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href=\"https:\/\/www.sas.com\/en_us\/insights\/analytics\/deep-learning.html\">\u6df1\u5ea6\u5b66\u4e60<\/a>\u7684\u6700\u65b0\u8fdb\u5c55\uff0c\u5f3a\u5316\u5b66\u4e60\u5f15\u8d77\u4e86\u5e7f\u6cdb\u5173\u6ce8\uff0c\u56e0\u4e3a\u5b83\u5728\u6e38\u620f\u3001\u673a\u5668\u4eba\u548c\u63a7\u5236\u7b49\u5e7f\u6cdb\u5e94\u7528\u4e2d\u8868\u73b0\u51fa\u8272\u3002\u8981\u4e86\u89e3 Deep-Q \u548c Fitted-Q \u7f51\u7edc\u7b49\u5f3a\u5316\u5b66\u4e60\u6a21\u578b\u7684\u5b9e\u9645\u4f5c\u7528\uff0c\u8bf7\u67e5\u770b<a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/2021\/03\/18\/reinforcement-learning-deep-q-networks\/\">\u672c\u6587<\/a>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u9009\u62e9\u7b97\u6cd5\u65f6\u7684\u6ce8\u610f\u4e8b\u9879<\/strong><\/h2>\n\n\n\n<p>\u9009\u62e9\u7b97\u6cd5\u65f6\uff0c\u8bf7\u52a1\u5fc5\u8003\u8651\u4ee5\u4e0b\u65b9\u9762\uff1a\u51c6\u786e\u6027\u3001\u8bad\u7ec3\u65f6\u95f4\u548c\u6613\u7528\u6027\u3002\u8bb8\u591a\u7528\u6237\u5c06\u51c6\u786e\u6027\u653e\u5728\u9996\u4f4d\uff0c\u800c\u521d\u5b66\u8005\u5219\u503e\u5411\u4e8e\u5173\u6ce8\u4ed6\u4eec\u6700\u4e86\u89e3\u7684\u7b97\u6cd5\u3002<\/p>\n\n\n\n<p>\u5f53\u5448\u73b0\u6570\u636e\u96c6\u65f6\uff0c\u9996\u5148\u8981\u8003\u8651\u7684\u662f\u5982\u4f55\u83b7\u5f97\u7ed3\u679c\uff0c\u65e0\u8bba\u7ed3\u679c\u770b\u8d77\u6765\u5982\u4f55\u3002\u521d\u5b66\u8005\u503e\u5411\u4e8e\u9009\u62e9\u6613\u4e8e\u5b9e\u73b0\u4e14\u53ef\u4ee5\u5feb\u901f\u83b7\u5f97\u7ed3\u679c\u7684\u7b97\u6cd5\u3002\u53ea\u8981\u8fd9\u53ea\u662f\u6d41\u7a0b\u7684\u7b2c\u4e00\u6b65\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5c31\u5f88\u597d\u3002\u4e00\u65e6\u4f60\u83b7\u5f97\u4e86\u4e00\u4e9b\u7ed3\u679c\u5e76\u719f\u6089\u4e86\u6570\u636e\uff0c\u4f60\u53ef\u80fd\u4f1a\u82b1\u66f4\u591a\u65f6\u95f4\u4f7f\u7528\u66f4\u590d\u6742\u7684\u7b97\u6cd5\u6765\u52a0\u5f3a\u5bf9\u6570\u636e\u7684\u7406\u89e3\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u6539\u5584\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u5373\u4f7f\u5728\u8fd9\u4e2a\u9636\u6bb5\uff0c\u6700\u597d\u7684\u7b97\u6cd5\u4e5f\u53ef\u80fd\u4e0d\u662f\u8fbe\u5230\u62a5\u544a\u7684\u6700\u9ad8\u51c6\u786e\u5ea6\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u7b97\u6cd5\u901a\u5e38\u9700\u8981\u4ed4\u7ec6\u8c03\u6574\u548c\u5927\u91cf\u8bad\u7ec3\u624d\u80fd\u83b7\u5f97\u6700\u4f73\u7684\u6027\u80fd\u3002<\/p>\n\n\n\n<h2 