{"id":251,"date":"2015-11-14T17:36:00","date_gmt":"2015-11-14T17:36:00","guid":{"rendered":""},"modified":"2015-11-14T17:36:00","modified_gmt":"2015-11-14T17:36:00","slug":"","status":"publish","type":"post","link":"http:\/\/weizn.net\/?p=251","title":{"rendered":"[\u8f6c] \u673a\u5668\u5b66\u4e60\u4e2d\u5e38\u89c1\u5206\u7c7b\u5668\u7684\u5e94\u7528\u573a\u666f"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_17 counter-hierarchy\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/weizn.net\/?p=251\/#%E8%BF%91%E9%82%BB_Nearest_Neighbor\" title=\"\n\t\t\t\u8fd1\u90bb (Nearest Neighbor) \n\t\t\">\n\t\t\t\u8fd1\u90bb (Nearest Neighbor) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/weizn.net\/?p=251\/#%E8%B4%9D%E5%8F%B6%E6%96%AF_Bayesian\" title=\"\n\t\t\t\u8d1d\u53f6\u65af (Bayesian) \n\t\t\">\n\t\t\t\u8d1d\u53f6\u65af (Bayesian) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/weizn.net\/?p=251\/#%E5%86%B3%E7%AD%96%E6%A0%91_Decision_tree\" title=\"\n\t\t\t\u51b3\u7b56\u6811 (Decision tree) \n\t\t\">\n\t\t\t\u51b3\u7b56\u6811 (Decision tree) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/weizn.net\/?p=251\/#%E9%9A%8F%E6%9C%BA%E6%A3%AE%E6%9E%97_Random_forest\" title=\"\n\t\t\t\u968f\u673a\u68ee\u6797 (Random forest) \n\t\t\">\n\t\t\t\u968f\u673a\u68ee\u6797 (Random forest) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/weizn.net\/?p=251\/#SVM_Support_vector_machine\" title=\"\n\t\t\tSVM (Support vector machine) \n\t\t\">\n\t\t\tSVM (Support vector machine) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/weizn.net\/?p=251\/#%E9%80%BB%E8%BE%91%E6%96%AF%E8%92%82%E5%9B%9E%E5%BD%92_Logistic_regression\" title=\"\n\t\t\t\u903b\u8f91\u65af\u8482\u56de\u5f52 (Logistic regression) \n\t\t\">\n\t\t\t\u903b\u8f91\u65af\u8482\u56de\u5f52 (Logistic regression) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/weizn.net\/?p=251\/#%E5%88%A4%E5%88%AB%E5%88%86%E6%9E%90_Discriminant_analysis\" title=\"\n\t\t\t\u5224\u522b\u5206\u6790 (Discriminant analysis) \n\t\t\">\n\t\t\t\u5224\u522b\u5206\u6790 (Discriminant analysis) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/weizn.net\/?p=251\/#%E7%A5%9E%E7%BB%8F%E7%BD%91%E7%BB%9C_Neural_network\" title=\"\n\t\t\t\u795e\u7ecf\u7f51\u7edc (Neural network) \n\t\t\">\n\t\t\t\u795e\u7ecf\u7f51\u7edc (Neural network) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-9\" href=\"http:\/\/weizn.net\/?p=251\/#Rule-based_methods\" title=\"\n\t\t\tRule-based methods \n\t\t\">\n\t\t\tRule-based methods \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-10\" href=\"http:\/\/weizn.net\/?p=251\/#%E6%8F%90%E5%8D%87%E7%AE%97%E6%B3%95%EF%BC%88Boosting%EF%BC%89\" title=\"\n\t\t\t\u63d0\u5347\u7b97\u6cd5\uff08Boosting\uff09 \n\t\t\">\n\t\t\t\u63d0\u5347\u7b97\u6cd5\uff08Boosting\uff09 \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-11\" href=\"http:\/\/weizn.net\/?p=251\/#%E8%A3%85%E8%A2%8B%E7%AE%97%E6%B3%95%EF%BC%88Bagging%EF%BC%89\" title=\"\n\t\t\t\u88c5\u888b\u7b97\u6cd5\uff08Bagging\uff09 \n\t\t\">\n\t\t\t\u88c5\u888b\u7b97\u6cd5\uff08Bagging\uff09 \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-12\" href=\"http:\/\/weizn.net\/?p=251\/#Stacking\" title=\"\n\t\t\tStacking \n\t\t\">\n\t\t\tStacking \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-13\" href=\"http:\/\/weizn.net\/?p=251\/#%E5%A4%9A%E4%B8%93%E5%AE%B6%E6%A8%A1%E5%9E%8B%EF%BC%88Mixture_of_Experts%EF%BC%89\" title=\"\n\t\t\t\u591a\u4e13\u5bb6\u6a21\u578b\uff08Mixture of Experts\uff09 \n\t\t\">\n\t\t\t\u591a\u4e13\u5bb6\u6a21\u578b\uff08Mixture of Experts\uff09 \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-14\" href=\"http:\/\/weizn.net\/?p=251\/#%E6%9C%80%E5%A4%A7%E7%86%B5%E6%A8%A1%E5%9E%8B_Maximum_entropy_model\" title=\"\n\t\t\t\u6700\u5927\u71b5\u6a21\u578b (Maximum entropy model) \n\t\t\">\n\t\t\t\u6700\u5927\u71b5\u6a21\u578b (Maximum entropy model) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-15\" href=\"http:\/\/weizn.net\/?p=251\/#EM\" title=\"\n\t\t\tEM \n\t\t\">\n\t\t\tEM \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-16\" href=\"http:\/\/weizn.net\/?p=251\/#%E9%9A%90%E9%A9%AC%E5%B0%94%E7%A7%91%E5%A4%AB_Hidden_Markov_model\" title=\"\n\t\t\t\u9690\u9a6c\u5c14\u79d1\u592b (Hidden Markov model) \n\t\t\">\n\t\t\t\u9690\u9a6c\u5c14\u79d1\u592b (Hidden Markov model) \n\t\t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-17\" href=\"http:\/\/weizn.net\/?p=251\/#%E6%9D%A1%E4%BB%B6%E9%9A%8F%E6%9C%BA%E5%9C%BA_Conditional_random_field\" title=\"\n\t\t\t\u6761\u4ef6\u968f\u673a\u573a (Conditional random field) \n\t\t\">\n\t\t\t\u6761\u4ef6\u968f\u673a\u573a (Conditional random field) \n\t\t<\/a><\/li><\/ul><\/nav><\/div>\n<p style=\"box-sizing:border-box;outline:0px;margin-top:0px;margin-bottom:16px;padding:0px;color:#4F4F4F;line-height:26px;font-family:-apple-system, &quot;white-space:normal;background-color:#FFFFFF;\">\n\t<span style=\"font-size:18px;\"><span style=\"font-size:14px;\">\u539f\u6587\uff1a<\/span><a href=\"https:\/\/www.zhihu.com\/question\/26726794\" target=\"_blank\"><span style=\"font-size:14px;\">https:\/\/www.zhihu.com\/question\/26726794<\/span><\/a><\/span>\n<\/p>\n<p style=\"box-sizing:border-box;outline:0px;margin-top:0px;margin-bottom:16px;padding:0px;font-size:16px;color:#4F4F4F;line-height:26px;font-family:-apple-system, &quot;white-space:normal;background-color:#FFFFFF;\">\n\t\n<\/p>\n<div>\n\t<span style=\"font-size:14px;\">\u4f5c\u8005\uff1axyzh<\/span><br \/>\n<span style=\"font-size:14px;\">\u94fe\u63a5\uff1ahttps:\/\/www.zhihu.com\/question\/26726794\/answer\/151282052<\/span><br \/>\n<span style=\"font-size:14px;\">\u6765\u6e90\uff1a\u77e5\u4e4e<\/span><br \/>\n<span style=\"font-size:14px;\">\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\u3002\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\uff0c\u975e\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\u3002<\/span><\/p>\n<div>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6b63\u597d14\u5e74\u7684\u65f6\u5019\u6709\u4eba\u505a\u8fc7\u4e00\u4e2a\u5b9e\u9a8c[1]\uff0c\u6bd4\u8f83\u5728\u4e0d\u540c\u6570\u636e\u96c6\u4e0a\uff08121\u4e2a\uff09\uff0c\u4e0d\u540c\u7684\u5206\u7c7b\u5668\uff08179\u4e2a\uff09\u7684\u5b9e\u9645\u6548\u679c\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u8bba\u6587\u9898\u4e3a\uff1aDo we Need Hundreds of Classifiers to Solve Real World Classification Problems?