-SNE\u518d\u5230LargeVis<\/a><\/figcaption><\/figure>\n<p>\u603b\u800c\u8a00\u4e4b\uff0c\u964d\u7ef4\u662f\u4e00\u4e2a\u5e7f\u9614\u7684\u7814\u7a76\u9886\u57df\uff0c\u4e0d\u4ec5\u5e94\u7528\u5728\u6570\u636e\u53ef\u89c6\u5316\uff0c\u4e5f\u7ecf\u5e38\u88ab\u5f52\u5165\u6570\u636e\u6316\u6398\u3001\u673a\u5668\u5b66\u4e60\u3001\u6570\u636e\u5206\u6790\u9886\u57df\uff0c\u4e2d\u4f5c\u4e3a\u6570\u636e\u5904\u7406\u7684\u4e00\u4e2a\u73af\u8282\u6216\u65b9\u6cd5\u3002\u788d\u4e8e\u65f6\u95f4\u6709\u9650\uff0c\u4e0d\u80fd\u5c55\u5f00\u53d9\u8ff0\uff0c\u6743\u5f53\u629b\u7816\u5f15\u7389\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9ad8\u7ef4\u591a\u5143\u6570\u636e\uff08Multidimensio<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[77,110,113,122,130,157,159,161],"class_list":["post-2068","post","type-post","status-publish","format-standard","hentry","category-data-visualization","tag-77","tag-110","tag-113","tag-122","tag-130","tag-157","tag-159","tag-161"],"_links":{"self":[{"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/posts\/2068","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/comments?post=2068"}],"version-history":[{"count":0,"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/posts\/2068\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/media?parent=2068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/categories?post=2068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.divis.cn\/index.php\/wp-json\/wp\/v2\/tags?post=2068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}