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href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/2020\/12\/09\/machine-learning-algorithm-use\/logisticregresion-2\/\"><\/a>\u903b\u8f91\u56de\u5f52<\/p>\n\n\n\n<p>\u7ebf\u6027\u56de\u5f52\u662f\u4e00\u79cd\u5bf9\u8fde\u7eed\u56e0\u53d8\u91cf\u4e4b\u95f4\u7684\u5173\u7cfb\u8fdb\u884c\u5efa\u6a21\u7684\u65b9\u6cd5\u662f\u662f\u4ee5\u53ca\u4e00\u4e2a\u6216\u591a\u4e2a\u9884\u6d4b\u53d8\u91cfX\ud835\udc4b\u3002 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class=\"wp-block-heading\"><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u7ebf\u6027SVM\u548c\u6838SVM<\/strong><\/h3>\n\n\n\n<p>\u6838\u6280\u5de7\u7528\u4e8e\u5c06\u975e\u7ebf\u6027\u53ef\u5206\u79bb\u51fd\u6570\u6620\u5c04\u5230\u66f4\u9ad8\u7ef4\u5ea6\u7684\u7ebf\u6027\u53ef\u5206\u79bb\u51fd\u6570\u3002\u652f\u6301\u5411\u91cf\u673a (SVM) \u8bad\u7ec3\u7b97\u6cd5\u627e\u5230\u7531\u6cd5\u5411\u91cf\u8868\u793a\u7684\u5206\u7c7b\u5668\u74e6\u74e6\u548c\u504f\u89c1b\ud835\udc4f\u8d85\u5e73\u9762\u3002\u8be5\u8d85\u5e73\u9762\uff08\u8fb9\u754c\uff09\u5c06\u4e0d\u540c\u7684\u7c7b\u522b\u5c3d\u53ef\u80fd\u5206\u5f00\u3002\u8be5\u95ee\u9898\u53ef\u4ee5\u8f6c\u5316\u4e3a\u7ea6\u675f\u4f18\u5316\u95ee\u9898\uff1a<\/p>\n\n\n\n<p>\u6700\u5c0f\u5316\u74e6\u987b\u9075\u5b88|&nbsp;|\u97d3|&nbsp;|\u662f\u6211\uff08\u74e6\u7535\u89c6X\u6211\u2212b&nbsp;)&nbsp;\u22651&nbsp;\uff0c\u200b\u200bi&nbsp;=&nbsp;1&nbsp;,&nbsp;\u2026&nbsp;,&nbsp;n&nbsp;\u3002\u6700\u5c0f\u5316\u74e6||\u74e6||\u987b\u9075\u5b88\u662f\u6211\uff08\u74e6\u7535\u89c6\ud835\udc4b\u6211\u2212\ud835\udc4f\uff09\u22651\uff0c\u6211=1\uff0c\u2026\uff0c\ud835\udc5b\u3002<\/p>\n\n\n\n<p>\u652f\u6301\u5411\u91cf\u673a (SVM) \u8bad\u7ec3\u7b97\u6cd5\u627e\u5230\u7531\u8d85\u5e73\u9762\u7684\u6cd5\u5411\u91cf\u548c\u504f\u5dee\u8868\u793a\u7684\u5206\u7c7b\u5668\u3002\u8be5\u8d85\u5e73\u9762\uff08\u8fb9\u754c\uff09\u5c06\u4e0d\u540c\u7684\u7c7b\u522b\u5c3d\u53ef\u80fd\u5206\u5f00\u3002\u8be5\u95ee\u9898\u53ef\u4ee5\u8f6c\u5316\u4e3a\u7ea6\u675f\u4f18\u5316\u95ee\u9898\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_1831\"><a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/kernalSVM.png\"><img decoding=\"async\" src=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/kernalSVM.png\" alt=\"\u7ebf\u6027\u548c\u6838 SVM \u56fe\u8868\" class=\"wp-image-1831\"\/><\/a><figcaption class=\"wp-element-caption\">\u6838\u6280\u5de7\u7528\u4e8e\u5c06\u975e\u7ebf\u6027\u53ef\u5206\u79bb\u51fd\u6570\u6620\u5c04\u5230\u66f4\u9ad8\u7ef4\u7684\u7ebf\u6027\u53ef\u5206\u79bb\u51fd\u6570\u3002<\/figcaption><\/figure>\n\n\n\n<p>\u5f53\u7c7b\u522b\u4e0d\u662f\u7ebf\u6027\u53ef\u5206\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u6838\u6280\u5de7\u5c06\u975e\u7ebf\u6027\u53ef\u5206\u7a7a\u95f4\u6620\u5c04\u5230\u66f4\u9ad8\u7ef4\u7684\u7ebf\u6027\u53ef\u5206\u7a7a\u95f4\u3002<\/p>\n\n\n\n<p>\u5f53\u5927\u591a\u6570\u56e0\u53d8\u91cf\u90fd\u662f\u6570\u503c\u578b\u65f6\uff0c\u903b\u8f91\u56de\u5f52\u548c SVM \u5e94\u8be5\u662f\u5206\u7c7b\u7684\u9996\u9009\u3002\u8fd9\u4e9b\u6a21\u578b\u6613\u4e8e\u5b9e\u73b0\uff0c\u53c2\u6570\u6613\u4e8e\u8c03\u6574\uff0c\u6027\u80fd\u4e5f\u76f8\u5f53\u4e0d\u9519\u3002\u6240\u4ee5\u8fd9\u4e9b\u6a21\u578b\u9002\u5408\u521d\u5b66\u8005\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u6811\u548c\u7ec4\u5408\u6811<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_1833\"><a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/decisiontree.png\"><img decoding=\"async\" src=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/decisiontree.png\" alt=\"\u9884\u6d4b\u6a21\u578b\u7684\u51b3\u7b56\u6811\u3002\" class=\"wp-image-1833\"\/><\/a><figcaption class=\"wp-element-caption\">\u9884\u6d4b\u6a21\u578b\u7684\u51b3\u7b56\u6811<\/figcaption><\/figure>\n\n\n\n<p>\u51b3\u7b56\u6811\u3001\u968f\u673a\u68ee\u6797\u548c\u68af\u5ea6\u63d0\u5347\u90fd\u662f\u57fa\u4e8e\u51b3\u7b56\u6811\u7684\u7b97\u6cd5\u3002\u51b3\u7b56\u6811\u6709\u5f88\u591a\u53d8\u4f53\uff0c\u4f46\u5b83\u4eec\u90fd\u505a\u540c\u6837\u7684\u4e8b\u60c5\u2014\u2014\u5c06\u7279\u5f81\u7a7a\u95f4\u7ec6\u5206\u4e3a\u5177\u6709\u5927\u81f4\u76f8\u540c\u6807\u7b7e\u7684\u533a\u57df\u3002\u51b3\u7b56\u6811\u6613\u4e8e\u7406\u89e3\u548c\u5b9e\u65bd\u3002\u7136\u800c\uff0c\u5f53\u6211\u4eec\u8017\u5c3d\u5206\u652f\u5e76\u6df1\u5165\u7814\u7a76\u6811\u65f6\uff0c\u5b83\u4eec\u5f80\u5f80\u4f1a\u8fc7\u5ea6\u62df\u5408\u6570\u636e\u3002\u968f\u673a\u68ee\u6797\u548c\u68af\u5ea6\u63d0\u5347\u662f\u4f7f\u7528\u6811\u7b97\u6cd5\u5b9e\u73b0\u826f\u597d\u51c6\u786e\u6027\u4ee5\u53ca\u514b\u670d\u8fc7\u5ea6\u62df\u5408\u95ee\u9898\u7684\u4e24\u79cd\u6d41\u884c\u65b9\u6cd5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u795e\u7ecf\u7f51\u7edc\u548c\u6df1\u5ea6\u5b66\u4e60<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_1894\"><a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/cnn.jpg\"><img