<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5b9e\u9a8c\u65f6\u95f4\u6709\u70b9\u65e9\uff0c\u6211\u5c1d\u8bd5\u7740\u7ed3\u5408\u6211\u81ea\u5df1\u7684\u7406\u89e3\u3001\u4e00\u4e9b\u6700\u8fd1\u7684\u5b9e\u9a8c\uff0c\u6765\u8c08\u4e00\u8c08\u5427\u3002\u4e3b\u8981\u9488\u5bf9\u5206\u7c7b\u5668(Classifier)\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5199\u7ed9\u61d2\u5f97\u770b\u7684\u4eba\uff1a<\/span>\n\t\t<\/p>\n<blockquote><p>\n\t\t\t<b><span style=\"font-size:14px;\">\u6ca1\u6709\u6700\u597d\u7684\u5206\u7c7b\u5668\uff0c\u53ea\u6709\u6700\u5408\u9002\u7684\u5206\u7c7b\u5668\u3002<\/span><\/b>\n\t\t<\/p><\/blockquote>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u968f\u673a\u68ee\u6797\u5e73\u5747\u6765\u8bf4\u6700\u5f3a\uff0c\u4f46\u4e5f\u53ea\u57289.9%\u7684\u6570\u636e\u96c6\u4e0a\u62ff\u5230\u4e86\u7b2c\u4e00\uff0c\u4f18\u70b9\u662f\u9c9c\u6709\u77ed\u677f\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">SVM\u7684\u5e73\u5747\u6c34\u5e73\u7d27\u968f\u5176\u540e\uff0c\u572810.7%\u7684\u6570\u636e\u96c6\u4e0a\u62ff\u5230\u7b2c\u4e00\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u795e\u7ecf\u7f51\u7edc\uff0813.2%\uff09\u548cboosting\uff08~9%\uff09\u8868\u73b0\u4e0d\u9519\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<b><span style=\"font-size:14px;\">\u6570\u636e\u7ef4\u5ea6\u8d8a\u9ad8<\/span><\/b><span style=\"font-size:14px;\">\uff0c\u968f\u673a\u68ee\u6797\u5c31\u6bd4AdaBoost\u5f3a\u8d8a\u591a\uff0c\u4f46\u662f\u6574\u4f53\u4e0d\u53caSVM[2]\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<b><span style=\"font-size:14px;\">\u6570\u636e\u91cf\u8d8a\u5927<\/span><\/b><span style=\"font-size:14px;\">\uff0c\u795e\u7ecf\u7f51\u7edc\u5c31\u8d8a\u5f3a\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%BF%91%E9%82%BB_Nearest_Neighbor\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u8fd1\u90bb (Nearest Neighbor)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure>\n\t\t<noscript><br \/>\n\t\t\t<span style=\"font-size:14px;\"><img decoding=\"async\" src=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/eccd2c1cf4b9ff0de04bf248baf2908020181120073319.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image\" width=\"300\" \/><\/span><br \/>\n\t\t<\/noscript><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/v2-db981be0101f97bd2e29cc0d9494e1cb_b.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image lazy\" width=\"300\" data-actualsrc=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/eccd2c1cf4b9ff0de04bf248baf2908020181120073319.jpg\" \/><\/figure>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5178\u578b\u7684\u4f8b\u5b50\u662fKNN\uff0c\u5b83\u7684\u601d\u8def\u5c31\u662f\u2014\u2014\u5bf9\u4e8e\u5f85\u5224\u65ad\u7684\u70b9\uff0c\u627e\u5230\u79bb\u5b83\u6700\u8fd1\u7684\u51e0\u4e2a\u6570\u636e\u70b9\uff0c\u6839\u636e\u5b83\u4eec\u7684\u7c7b\u578b\u51b3\u5b9a\u5f85\u5224\u65ad\u70b9\u7684\u7c7b\u578b\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5b83\u7684\u7279\u70b9\u662f\u5b8c\u5168\u8ddf\u7740\u6570\u636e\u8d70\uff0c\u6ca1\u6709\u6570\u5b66\u6a21\u578b\u53ef\u8a00\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9002\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9700\u8981\u4e00\u4e2a\u7279\u522b\u5bb9\u6613\u89e3\u91ca\u7684\u6a21\u578b\u7684\u65f6\u5019\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6bd4\u5982\u9700\u8981\u5411\u7528\u6237\u89e3\u91ca\u539f\u56e0\u7684\u63a8\u8350\u7b97\u6cd5\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%B4%9D%E5%8F%B6%E6%96%AF_Bayesian\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u8d1d\u53f6\u65af (Bayesian)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure>\n\t\t<noscript><br \/>\n\t\t\t<span style=\"font-size:14px;\"><img decoding=\"async\" src=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/d7e54baee0b426e88f65b9fbe9c1ea4a20181120073322.jpg\" data-rawwidth=\"800\" data-rawheight=\"238\" class=\"origin_image zh-lightbox-thumb\" width=\"800\" data-original=\"https:\/\/pic4.zhimg.com\/v2-6a364799487ac3d08de175ee52bba54b_r.jpg\" \/><\/span><br \/>\n\t\t<\/noscript><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/v2-6a364799487ac3d08de175ee52bba54b_b.jpg\" data-rawwidth=\"800\" data-rawheight=\"238\" class=\"origin_image zh-lightbox-thumb lazy\" width=\"800\" data-original=\"https:\/\/pic4.zhimg.com\/v2-6a364799487ac3d08de175ee52bba54b_r.jpg\" data-actualsrc=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/d7e54baee0b426e88f65b9fbe9c1ea4a20181120073322.jpg\" \/><\/figure>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5178\u578b\u7684\u4f8b\u5b50\u662fNaive Bayes\uff0c\u6838\u5fc3\u601d\u8def\u662f\u6839\u636e\u6761\u4ef6\u6982\u7387\u8ba1\u7b97\u5f85\u5224\u65ad\u70b9\u7684\u7c7b\u578b\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u662f\u76f8\u5bf9\u5bb9\u6613\u7406\u89e3\u7684\u4e00\u4e2a\u6a21\u578b\uff0c\u81f3\u4eca\u4f9d\u7136\u88ab\u5783\u573e\u90ae\u4ef6\u8fc7\u6ee4\u5668\u4f7f\u7528\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9002\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9700\u8981\u4e00\u4e2a\u6bd4\u8f83\u5bb9\u6613\u89e3\u91ca\uff0c\u800c\u4e14\u4e0d\u540c\u7ef4\u5ea6\u4e4b\u95f4\u76f8\u5173\u6027\u8f83\u5c0f\u7684\u6a21\u578b\u7684\u65f6\u5019\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u53ef\u4ee5\u9ad8\u6548\u5904\u7406\u9ad8\u7ef4\u6570\u636e\uff0c\u867d\u7136\u7ed3\u679c\u53ef\u80fd\u4e0d\u5c3d\u5982\u4eba\u610f\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%86%B3%E7%AD%96%E6%A0%91_Decision_tree\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u51b3\u7b56\u6811 (Decision tree)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure>\n\t\t<noscript><br \/>\n\t\t\t<span style=\"font-size:14px;\"><img decoding=\"async\" src=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/34ecff8311d522a3bdbb641abb469bcc20181120073322.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image\" width=\"300\" \/><\/span><br \/>\n\t\t<\/noscript><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/v2-4191c581aa44793282f1801caf4b378e_b.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image lazy\" width=\"300\" data-actualsrc=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/34ecff8311d522a3bdbb641abb469bcc20181120073322.jpg\" \/><\/figure>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u51b3\u7b56\u6811\u7684\u7279\u70b9\u662f\u5b83\u603b\u662f\u5728\u6cbf\u7740\u7279\u5f81\u505a\u5207\u5206\u3002\u968f\u7740\u5c42\u5c42\u9012\u8fdb\uff0c\u8fd9\u4e2a\u5212\u5206\u4f1a\u8d8a\u6765\u8d8a\u7ec6\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u867d\u7136\u751f\u6210\u7684\u6811\u4e0d\u5bb9\u6613\u7ed9\u7528\u6237\u770b\uff0c\u4f46\u662f\u6570\u636e\u5206\u6790\u7684\u65f6\u5019\uff0c\u901a\u8fc7\u89c2\u5bdf\u6811\u7684\u4e0a\u5c42\u7ed3\u6784\uff0c\u80fd\u591f\u5bf9\u5206\u7c7b\u5668\u7684\u6838\u5fc3\u601d\u8def\u6709\u4e00\u4e2a\u76f4\u89c2\u7684\u611f\u53d7\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4e3e\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff0c\u5f53\u6211\u4eec\u9884\u6d4b\u4e00\u4e2a\u5b69\u5b50\u7684\u8eab\u9ad8\u7684\u65f6\u5019\uff0c\u51b3\u7b56\u6811\u7684\u7b2c\u4e00\u5c42\u53ef\u80fd\u662f\u8fd9\u4e2a\u5b69\u5b50\u7684\u6027\u522b\u3002\u7537\u751f\u8d70\u5de6\u8fb9\u7684\u6811\u8fdb\u884c\u8fdb\u4e00\u6b65\u9884\u6d4b\uff0c\u5973\u751f\u5219\u8d70\u53f3\u8fb9\u7684\u6811\u3002\u8fd9\u5c31\u8bf4\u660e\u6027\u522b\u5bf9\u8eab\u9ad8\u6709\u5f88\u5f3a\u7684\u5f71\u54cd\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9002\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u56e0\u4e3a\u5b83\u80fd\u591f\u751f\u6210\u6e05\u6670\u7684\u57fa\u4e8e\u7279\u5f81(feature)\u9009\u62e9\u4e0d\u540c\u9884\u6d4b\u7ed3\u679c\u7684\u6811\u72b6\u7ed3\u6784\uff0c\u6570\u636e\u5206\u6790\u5e08\u5e0c\u671b\u66f4\u597d\u7684\u7406\u89e3\u624b\u4e0a\u7684\u6570\u636e\u7684\u65f6\u5019\u5f80\u5f80\u53ef\u4ee5\u4f7f\u7528\u51b3\u7b56\u6811\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u540c\u65f6\u5b83\u4e5f\u662f\u76f8\u5bf9\u5bb9\u6613\u88ab\u653b\u51fb\u7684\u5206\u7c7b\u5668[3]\u3002\u8fd9\u91cc\u7684\u653b\u51fb\u662f\u6307\u4eba\u4e3a\u7684\u6539\u53d8\u4e00\u4e9b\u7279\u5f81\uff0c\u4f7f\u5f97\u5206\u7c7b\u5668\u5224\u65ad\u9519\u8bef\u3002\u5e38\u89c1\u4e8e\u5783\u573e\u90ae\u4ef6\u8eb2\u907f\u68c0\u6d4b\u4e2d\u3002\u56e0\u4e3a\u51b3\u7b56\u6811\u6700\u7ec8\u5728\u5e95\u5c42\u5224\u65ad\u662f\u57fa\u4e8e\u5355\u4e2a\u6761\u4ef6\u7684\uff0c\u653b\u51fb\u8005\u5f80\u5f80\u53ea\u9700\u8981\u6539\u53d8\u5f88\u5c11\u7684\u7279\u5f81\u5c31\u53ef\u4ee5\u9003\u8fc7\u76d1\u6d4b\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u53d7\u9650\u4e8e\u5b83\u7684\u7b80\u5355\u6027\uff0c\u51b3\u7b56\u6811\u66f4\u5927\u7684\u7528\u5904\u662f\u4f5c\u4e3a\u4e00\u4e9b\u66f4\u6709\u7528\u7684\u7b97\u6cd5\u7684\u57fa\u77f3\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E9%9A%8F%E6%9C%BA%E6%A3%AE%E6%9E%97_Random_forest\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u968f\u673a\u68ee\u6797 (Random forest)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure>\n\t\t<noscript><br \/>\n\t\t\t<span style=\"font-size:14px;\"><img decoding=\"async\" src=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/9694fda68da495bcd9c36975a520e59b20181120073325.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image\" width=\"300\" \/><\/span><br \/>\n\t\t<\/noscript><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/v2-5b55bf6ba5b214d4bf73867166cfe5ff_b.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image lazy\" width=\"300\" data-actualsrc=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/9694fda68da495bcd9c36975a520e59b20181120073325.jpg\" \/><\/figure>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u63d0\u5230\u51b3\u7b56\u6811\u5c31\u4e0d\u5f97\u4e0d\u63d0\u968f\u673a\u68ee\u6797\u3002\u987e\u540d\u601d\u4e49\uff0c\u68ee\u6797\u5c31\u662f\u5f88\u591a\u6811\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4e25\u683c\u6765\u8bf4\uff0c\u968f\u673a\u68ee\u6797\u5176\u5b9e\u7b97\u662f\u4e00\u79cd\u96c6\u6210\u7b97\u6cd5\u3002\u5b83\u9996\u5148\u968f\u673a\u9009\u53d6\u4e0d\u540c\u7684\u7279\u5f81(feature)\u548c\u8bad\u7ec3\u6837\u672c(training sample)\uff0c\u751f\u6210\u5927\u91cf\u7684\u51b3\u7b56\u6811\uff0c\u7136\u540e\u7efc\u5408\u8fd9\u4e9b\u51b3\u7b56\u6811\u7684\u7ed3\u679c\u6765\u8fdb\u884c\u6700\u7ec8\u7684\u5206\u7c7b\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u968f\u673a\u68ee\u6797\u5728\u73b0\u5b9e\u5206\u6790\u4e2d\u88ab\u5927\u91cf\u4f7f\u7528\uff0c\u5b83\u76f8\u5bf9\u4e8e\u51b3\u7b56\u6811\uff0c\u5728\u51c6\u786e\u6027\u4e0a\u6709\u4e86\u5f88\u5927\u7684\u63d0\u5347\uff0c\u540c\u65f6\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u6539\u5584\u4e86\u51b3\u7b56\u6811\u5bb9\u6613\u88ab\u653b\u51fb\u7684\u7279\u70b9\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9002\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6570\u636e\u7ef4\u5ea6\u76f8\u5bf9\u4f4e\uff08\u51e0\u5341\u7ef4\uff09\uff0c\u540c\u65f6\u5bf9\u51c6\u786e\u6027\u6709\u8f83\u9ad8\u8981\u6c42\u65f6\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u56e0\u4e3a\u4e0d\u9700\u8981\u5f88\u591a\u53c2\u6570\u8c03\u6574\u5c31\u53ef\u4ee5\u8fbe\u5230\u4e0d\u9519\u7684\u6548\u679c\uff0c\u57fa\u672c\u4e0a\u4e0d\u77e5\u9053\u7528\u4ec0\u4e48\u65b9\u6cd5\u7684\u65f6\u5019\u90fd\u53ef\u4ee5\u5148\u8bd5\u4e00\u4e0b\u968f\u673a\u68ee\u6797\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"SVM_Support_vector_machine\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">SVM (Support vector machine)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure>\n\t\t<noscript><br \/>\n\t\t\t<span style=\"font-size:14px;\"><img decoding=\"async\" src=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/e8f5b0cac47eca6a2334d20bc43f323c20181120073326.