decoding=\"async\" src=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/cnn-1024x315.jpg\" alt=\"\" class=\"wp-image-1894\"\/><\/a><figcaption class=\"wp-element-caption\">\u5377\u79ef<a href=\"https:\/\/www.sas.com\/en_us\/insights\/analytics\/neural-networks.html\">\u795e\u7ecf\u7f51\u7edc<\/a>\u67b6\u6784\uff08\u56fe\u7247\u6765\u6e90\uff1a<a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Typical_cnn.png\">wikipedia creative commons<\/a>\uff09<\/figcaption><\/figure>\n\n\n\n<p>\u795e\u7ecf\u7f51\u7edc\u51ed\u501f\u5176\u5e76\u884c\u548c\u5206\u5e03\u5f0f\u5904\u7406\u80fd\u529b\u5728 1980 \u5e74\u4ee3\u4e2d\u671f\u84ec\u52c3\u53d1\u5c55\u3002\u4f46\u662f\uff0c\u8be5\u9886\u57df\u7684\u7814\u7a76\u53d7\u5230\u5e7f\u6cdb\u7528\u4e8e\u4f18\u5316\u795e\u7ecf\u7f51\u7edc\u53c2\u6570\u7684\u53cd\u5411\u4f20\u64ad\u8bad\u7ec3\u7b97\u6cd5\u7684\u65e0\u6548\u6027\u7684\u963b\u788d\u3002\u652f\u6301\u5411\u91cf\u673a (SVM) \u548c\u5176\u4ed6\u53ef\u4ee5\u901a\u8fc7\u89e3\u51b3\u51f8\u4f18\u5316\u95ee\u9898\u8f7b\u677e\u8bad\u7ec3\u7684\u7b80\u5355\u6a21\u578b\u9010\u6e10\u5728\u673a\u5668\u5b66\u4e60\u4e2d\u53d6\u4ee3\u4e86\u795e\u7ecf\u7f51\u7edc\u3002<\/p>\n\n\n\n<p>\u8fd1\u5e74\u6765\uff0c\u65e0\u76d1\u7763\u9884\u8bad\u7ec3\u548c\u9010\u5c42\u8d2a\u5a6a\u8bad\u7ec3\u7b49\u65b0\u7684\u548c\u6539\u8fdb\u7684\u8bad\u7ec3\u6280\u672f\u91cd\u65b0\u6fc0\u53d1\u4e86\u4eba\u4eec\u5bf9\u795e\u7ecf\u7f51\u7edc\u7684\u5174\u8da3\u3002\u56fe\u5f62\u5904\u7406\u5355\u5143 (GPU) \u548c\u5927\u89c4\u6a21\u5e76\u884c\u5904\u7406 (MPP) \u7b49\u8d8a\u6765\u8d8a\u5f3a\u5927\u7684\u8ba1\u7b97\u80fd\u529b\u4e5f\u523a\u6fc0\u4e86\u795e\u7ecf\u7f51\u7edc\u7684\u91cd\u65b0\u91c7\u7528\u3002\u795e\u7ecf\u7f51\u7edc\u7814\u7a76\u7684\u590d\u82cf\u50ac\u751f\u4e86\u6570\u5343\u5c42\u6a21\u578b\u7684\u53d1\u660e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_1856\"><a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/vdmml_neural.png\"><img decoding=\"async\" src=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/vdmml_neural.png\" alt=\"\u795e\u7ecf\u7f51\u7edc\" class=\"wp-image-1856\"\/><\/a><figcaption class=\"wp-element-caption\">SAS Visual Analytics \u4e2d\u7684\u795e\u7ecf\u7f51\u7edc<\/figcaption><\/figure>\n\n\n\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u6d45\u5c42\u795e\u7ecf\u7f51\u7edc\u5df2\u7ecf\u53d1\u5c55\u6210\u4e3a<a href=\"https:\/\/www.sas.com\/en_us\/insights\/analytics\/deep-learning.html\">\u6df1\u5ea6\u5b66\u4e60<\/a>\u795e\u7ecf\u7f51\u7edc\u3002\u6df1\u5ea6\u795e\u7ecf\u7f51\u7edc\u5728\u76d1\u7763\u5b66\u4e60\u65b9\u9762\u975e\u5e38\u6210\u529f\u3002\u5f53\u7528\u4e8e\u8bed\u97f3\u548c\u56fe\u50cf\u8bc6\u522b\u65f6\uff0c\u6df1\u5ea6\u5b66\u4e60\u7684\u8868\u73b0\u4e0e\u4eba\u7c7b\u4e00\u6837\u597d\uff0c\u751a\u81f3\u66f4\u597d\u3002\u5e94\u7528\u4e8e\u65e0\u76d1\u7763\u5b66\u4e60\u4efb\u52a1\uff0c\u4f8b\u5982<a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/2015\/10\/26\/principal-component-analysis-for-dimensionality-reduction\/\">\u7279\u5f81\u63d0\u53d6<\/a>\uff0c\u6df1\u5ea6\u5b66\u4e60\u8fd8\u53ef\u4ee5\u4ece\u539f\u59cb\u56fe\u50cf\u6216\u8bed\u97f3\u4e2d\u63d0\u53d6\u7279\u5f81\uff0c\u800c\u65e0\u9700\u592a\u591a\u4eba\u5de5\u5e72\u9884\u3002<\/p>\n\n\n\n<p>\u795e\u7ecf\u7f51\u7edc\u7531\u4e09\u90e8\u5206\u7ec4\u6210\uff1a\u8f93\u5165\u5c42\u3001\u9690\u85cf\u5c42\u548c\u8f93\u51fa\u5c42\u3002\u8bad\u7ec3\u6837\u672c\u5b9a\u4e49\u4e86\u8f93\u5165\u5c42\u548c\u8f93\u51fa\u5c42\u3002\u5f53\u8f93\u51fa\u5c42\u662f\u5206\u7c7b\u53d8\u91cf\u65f6\uff0c\u795e\u7ecf\u7f51\u7edc\u662f\u4e00\u79cd\u89e3\u51b3\u5206\u7c7b\u95ee\u9898\u7684\u65b9\u6cd5\u3002\u5f53\u8f93\u51fa\u5c42\u662f\u8fde\u7eed\u53d8\u91cf\u65f6\uff0c\u7f51\u7edc\u53ef\u7528\u4e8e\u8fdb\u884c\u56de\u5f52\u3002\u5f53\u8f93\u51fa\u5c42\u4e0e\u8f93\u5165\u5c42\u76f8\u540c\u65f6\uff0c\u7f51\u7edc\u53ef\u7528\u4e8e\u63d0\u53d6\u5185\u5728\u7279\u5f81\u3002\u9690\u85cf\u5c42\u7684\u6570\u91cf\u51b3\u5b9a\u4e86\u6a21\u578b\u7684\u590d\u6742\u6027\u548c\u5efa\u6a21\u80fd\u529b\u3002<a href=\"https:\/\/www.sas.com\/en_us\/insights\/analytics\/deep-learning.html\"><strong>\u6df1\u5ea6\u5b66\u4e60\uff1a<\/strong>\u5b83\u662f\u4ec0\u4e48\u4ee5\u53ca\u5b83\u4e3a\u4ec0\u4e48\u91cd\u8981<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>k-\u5747\u503c\/k-\u6a21\u5f0f\u3001GMM\uff08\u9ad8\u65af\u6df7\u5408\u6a21\u578b\uff09\u805a\u7c7b<\/strong><\/h3>\n\n\n\n<p><a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/2020\/12\/09\/machine-learning-algorithm-use\/kmeansclustering-2\/\"><\/a>K \u5747\u503c\u805a\u7c7b<a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/2020\/12\/09\/machine-learning-algorithm-use\/gaussianmixturemodel-2\/\"><\/a>\u9ad8\u65af\u6df7\u5408\u6a21\u578b<\/p>\n\n\n\n<p>Kmeans\/k-modes\uff0cGMM \u805a\u7c7b\u65e8\u5728\u5c06 n \u4e2a\u89c2\u6d4b\u503c\u5212\u5206\u4e3a k \u4e2a\u7c07\u3002K-means \u5b9a\u4e49\u4e86\u786c\u5206\u914d\uff1a\u6837\u672c\u5fc5\u987b\u4e14\u53ea\u80fd\u4e0e\u4e00\u4e2a\u7c07\u76f8\u5173\u8054\u3002\u800c GMM \u4e3a\u6bcf\u4e2a\u6837\u672c\u5b9a\u4e49\u4e86\u8f6f\u5206\u914d\u3002\u6bcf\u4e2a\u6837\u672c\u90fd\u6709\u4e0e\u6bcf\u4e2a\u7c07\u76f8\u5173\u8054\u7684\u6982\u7387\u3002\u5f53\u7c07\u6570 k \u7ed9\u5b9a\u65f6\uff0c\u8fd9\u4e24\u79cd\u7b97\u6cd5\u90fd\u8db3\u591f\u7b80\u5355\u4e14\u5feb\u901f\u5730\u8fdb\u884c\u805a\u7c7b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u6570\u636e\u5e93\u626b\u63cf<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_1837\"><a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/dbscan.jpg\"><img decoding=\"async\" src=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/dbscan.jpg\" alt=\"DBSCAN \u56fe\u793a\" class=\"wp-image-1837\"\/><\/a><figcaption class=\"wp-element-caption\">DBSCAN \u56fe\u793a\uff08\u56fe\u7247\u6765\u6e90\uff1a<a href=\"https:\/\/en.wikipedia.org\/wiki\/DBSCAN\">\u7ef4\u57fa\u767e\u79d1<\/a>\uff09<\/figcaption><\/figure>\n\n\n\n<p>\u5f53\u672a\u7ed9\u5b9a\u805a\u7c7b\u6570k\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5bc6\u5ea6\u6269\u6563\u8fde\u63a5\u6837\u672c\uff0c\u4f7f\u7528DBSCAN\uff08\u57fa\u4e8e\u5bc6\u5ea6\u7684\u7a7a\u95f4\u805a\u7c7b\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5c42\u6b21\u805a\u7c7b<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/418px-Hierarchical_clustering_simple_diagram.svg_.png\"><img decoding=\"async\" src=\"https:\/\/blogs.sas.com\/content\/subconsciousmusings\/files\/2017\/04\/418px-Hierarchical_clustering_simple_diagram.svg_-300x239.png\" alt=\"\" class=\"wp-image-1891\"\/><\/a><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u4f7f\u7528\u6811\u7ed3\u6784\uff08\u6811\u72b6\u56fe\uff09\u53ef\u89c6\u5316\u5206\u5c42\u5206\u533a\u3002\u5b83\u4e0d\u9700\u8981\u96c6\u7fa4\u6570\u91cf\u4f5c\u4e3a\u8f93\u5165\uff0c\u5e76\u4e14\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684 K \u4ee5\u4e0d\u540c\u7684\u7c92\u5ea6\u7ea7\u522b\u67e5\u770b\u5206\u533a\uff08\u5373\u53ef\u4ee5\u7ec6\u5316\/\u7c97\u5316\u96c6\u7fa4\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>PCA\u3001SVD \u548c LDA<\/strong><\/h3>\n\n\n\n<p>\u6211\u4eec\u901a\u5e38\u4e0d\u60f3\u5c06\u5927\u91cf\u7279\u5f81\u76f4\u63a5\u8f93\u5165\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\uff0c\u56e0\u4e3a\u67d0\u4e9b\u7279\u5f81\u53ef\u80fd\u4e0d\u76f8\u5173\uff0c\u6216\u8005\u201c\u56fa\u6709\u201d\u7ef4\u6570\u53ef\u80fd\u5c0f\u4e8e\u7279\u5f81\u6570\u91cf\u3002\u4e3b\u6210\u5206\u5206\u6790 (PCA)\u3001\u5947\u5f02\u503c\u5206\u89e3 (SVD) \u548c<em>&nbsp;<\/em>\u6f5c\u5728\u72c4\u5229\u514b\u96f7\u5206\u914d (&nbsp;<em>LDA<\/em>&nbsp;) \u90fd\u53ef\u7528\u4e8e\u6267\u884c\u964d\u7ef4\u3002<\/p>\n\n\n\n<p>PCA \u662f\u4e00\u79cd\u65e0\u76d1\u7763\u805a\u7c7b\u65b9\u6cd5\uff0c\u5b83\u5c06\u539f\u59cb\u6570\u636e\u7a7a\u95f4\u6620\u5c04\u5230\u8f83\u4f4e\u7ef4\u7a7a\u95f4\uff0c\u540c\u65f6\u4fdd\u7559\u5c3d\u53ef\u80fd\u591a\u7684\u4fe1\u606f\u3002PCA \u57fa\u672c\u4e0a\u662f\u627e\u5230\u4e00\u4e2a\u6700\u80fd\u4fdd\u7559\u6570\u636e\u65b9\u5dee\u7684\u5b50\u7a7a\u95f4\uff0c\u8be5\u5b50\u7a7a\u95f4\u7531\u6570\u636e\u534f\u65b9\u5dee\u77e9\u9635\u7684\u4e3b\u8981\u7279\u5f81\u5411\u91cf\u5b9a\u4e49\u3002<\/p>\n\n\n\n<p>SVD \u4e0e PCA \u76f8\u5173\uff0c\u56e0\u4e3a\u4e2d\u5fc3\u6570\u636e\u77e9\u9635\uff08\u7279\u5f81\u4e0e\u6837\u672c\uff09\u7684 SVD \u63d0\u4f9b\u4e3b\u5bfc\u5de6\u5947\u5f02\u5411\u91cf\uff0c\u8fd9\u4e9b\u5411\u91cf\u5b9a\u4e49\u4e0e PCA \u627e\u5230\u7684\u76f8\u540c\u5b50\u7a7a\u95f4\u3002\u4f46\u662f\uff0cSVD \u662f\u4e00\u79cd\u66f4\u901a\u7528\u7684\u6280\u672f\uff0c\u56e0\u4e3a\u5b83\u8fd8\u53ef\u4ee5\u5b8c\u6210 PCA \u53ef\u80fd\u65e0\u6cd5\u5b8c\u6210\u7684\u4efb\u52a1\u3002\u4f8b\u5982\uff0c\u7528\u6237\u4e0e\u7535\u5f71\u77e9\u9635\u7684 SVD \u80fd\u591f\u63d0\u53d6\u53ef\u7528\u4e8e\u63a8\u8350\u7cfb\u7edf\u7684\u7528\u6237\u8d44\u6599\u548c\u7535\u5f71\u8d44\u6599\u3002\u6b64\u5916\uff0cSVD \u8fd8\u5e7f\u6cdb\u7528\u4f5c<a href=\"https:\/\/www.sas.com\/en_us\/insights\/analytics\/what-is-natural-language-processing-nlp.html\">\u81ea\u7136\u8bed\u8a00\u5904\u7406<\/a>(NLP) \u4e2d\u7684\u4e3b\u9898\u5efa\u6a21\u5de5\u5177\uff0c\u79f0\u4e3a\u6f5c\u5728\u8bed\u4e49\u5206\u6790\u3002<\/p>\n\n\n\n<p>NLP \u4e2d\u7684\u4e00\u9879\u76f8\u5173\u6280\u672f\u662f\u6f5c\u5728\u72c4\u5229\u514b\u96f7\u5206\u914d (LDA)\u3002LDA \u662f\u4e00\u79cd\u6982\u7387\u4e3b\u9898\u6a21\u578b\uff0c\u5b83\u5c06\u6587\u6863\u5206\u89e3\u4e3a\u4e3b\u9898\uff0c\u5176\u65b9\u5f0f\u4e0e\u9ad8\u65af\u6df7\u5408\u6a21\u578b (GMM) \u5c06\u8fde\u7eed\u6570\u636e\u5206\u89e3\u4e3a\u9ad8\u65af\u5bc6\u5ea6\u7684\u65b9\u5f0f\u7c7b\u4f3c\u3002\u4e0e GMM \u4e0d\u540c\uff0cLDA \u5bf9\u79bb\u6563\u6570\u636e\uff08\u6587\u6863\u4e2d\u7684\u5355\u8bcd\uff09\u8fdb\u884c\u5efa\u6a21\uff0c\u5e76\u9650\u5236\u4e3b\u9898\u6839\u636e\u72c4\u5229\u514b\u96f7\u5206\u5e03\u8fdb\u884c<em>\u5148\u9a8c\u5206\u5e03\u3002<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>&nbsp;<\/strong><strong>\u7ed3\u8bba<\/strong><strong>\u200b<\/strong><\/h2>\n\n\n\n<p>\u8fd9\u662f\u6613\u4e8e\u9075\u5faa\u7684\u5de5\u4f5c\u6d41\u7a0b\u3002\u5c1d\u8bd5\u89e3\u51b3\u65b0\u95ee\u9898\u65f6\u9700\u8981\u6ce8\u610f\u7684\u4fe1\u606f\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u4e49\u95ee\u9898\u3002\u4f60\u60f3\u89e3\u51b3\u4ec0\u4e48\u95ee\u9898\uff1f<\/li>\n\n\n\n<li>\u4ece\u7b80\u5355\u5f00\u59cb\u3002\u719f\u6089\u6570\u636e\u548c\u57fa\u7ebf\u7ed3\u679c\u3002<\/li>\n\n\n\n<li>\u7136\u540e\u5c1d\u8bd5\u4e00\u4e9b\u66f4\u590d\u6742\u7684\u4e8b\u60c5\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8be5\u8d44\u6e90\u4e3b\u8981\u9488\u5bf9\u6709\u5174\u8da3\u8bc6\u522b\u548c\u5e94\u7528\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u6765\u89e3\u51b3\u5176\u611f\u5174\u8da3\u7684\u95ee\u9898\u7684\u521d\u7ea7\u5230\u4e2d\u7ea7\u6570\u636e\u79d1\u5b66\u5bb6\u6216\u5206\u6790\u5e08\u3002 \u5f53\u9762\u5bf9\u5404\u79cd\u5404\u6837 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-800","post","type-post","status-publish","format-standard","hentry","category-32"],"blocksy_meta":"","_links":{"self":[{"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/posts\/800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/comments?post=800"}],"version-history":[{"count":1,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/posts\/800\/revisions"}],"predecessor-version":[{"id":801,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/posts\/800\/revisions\/801"}],"wp:attachment":[{"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/media?parent=800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/categories?post=800"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ai.gitpp.com\/index.php\/wp-json\/wp\/v2\/tags?post=800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}