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image\" width=\"300\" \/><\/span><br \/>\n\t\t<\/noscript><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/v2-31a190418b15d074a36eb42b5555b189_b.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image lazy\" width=\"300\" data-actualsrc=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/e8f5b0cac47eca6a2334d20bc43f323c20181120073326.jpg\" \/><\/figure>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">SVM\u7684\u6838\u5fc3\u601d\u60f3\u5c31\u662f\u627e\u5230\u4e0d\u540c\u7c7b\u522b\u4e4b\u95f4\u7684\u5206\u754c\u9762\uff0c\u4f7f\u5f97\u4e24\u7c7b\u6837\u672c\u5c3d\u91cf\u843d\u5728\u9762\u7684\u4e24\u8fb9\uff0c\u800c\u4e14\u79bb\u5206\u754c\u9762\u5c3d\u91cf\u8fdc\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6700\u65e9\u7684SVM\u662f\u5e73\u9762\u7684\uff0c\u5c40\u9650\u5f88\u5927\u3002\u4f46\u662f\u5229\u7528\u6838\u51fd\u6570(kernel function)\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u5e73\u9762\u6295\u5c04(mapping)\u6210\u66f2\u9762\uff0c\u8fdb\u800c\u5927\u5927\u63d0\u9ad8SVM\u7684\u9002\u7528\u8303\u56f4\u3002<\/span>\n\t\t<\/p>\n<figure>\n\t\t<noscript><br \/>\n\t\t\t<span style=\"font-size:14px;\"><img decoding=\"async\" src=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/f8c8d735895e09e86fd496b372e9fd5320181120073326.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image\" width=\"300\" \/><\/span><br \/>\n\t\t<\/noscript><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/v2-6f329fd5233c34fbf40a325f1b396ac0_b.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image lazy\" width=\"300\" data-actualsrc=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/f8c8d735895e09e86fd496b372e9fd5320181120073326.jpg\" \/><\/figure>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u63d0\u9ad8\u4e4b\u540e\u7684SVM\u540c\u6837\u88ab\u5927\u91cf\u4f7f\u7528\uff0c\u5728\u5b9e\u9645\u5206\u7c7b\u4e2d\u5c55\u73b0\u4e86\u5f88\u4f18\u79c0\u7684\u6b63\u786e\u7387\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9002\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">SVM\u5728\u5f88\u591a\u6570\u636e\u96c6\u4e0a\u90fd\u6709\u4f18\u79c0\u7684\u8868\u73b0\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u76f8\u5bf9\u6765\u8bf4\uff0cSVM\u5c3d\u91cf\u4fdd\u6301\u4e0e\u6837\u672c\u95f4\u8ddd\u79bb\u7684\u6027\u8d28\u5bfc\u81f4\u5b83\u6297\u653b\u51fb\u7684\u80fd\u529b\u66f4\u5f3a\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u548c\u968f\u673a\u68ee\u6797\u4e00\u6837\uff0c\u8fd9\u4e5f\u662f\u4e00\u4e2a\u62ff\u5230\u6570\u636e\u5c31\u53ef\u4ee5\u5148\u5c1d\u8bd5\u4e00\u4e0b\u7684\u7b97\u6cd5\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E9%80%BB%E8%BE%91%E6%96%AF%E8%92%82%E5%9B%9E%E5%BD%92_Logistic_regression\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u903b\u8f91\u65af\u8482\u56de\u5f52 (Logistic regression)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure>\n\t\t<noscript><br \/>\n\t\t\t<span style=\"font-size:14px;\"><img decoding=\"async\" src=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/08b39f2120399a4702e879ec08472d9420181120073327.jpg\" data-rawwidth=\"300\" data-rawheight=\"405\" class=\"content_image\" width=\"300\" \/><\/span><br \/>\n\t\t<\/noscript><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/v2-0bb8543ebe94192b6160046e74a964b3_b.jpg\" data-rawwidth=\"300\" data-rawheight=\"405\" class=\"content_image lazy\" width=\"300\" data-actualsrc=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/08b39f2120399a4702e879ec08472d9420181120073327.jpg\" \/><\/figure>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u903b\u8f91\u65af\u8482\u56de\u5f52\u8fd9\u4e2a\u540d\u5b57\u592a\u8be1\u5f02\u4e86\uff0c\u6211\u5c31\u53eb\u5b83LR\u5427\uff0c\u53cd\u6b63\u8ba8\u8bba\u7684\u662f\u5206\u7c7b\u5668\uff0c\u4e5f\u6ca1\u6709\u522b\u7684\u65b9\u6cd5\u53ebLR\u3002\u987e\u540d\u601d\u4e49\uff0c\u5b83\u5176\u5b9e\u662f\u56de\u5f52\u7c7b\u65b9\u6cd5\u7684\u4e00\u4e2a\u53d8\u4f53\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u56de\u5f52\u65b9\u6cd5\u7684\u6838\u5fc3\u5c31\u662f\u4e3a\u51fd\u6570\u627e\u5230\u6700\u5408\u9002\u7684\u53c2\u6570\uff0c\u4f7f\u5f97\u51fd\u6570\u7684\u503c\u548c\u6837\u672c\u7684\u503c\u6700\u63a5\u8fd1\u3002\u4f8b\u5982\u7ebf\u6027\u56de\u5f52(Linear regression)\u5c31\u662f\u5bf9\u4e8e\u51fd\u6570f(x)=ax+b\uff0c\u627e\u5230\u6700\u5408\u9002\u7684a,b\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">LR\u62df\u5408\u7684\u5c31\u4e0d\u662f\u7ebf\u6027\u51fd\u6570\u4e86\uff0c\u5b83\u62df\u5408\u7684\u662f\u4e00\u4e2a\u6982\u7387\u5b66\u4e2d\u7684\u51fd\u6570\uff0cf(x)\u7684\u503c\u8fd9\u65f6\u5019\u5c31\u53cd\u6620\u4e86\u6837\u672c\u5c5e\u4e8e\u8fd9\u4e2a\u7c7b\u7684\u6982\u7387\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9002\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">LR\u540c\u6837\u662f\u5f88\u591a\u5206\u7c7b\u7b97\u6cd5\u7684\u57fa\u7840\u7ec4\u4ef6\uff0c\u5b83\u7684\u597d\u5904\u662f\u8f93\u51fa\u503c\u81ea\u7136\u5730\u843d\u57280\u52301\u4e4b\u95f4\uff0c\u5e76\u4e14\u6709\u6982\u7387\u610f\u4e49\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u56e0\u4e3a\u5b83\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u7ebf\u6027\u7684\u5206\u7c7b\u5668\uff0c\u6240\u4ee5\u5904\u7406\u4e0d\u597d\u7279\u5f81\u4e4b\u95f4\u76f8\u5173\u7684\u60c5\u51b5\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u867d\u7136\u6548\u679c\u4e00\u822c\uff0c\u5374\u80dc\u5728\u6a21\u578b\u6e05\u6670\uff0c\u80cc\u540e\u7684\u6982\u7387\u5b66\u7ecf\u5f97\u4f4f\u63a8\u6572\u3002\u5b83\u62df\u5408\u51fa\u6765\u7684\u53c2\u6570\u5c31\u4ee3\u8868\u4e86\u6bcf\u4e00\u4e2a\u7279\u5f81(feature)\u5bf9\u7ed3\u679c\u7684\u5f71\u54cd\u3002\u4e5f\u662f\u4e00\u4e2a\u7406\u89e3\u6570\u636e\u7684\u597d\u5de5\u5177\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%88%A4%E5%88%AB%E5%88%86%E6%9E%90_Discriminant_analysis\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u5224\u522b\u5206\u6790 (Discriminant analysis)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure>\n\t\t<noscript><br \/>\n\t\t\t<span style=\"font-size:14px;\"><img decoding=\"async\" src=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/b483525f9f8567a0eef184abb0ec42a120181120073327.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image\" width=\"300\" \/><\/span><br \/>\n\t\t<\/noscript><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/v2-768d9045306ce042edc4926f6fcf3b79_b.jpg\" data-rawwidth=\"300\" data-rawheight=\"305\" class=\"content_image lazy\" width=\"300\" data-actualsrc=\"http:\/\/www.weizn.net\/content\/uploadfile\/201811\/b483525f9f8567a0eef184abb0ec42a120181120073327.jpg\" \/><\/figure>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5224\u522b\u5206\u6790\u4e3b\u8981\u662f\u7edf\u8ba1\u90a3\u8fb9\u5728\u7528\uff0c\u6240\u4ee5\u6211\u4e5f\u4e0d\u662f\u5f88\u719f\u6089\uff0c\u4e34\u65f6\u627e\u7edf\u8ba1\u7cfb\u7684\u95fa\u871c\u8865\u4e86\u8865\u8bfe\u3002\u8fd9\u91cc\u5c31\u73b0\u5b66\u73b0\u5356\u4e86\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5224\u522b\u5206\u6790\u7684\u5178\u578b\u4f8b\u5b50\u662f\u7ebf\u6027\u5224\u522b\u5206\u6790(Linear discriminant analysis)\uff0c\u7b80\u79f0LDA\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\uff08\u8fd9\u91cc\u6ce8\u610f\u4e0d\u8981\u548c\u9690\u542b\u72c4\u5229\u514b\u96f7\u5206\u5e03(Latent Dirichlet allocation)\u5f04\u6df7\uff0c\u867d\u7136\u90fd\u53ebLDA\u4f46\u8bf4\u7684\u4e0d\u662f\u4e00\u4ef6\u4e8b\u3002\uff09<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">LDA\u7684\u6838\u5fc3\u601d\u60f3\u662f\u628a\u9ad8\u7ef4\u7684\u6837\u672c\u6295\u5c04(project)\u5230\u4f4e\u7ef4\u4e0a\uff0c\u5982\u679c\u8981\u5206\u6210\u4e24\u7c7b\uff0c\u5c31\u6295\u5c04\u5230\u4e00\u7ef4\u3002\u8981\u5206\u4e09\u7c7b\u5c31\u6295\u5c04\u5230\u4e8c\u7ef4\u5e73\u9762\u4e0a\u3002\u8fd9\u6837\u7684\u6295\u5c04\u5f53\u7136\u6709\u5f88\u591a\u79cd\u4e0d\u540c\u7684\u65b9\u5f0f\uff0cLDA\u6295\u5c04\u7684\u6807\u51c6\u5c31\u662f\u8ba9\u540c\u7c7b\u7684\u6837\u672c\u5c3d\u91cf\u9760\u8fd1\uff0c\u800c\u4e0d\u540c\u7c7b\u7684\u5c3d\u91cf\u5206\u5f00\u3002\u5bf9\u4e8e\u672a\u6765\u8981\u9884\u6d4b\u7684\u6837\u672c\uff0c\u7528\u540c\u6837\u7684\u65b9\u5f0f\u6295\u5c04\u4e4b\u540e\u5c31\u53ef\u4ee5\u8f7b\u6613\u5730\u5206\u8fa8\u7c7b\u522b\u4e86\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4f7f\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5224\u522b\u5206\u6790\u9002\u7528\u4e8e\u9ad8\u7ef4\u6570\u636e\u9700\u8981\u964d\u7ef4\u7684\u60c5\u51b5\uff0c\u81ea\u5e26\u964d\u7ef4\u529f\u80fd\u4f7f\u5f97\u6211\u4eec\u80fd\u65b9\u4fbf\u5730\u89c2\u5bdf\u6837\u672c\u5206\u5e03\u3002\u5b83\u7684\u6b63\u786e\u6027\u6709\u6570\u5b66\u516c\u5f0f\u53ef\u4ee5\u8bc1\u660e\uff0c\u6240\u4ee5\u540c\u6837\u662f\u5f88\u7ecf\u5f97\u4f4f\u63a8\u6572\u7684\u65b9\u5f0f\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4f46\u662f\u5b83\u7684\u5206\u7c7b\u51c6\u786e\u7387\u5f80\u5f80\u4e0d\u662f\u5f88\u9ad8\uff0c\u6240\u4ee5\u4e0d\u662f\u7edf\u8ba1\u7cfb\u7684\u4eba\u5c31\u628a\u5b83\u4f5c\u4e3a\u964d\u7ef4\u5de5\u5177\u7528\u5427\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u540c\u65f6\u6ce8\u610f\u5b83\u662f\u5047\u5b9a\u6837\u672c\u6210\u6b63\u6001\u5206\u5e03\u7684\uff0c\u6240\u4ee5\u90a3\u79cd\u540c\u5fc3\u5706\u5f62\u7684\u6570\u636e\u5c31\u4e0d\u8981\u5c1d\u8bd5\u4e86\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E7%A5%9E%E7%BB%8F%E7%BD%91%E7%BB%9C_Neural_network\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u795e\u7ecf\u7f51\u7edc (Neural network)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u795e\u7ecf\u7f51\u7edc\u73b0\u5728\u662f\u706b\u5f97\u4e0d\u884c\u554a\u3002\u5b83\u7684\u6838\u5fc3\u601d\u8def\u662f\u5229\u7528\u8bad\u7ec3\u6837\u672c(training sample)\u6765\u9010\u6e10\u5730\u5b8c\u5584\u53c2\u6570\u3002\u8fd8\u662f\u4e3e\u4e2a\u4f8b\u5b50\u9884\u6d4b\u8eab\u9ad8\u7684\u4f8b\u5b50\uff0c\u5982\u679c\u8f93\u5165\u7684\u7279\u5f81\u4e2d\u6709\u4e00\u4e2a\u662f\u6027\u522b\uff081:\u7537\uff1b0:\u5973\uff09\uff0c\u800c\u8f93\u51fa\u7684\u7279\u5f81\u662f\u8eab\u9ad8\uff081:\u9ad8\uff1b0:\u77ee\uff09\u3002\u90a3\u4e48\u5f53\u8bad\u7ec3\u6837\u672c\u662f\u4e00\u4e2a\u4e2a\u5b50\u9ad8\u7684\u7537\u751f\u7684\u65f6\u5019\uff0c\u5728\u795e\u7ecf\u7f51\u7edc\u4e2d\uff0c\u4ece\u201c\u7537\u201d\u5230\u201c\u9ad8\u201d\u7684\u8def\u7ebf\u5c31\u4f1a\u88ab\u5f3a\u5316\u3002\u540c\u7406\uff0c\u5982\u679c\u6765\u4e86\u4e00\u4e2a\u4e2a\u5b50\u9ad8\u7684\u5973\u751f\uff0c\u90a3\u4ece\u201c\u5973\u201d\u5230\u201c\u9ad8\u201d\u7684\u8def\u7ebf\u5c31\u4f1a\u88ab\u5f3a\u5316\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6700\u7ec8\u795e\u7ecf\u7f51\u7edc\u7684\u54ea\u4e9b\u8def\u7ebf\u6bd4\u8f83\u5f3a\uff0c\u5c31\u7531\u6211\u4eec\u7684\u6837\u672c\u6240\u51b3\u5b9a\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u795e\u7ecf\u7f51\u7edc\u7684\u4f18\u52bf\u5728\u4e8e\uff0c\u5b83\u53ef\u4ee5\u6709\u5f88\u591a\u5f88\u591a\u5c42\u3002\u5982\u679c\u8f93\u5165\u8f93\u51fa\u662f\u76f4\u63a5\u8fde\u63a5\u7684\uff0c\u90a3\u5b83\u548cLR\u5c31\u6ca1\u6709\u4ec0\u4e48\u533a\u522b\u3002\u4f46\u662f\u901a\u8fc7\u5927\u91cf\u4e2d\u95f4\u5c42\u7684\u5f15\u5165\uff0c\u5b83\u5c31\u80fd\u591f\u6355\u6349\u5f88\u591a\u8f93\u5165\u7279\u5f81\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u5377\u79ef\u795e\u7ecf\u7f51\u7edc\u6709\u5f88\u7ecf\u5178\u7684\u4e0d\u540c\u5c42\u7684\u53ef\u89c6\u5316\u5c55\u793a(visulization)\uff0c\u6211\u8fd9\u91cc\u5c31\u4e0d\u8d58\u8ff0\u4e86\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u795e\u7ecf\u7f51\u7edc\u7684\u63d0\u51fa\u5176\u5b9e\u5f88\u65e9\u4e86\uff0c\u4f46\u662f\u5b83\u7684\u51c6\u786e\u7387\u4f9d\u8d56\u4e8e\u5e9e\u5927\u7684\u8bad\u7ec3\u96c6\uff0c\u539f\u672c\u53d7\u9650\u4e8e\u8ba1\u7b97\u673a\u7684\u901f\u5ea6\uff0c\u5206\u7c7b\u6548\u679c\u4e00\u76f4\u4e0d\u5982\u968f\u673a\u68ee\u6797\u548cSVM\u8fd9\u79cd\u7ecf\u5178\u7b97\u6cd5\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4f7f\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6570\u636e\u91cf\u5e9e\u5927\uff0c\u53c2\u6570\u4e4b\u95f4\u5b58\u5728\u5185\u5728\u8054\u7cfb\u7684\u65f6\u5019\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5f53\u7136\u73b0\u5728\u795e\u7ecf\u7f51\u7edc\u4e0d\u53ea\u662f\u4e00\u4e2a\u5206\u7c7b\u5668\uff0c\u5b83\u8fd8\u53ef\u4ee5\u7528\u6765\u751f\u6210\u6570\u636e\uff0c\u7528\u6765\u505a\u964d\u7ef4\uff0c\u8fd9\u4e9b\u5c31\u4e0d\u5728\u8fd9\u91cc\u8ba8\u8bba\u4e86\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Rule-based_methods\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">Rule-based methods<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u8fd9\u4e2a\u6211\u662f\u771f\u4e0d\u719f\uff0c\u90fd\u4e0d\u77e5\u9053\u4e2d\u6587\u7ffb\u8bd1\u662f\u4ec0\u4e48\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5b83\u91cc\u9762\u5178\u578b\u7684\u7b97\u6cd5\u662fC5.0 Rules\uff0c\u4e00\u4e2a\u57fa\u4e8e\u51b3\u7b56\u6811\u7684\u53d8\u4f53\u3002\u56e0\u4e3a\u51b3\u7b56\u6811\u6bd5\u7adf\u662f\u6811\u72b6\u7ed3\u6784\uff0c\u7406\u89e3\u4e0a\u8fd8\u662f\u6709\u4e00\u5b9a\u96be\u5ea6\u3002\u6240\u4ee5\u5b83\u628a\u51b3\u7b56\u6811\u7684\u7ed3\u679c\u63d0\u53d6\u51fa\u6765\uff0c\u5f62\u6210\u4e00\u4e2a\u4e00\u4e2a\u4e24\u4e09\u4e2a\u6761\u4ef6\u7ec4\u6210\u7684\u5c0f\u89c4\u5219\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4f7f\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5b83\u7684\u51c6\u786e\u5ea6\u6bd4\u51b3\u7b56\u6811\u7a0d\u4f4e\uff0c\u5f88\u5c11\u89c1\u4eba\u7528\u3002\u5927\u6982\u9700\u8981\u63d0\u4f9b\u660e\u786e\u5c0f\u89c4\u5219\u6765\u89e3\u91ca\u51b3\u5b9a\u7684\u65f6\u5019\u624d\u4f1a\u7528\u5427\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%8F%90%E5%8D%87%E7%AE%97%E6%B3%95%EF%BC%88Boosting%EF%BC%89\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u63d0\u5347\u7b97\u6cd5\uff08Boosting\uff09<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u63a5\u4e0b\u6765\u8bb2\u7684\u4e00\u7cfb\u5217\u6a21\u578b\uff0c\u90fd\u5c5e\u4e8e\u96c6\u6210\u5b66\u4e60\u7b97\u6cd5(Ensemble Learning)\uff0c\u57fa\u4e8e\u4e00\u4e2a\u6838\u5fc3\u7406\u5ff5\uff1a\u4e09\u4e2a\u81ed\u76ae\u5320\uff0c\u9876\u4e2a\u8bf8\u845b\u4eae\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u7ffb\u8bd1\u8fc7\u6765\u5c31\u662f\uff1a\u5f53\u6211\u4eec\u628a\u591a\u4e2a\u8f83\u5f31\u7684\u5206\u7c7b\u5668\u7ed3\u5408\u8d77\u6765\u7684\u65f6\u5019\uff0c\u5b83\u7684\u7ed3\u679c\u4f1a\u6bd4\u4e00\u4e2a\u5f3a\u7684\u5206\u7c7b\u5668\u66f4<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5178\u578b\u7684\u4f8b\u5b50\u662fAdaBoost\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">AdaBoost\u7684\u5b9e\u73b0\u662f\u4e00\u4e2a\u6e10\u8fdb\u7684\u8fc7\u7a0b\uff0c\u4ece\u4e00\u4e2a\u6700\u57fa\u7840\u7684\u5206\u7c7b\u5668\u5f00\u59cb\uff0c\u6bcf\u6b21\u5bfb\u627e\u4e00\u4e2a\u6700\u80fd\u89e3\u51b3\u5f53\u524d\u9519\u8bef\u6837\u672c\u7684\u5206\u7c7b\u5668\u3002\u7528\u52a0\u6743\u53d6\u548c(weighted sum)\u7684\u65b9\u5f0f\u628a\u8fd9\u4e2a\u65b0\u5206\u7c7b\u5668\u7ed3\u5408\u8fdb\u5df2\u6709\u7684\u5206\u7c7b\u5668\u4e2d\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5b83\u7684\u597d\u5904\u662f\u81ea\u5e26\u4e86\u7279\u5f81\u9009\u62e9\uff08feature selection\uff09\uff0c\u53ea\u4f7f\u7528\u5728\u8bad\u7ec3\u96c6\u4e2d\u53d1\u73b0\u6709\u6548\u7684\u7279\u5f81(feature)\u3002\u8fd9\u6837\u5c31\u964d\u4f4e\u4e86\u5206\u7c7b\u65f6\u9700\u8981\u8ba1\u7b97\u7684\u7279\u5f81\u6570\u91cf\uff0c\u4e5f\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u89e3\u51b3\u4e86\u9ad8\u7ef4\u6570\u636e\u96be\u4ee5\u7406\u89e3\u7684\u95ee\u9898\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6700\u7ecf\u5178\u7684AdaBoost\u5b9e\u73b0\u4e2d\uff0c\u5b83\u7684\u6bcf\u4e00\u4e2a\u5f31\u5206\u7c7b\u5668\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u51b3\u7b56\u6811\u3002\u8fd9\u5c31\u662f\u4e4b\u524d\u4e3a\u4ec0\u4e48\u8bf4\u51b3\u7b56\u6811\u662f\u5404\u79cd\u7b97\u6cd5\u7684\u57fa\u77f3\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4f7f\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u597d\u7684Boosting\u7b97\u6cd5\uff0c\u5b83\u7684\u51c6\u786e\u6027\u4e0d\u900a\u4e8e\u968f\u673a\u68ee\u6797\u3002\u867d\u7136\u5728[1]\u7684\u5b9e\u9a8c\u4e2d\u53ea\u6709\u4e00\u4e2a\u6324\u8fdb\u524d\u5341\uff0c\u4f46\u662f\u5b9e\u9645\u4f7f\u7528\u4e2d\u5b83\u8fd8\u662f\u5f88\u5f3a\u7684\u3002\u56e0\u4e3a\u81ea\u5e26\u7279\u5f81\u9009\u62e9\uff08feature selection\uff09\u6240\u4ee5\u5bf9\u65b0\u624b\u5f88\u53cb\u597d\uff0c\u662f\u4e00\u4e2a\u201c\u4e0d\u77e5\u9053\u7528\u4ec0\u4e48\u5c31\u8bd5\u4e00\u4e0b\u5b83\u5427\u201d\u7684\u7b97\u6cd5\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%A3%85%E8%A2%8B%E7%AE%97%E6%B3%95%EF%BC%88Bagging%EF%BC%89\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u88c5\u888b\u7b97\u6cd5\uff08Bagging\uff09<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u540c\u6837\u662f\u5f31\u5206\u7c7b\u5668\u7ec4\u5408\u7684\u601d\u8def\uff0c\u76f8\u5bf9\u4e8eBoosting\uff0c\u5176\u5b9eBagging\u66f4\u597d\u7406\u89e3\u3002\u5b83\u9996\u5148\u968f\u673a\u5730\u62bd\u53d6\u8bad\u7ec3\u96c6\uff08training set\uff09\uff0c\u4ee5\u4e4b\u4e3a\u57fa\u7840\u8bad\u7ec3\u591a\u4e2a\u5f31\u5206\u7c7b\u5668\u3002\u7136\u540e\u901a\u8fc7\u53d6\u5e73\u5747\uff0c\u6216\u8005\u6295\u7968(voting)\u7684\u65b9\u5f0f\u51b3\u5b9a\u6700\u7ec8\u7684\u5206\u7c7b\u7ed3\u679c\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u56e0\u4e3a\u5b83\u968f\u673a\u9009\u53d6\u8bad\u7ec3\u96c6\u7684\u7279\u70b9\uff0cBagging\u53ef\u4ee5\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u907f\u514d\u8fc7\u6e21\u62df\u5408(overfit)\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5728[1]\u4e2d\uff0c\u6700\u5f3a\u7684Bagging\u7b97\u6cd5\u662f\u57fa\u4e8eSVM\u7684\u3002\u5982\u679c\u7528\u5b9a\u4e49\u4e0d\u90a3\u4e48\u4e25\u683c\u7684\u8bdd\uff0c\u968f\u673a\u68ee\u6797\u4e5f\u7b97\u662fBagging\u7684\u4e00\u79cd\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4f7f\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u76f8\u8f83\u4e8e\u7ecf\u5178\u7684\u5fc5\u4f7f\u7b97\u6cd5\uff0cBagging\u4f7f\u7528\u7684\u4eba\u66f4\u5c11\u4e00\u4e9b\u3002\u4e00\u90e8\u5206\u7684\u539f\u56e0\u662fBagging\u7684\u6548\u679c\u548c\u53c2\u6570\u7684\u9009\u62e9\u5173\u7cfb\u6bd4\u8f83\u5927\uff0c\u7528\u9ed8\u8ba4\u53c2\u6570\u5f80\u5f80\u6ca1\u6709\u5f88\u597d\u7684\u6548\u679c\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u867d\u7136\u8c03\u5bf9\u53c2\u6570\u7ed3\u679c\u4f1a\u6bd4\u51b3\u7b56\u6811\u548cLR\u597d\uff0c\u4f46\u662f\u6a21\u578b\u4e5f\u53d8\u5f97\u590d\u6742\u4e86\uff0c\u6ca1\u4e8b\u6709\u7279\u522b\u7684\u539f\u56e0\u5c31\u522b\u7528\u5b83\u4e86\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Stacking\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">Stacking<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u8fd9\u4e2a\u6211\u662f\u771f\u4e0d\u77e5\u9053\u4e2d\u6587\u600e\u4e48\u8bf4\u4e86\u3002\u5b83\u6240\u505a\u7684\u662f\u5728\u591a\u4e2a\u5206\u7c7b\u5668\u7684\u7ed3\u679c\u4e0a\uff0c\u518d\u5957\u4e00\u4e2a\u65b0\u7684\u5206\u7c7b\u5668\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u8fd9\u4e2a\u65b0\u7684\u5206\u7c7b\u5668\u5c31\u57fa\u4e8e\u5f31\u5206\u7c7b\u5668\u7684\u5206\u6790\u7ed3\u679c\uff0c\u52a0\u4e0a\u8bad\u7ec3\u6807\u7b7e(training label)\u8fdb\u884c\u8bad\u7ec3\u3002\u4e00\u822c\u8fd9\u6700\u540e\u4e00\u5c42\u7528\u7684\u662fLR\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">Stacking\u5728[1]\u91cc\u9762\u7684\u8868\u73b0\u4e0d\u597d\uff0c\u53ef\u80fd\u662f\u56e0\u4e3a\u589e\u52a0\u7684\u4e00\u5c42\u5206\u7c7b\u5668\u5f15\u5165\u4e86\u66f4\u591a\u7684\u53c2\u6570\uff0c\u4e5f\u53ef\u80fd\u662f\u56e0\u4e3a\u6709\u8fc7\u6e21\u62df\u5408(overfit)\u7684\u73b0\u8c61\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4f7f\u7528\u60c5\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6ca1\u4e8b\u5c31\u522b\u7528\u4e86\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\uff08\u4fee\u8ba2\uff1a<\/span><span class=\"UserLink\"><\/span>\n\t\t<\/p>\n<div class=\"Popover\">\n<div id=\"Popover23-toggle\" aria-haspopup=\"true\" aria-expanded=\"false\" aria-owns=\"Popover23-content\">\n\t\t\t\t<a class=\"UserLink-link\" data-za-detail-view-element_name=\"User\" target=\"_blank\" href=\"http:\/\/www.weizn.net\/www.zhihu.com\/people\/7ca4a0bcf00428d17e73e7ad0bd51e4d\" data-za-detail-view-id=\"1045\"><span style=\"font-size:14px;\">@\u5e84\u5ca9<\/span><\/a>\n\t\t\t<\/div>\n<\/p><\/div>\n<p><span style=\"font-size:14px;\">\u63d0\u9192\u8bf4stacking\u5728\u6570\u636e\u6316\u6398\u7ade\u8d5b\u7684\u7f51\u7ad9kaggle\u4e0a\u5f88\u706b\uff0c\u76f8\u4fe1\u53c2\u6570\u8c03\u5f97\u597d\u7684\u8bdd\u8fd8\u662f\u5bf9\u7ed3\u679c\u80fd\u6709\u5e2e\u52a9\u7684\u3002<\/span> <\/p>\n<p>\n\t\t\t<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/blog.kaggle.com\/2016\/12\/27\/a-kagglers-guide-to-model-stacking-in-practice\/\" class=\" external\" target=\"_blank\" rel=\"nofollow noreferrer\" data-za-detail-view-id=\"1043\"><span class=\"invisible\" style=\"font-size:14px;\">http:\/\/<\/span><span class=\"visible\" style=\"font-size:14px;\">blog.kaggle.com\/2016\/12<\/span><span class=\"invisible\" style=\"font-size:14px;\">\/27\/a-kagglers-guide-to-model-stacking-in-practice\/<\/span><span class=\"ellipsis\"><\/span><\/a>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u8fd9\u7bc7\u6587\u7ae0\u5f88\u597d\u5730\u4ecb\u7ecd\u4e86stacking\u7684\u597d\u5904\u3002\u5728kaggle\u8fd9\u79cd\u4e00\u70b9\u70b9\u63d0\u5347\u5c31\u610f\u5473\u7740\u540d\u6b21\u4e0d\u540c\u7684\u573a\u5408\u4e0b\uff0cstacking\u8fd8\u662f\u5f88\u6709\u6548\u7684\uff0c\u4f46\u662f\u5bf9\u4e8e\u4e00\u822c\u5546\u7528\uff0c\u5b83\u6240\u5e26\u6765\u7684\u63d0\u5347\u5c31\u5f88\u96be\u503c\u56de\u989d\u5916\u7684\u590d\u6742\u5ea6\u4e86\u3002\uff09<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%A4%9A%E4%B8%93%E5%AE%B6%E6%A8%A1%E5%9E%8B%EF%BC%88Mixture_of_Experts%EF%BC%89\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u591a\u4e13\u5bb6\u6a21\u578b\uff08Mixture of Experts\uff09<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6700\u8fd1\u8fd9\u4e2a\u6a21\u578b\u8fd8\u633a\u6d41\u884c\u7684\uff0c\u4e3b\u8981\u662f\u7528\u6765\u5408\u5e76\u795e\u7ecf\u7f51\u7edc\u7684\u5206\u7c7b\u7ed3\u679c\u3002\u6211\u4e5f\u4e0d\u662f\u5f88\u719f\uff0c\u5bf9\u795e\u7ecf\u7f51\u7edc\u611f\u5174\u8da3\uff0c\u800c\u4e14\u8bad\u7ec3\u96c6\u5f02\u8d28\u6027\uff08heterogeneity\uff09\u6bd4\u8f83\u5f3a\u7684\u8bdd\u53ef\u4ee5\u7814\u7a76\u4e00\u4e0b\u8fd9\u4e2a\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<b><span style=\"font-size:14px;\">\u8bb2\u5230\u8fd9\u91cc\u5206\u7c7b\u5668\u5176\u5b9e\u57fa\u672c\u8bf4\u5b8c\u4e86\u3002\u8bb2\u4e00\u4e0b\u95ee\u9898\u91cc\u9762\u5176\u4ed6\u4e00\u4e9b\u540d\u8bcd\u5427\u3002<\/span><\/b>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%9C%80%E5%A4%A7%E7%86%B5%E6%A8%A1%E5%9E%8B_Maximum_entropy_model\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u6700\u5927\u71b5\u6a21\u578b (Maximum entropy model)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u6700\u5927\u71b5\u6a21\u578b\u672c\u8eab\u4e0d\u662f\u5206\u7c7b\u5668\uff0c\u5b83\u4e00\u822c\u662f\u7528\u6765\u5224\u65ad\u6a21\u578b\u9884\u6d4b\u7ed3\u679c\u7684\u597d\u574f\u7684\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5bf9\u4e8e\u5b83\u6765\u8bf4\uff0c\u5206\u7c7b\u5668\u9884\u6d4b\u662f\u76f8\u5f53\u4e8e\u662f\uff1a\u9488\u5bf9\u6837\u672c\uff0c\u7ed9\u6bcf\u4e2a\u7c7b\u4e00\u4e2a\u51fa\u73b0\u6982\u7387\u3002\u6bd4\u5982\u8bf4\u6837\u672c\u7684\u7279\u5f81\u662f\uff1a\u6027\u522b\u7537\u3002\u6211\u7684\u5206\u7c7b\u5668\u53ef\u80fd\u5c31\u7ed9\u51fa\u4e86\u4e0b\u9762\u8fd9\u6837\u4e00\u4e2a\u6982\u7387\uff1a\u9ad8\uff0860%\uff09\uff0c\u77ee\uff0840%\uff09\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u800c\u5982\u679c\u8fd9\u4e2a\u6837\u672c\u771f\u7684\u662f\u9ad8\u7684\uff0c\u90a3\u6211\u4eec\u5c31\u5f97\u4e86\u4e00\u4e2a\u5206\u657060%\u3002\u6700\u5927\u71b5\u6a21\u578b\u7684\u76ee\u6807\u5c31\u662f\u8ba9\u8fd9\u4e9b\u5206\u6570\u7684\u4e58\u79ef\u5c3d\u91cf\u5927\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">LR\u5176\u5b9e\u5c31\u662f\u4f7f\u7528\u6700\u5927\u71b5\u6a21\u578b\u4f5c\u4e3a\u4f18\u5316\u76ee\u6807\u7684\u4e00\u4e2a\u7b97\u6cd5[4]\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"EM\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">EM<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5c31\u50cf\u6700\u5927\u71b5\u6a21\u578b\u4e00\u6837\uff0cEM\u4e0d\u662f\u5206\u7c7b\u5668\uff0c\u800c\u662f\u4e00\u4e2a\u601d\u8def\u3002\u5f88\u591a\u7b97\u6cd5\u90fd\u662f\u57fa\u4e8e\u8fd9\u4e2a\u601d\u8def\u5b9e\u73b0\u7684\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">@\u5218\u5955\u9a70  \u5df2\u7ecf\u8bb2\u5f97\u5f88\u6e05\u695a\u4e86\uff0c\u6211\u5c31\u4e0d\u591a\u8bf4\u4e86\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E9%9A%90%E9%A9%AC%E5%B0%94%E7%A7%91%E5%A4%AB_Hidden_Markov_model\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u9690\u9a6c\u5c14\u79d1\u592b (Hidden Markov model)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u8fd9\u662f\u4e00\u4e2a\u57fa\u4e8e\u5e8f\u5217\u7684\u9884\u6d4b\u65b9\u6cd5\uff0c\u6838\u5fc3\u601d\u60f3\u5c31\u662f\u901a\u8fc7\u4e0a\u4e00\u4e2a\uff08\u6216\u51e0\u4e2a\uff09\u72b6\u6001\u9884\u6d4b\u4e0b\u4e00\u4e2a\u72b6\u6001\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u4e4b\u6240\u4ee5\u53eb\u201c\u9690\u201d\u9a6c\u5c14\u79d1\u592b\u662f\u56e0\u4e3a\u5b83\u7684\u8bbe\u5b9a\u662f\u72b6\u6001\u672c\u8eab\u6211\u4eec\u662f\u770b\u4e0d\u5230\u7684\uff0c\u6211\u4eec\u53ea\u80fd\u6839\u636e\u72b6\u6001\u751f\u6210\u7684\u7ed3\u679c\u5e8f\u5217\u6765\u5b66\u4e60\u53ef\u80fd\u7684\u72b6\u6001\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u9002\u7528\u573a\u666f\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u53ef\u4ee5\u7528\u4e8e\u5e8f\u5217\u7684\u9884\u6d4b\uff0c\u53ef\u4ee5\u7528\u6765\u751f\u6210\u5e8f\u5217\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%9D%A1%E4%BB%B6%E9%9A%8F%E6%9C%BA%E5%9C%BA_Conditional_random_field\"><\/span>\n\t\t\t<span style=\"font-size:14px;\">\u6761\u4ef6\u968f\u673a\u573a (Conditional random field)<\/span><br \/>\n\t\t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5178\u578b\u7684\u4f8b\u5b50\u662flinear-chain CRF\u3002<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5177\u4f53\u7684\u4f7f\u7528 @Aron \u6709\u8bb2\uff0c\u6211\u5c31\u4e0d\u732e\u4e11\u4e86\uff0c\u56e0\u4e3a\u6211\u4ece\u6765\u6ca1\u7528\u8fc7\u8fd9\u4e2a\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u5c31\u662f\u8fd9\u4e9b\u5566\u3002<\/span>\n\t\t<\/p>\n<p><\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">\u76f8\u5173\u7684\u6587\u7ae0\uff1a<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">[1]: Do we need hundreds of classifiers to solve real world classification problems.<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">Fern\u00e1ndez-Delgado, Manuel, et al. J. Mach. Learn. Res 15.1 (2014)<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">[2]: An empirical evaluation of supervised learning in high dimensions.<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">Rich Caruana, Nikos Karampatziakis, and Ainur Yessenalina. ICML &#8217;08<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">[3]: Man vs. Machine: Practical Adversarial Detection of Malicious Crowdsourcing Workers<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">Wang, G., Wang, T., Zheng, H., &amp; Zhao, B. Y. Usenix Security&#8217;14<\/span>\n\t\t<\/p>\n<p>\n\t\t\t<span style=\"font-size:14px;\">[4]: <\/span><a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/www.win-vector.com\/dfiles\/LogisticRegressionMaxEnt.pdf\" class=\" external\" target=\"_blank\" rel=\"nofollow noreferrer\" data-za-detail-view-id=\"1043\"><span class=\"invisible\" style=\"font-size:14px;\">http:\/\/www.<\/span><span class=\"visible\" style=\"font-size:14px;\">win-vector.com\/dfiles\/L<\/span><span class=\"invisible\" style=\"font-size:14px;\">ogisticRegressionMaxEnt.pdf<\/span><\/a>\n\t\t<\/p>\n<\/p><\/div>\n<\/div>\n<p>\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p style=\"box-sizing:border-box;outline:0px;margin-top:0px;margin-bottom:16px;padding:0px;color:#4F4F4F;line-height:26px;font-family:-apple-system, &quot;white-space:normal;background-color:#FFFFFF;\">\n\t<span style=\"font-size:18px;\">\u539f\u6587\uff1a<a href=\"https:\/\/www.zhihu.com\/question\/26726794\" target=\"_blank\">https:\/\/www.zhihu.com\/question\/26726794<\/a><\/span>\n<\/p>\n<p style=\"box-sizing:border-box;outline:0px;margin-top:0px;margin-bottom:16px;padding:0px;font-size:16px;color:#4F4F4F;line-height:26px;font-family:-apple-system, &quot;white-space:normal;background-color:#FFFFFF;\">\n\t<span style=\"box-sizing:border-box;outline:0px;margin:0px;padding:0px;word-wrap:break-word;font-size:18px;\">\u6b63\u597d14\u5e74\u7684\u65f6\u5019\u6709\u4eba\u505a\u8fc7\u4e00\u4e2a\u5b9e\u9a8c[1]\uff0c\u6bd4\u8f83\u5728\u4e0d\u540c\u6570\u636e\u96c6\u4e0a\uff08121\u4e2a\uff09\uff0c\u4e0d\u540c\u7684\u5206\u7c7b\u5668\uff08179\u4e2a\uff09\u7684\u5b9e\u9645\u6548\u679c\u3002<\/span>\n<\/p>\n<p style=\"box-sizing:border-box;outline:0px;margin-top:0px;margin-bottom:16px;padding:0px;font-size:16px;color:#4F4F4F;line-height:26px;font-family:-apple-system, &quot;white-space:normal;background-color:#FFFFFF;\">\n\t<span style=\"box-sizing:border-box;outline:0px;margin:0px;padding:0px;word-wrap:break-word;font-size:18px;\">\u8bba\u6587\u9898\u4e3a\uff1aDo we Need Hundreds of Classifiers to Solve Real World Classification Problems?<\/span>\n<\/p>\n<p style=\"box-sizing:border-box;outline:0px;margin-top:0px;margin-bottom:16px;padding:0px;font-size:16px;color:#4F4F4F;line-height:26px;font-family:-apple-system, &quot;white-space:normal;background-color:#FFFFFF;\">\n\t<span style=\"box-sizing:border-box;outline:0px;margin:0px;padding:0px;word-wrap:break-word;font-size:18px;\">\u5b9e\u9a8c\u65f6\u95f4\u6709\u70b9\u65e9\uff0c\u6211\u5c1d\u8bd5\u7740\u7ed3\u5408\u6211\u81ea\u5df1\u7684\u7406\u89e3&#8230;<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[337],"tags":[],"class_list":["post-251","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.9 - 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