{"id":343,"date":"2024-08-13T23:01:47","date_gmt":"2024-08-13T15:01:47","guid":{"rendered":"https:\/\/www.xuzhe.tj.cn\/?p=343"},"modified":"2025-05-03T09:13:42","modified_gmt":"2025-05-03T01:13:42","slug":"adaboost","status":"publish","type":"post","link":"https:\/\/www.xuzhe.tj.cn\/index.php\/2024\/08\/13\/adaboost\/","title":{"rendered":"AdaBoost \u7b97\u6cd5\u7814\u7a76\u8fdb\u5c55\u4e0e\u5c55\u671b"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u8bba\u6587\u7b80\u4ecb<\/h2>\n\n\n<p>\u82f1\u6587\u9898\u76ee\uff1aAdvance and Prospects of AdaBoost Algorithm<\/p>\n\n\n<p>\u4e2d\u6587\u9898\u76ee\uff1aAdaBoost \u7b97\u6cd5\u7814\u7a76\u8fdb\u5c55\u4e0e\u5c55\u671b<\/p>\n\n\n<p>\u4f5c\u8005\uff1a\u66f9\u83b9, \u82d7\u542f\u5e7f, \u5218\u5bb6\u8fb0, \u9ad8\u7433<\/p>\n\n\n<p>\u53d1\u8868\u671f\u520a\u6216\u4f1a\u8bae\uff1a\u300a\u81ea\u52a8\u5316\u5b66\u62a5\u300b<\/p>\n\n\n<p>\u53d1\u8868\u65e5\u671f\uff1a2013\u5e746\u6708<\/p>\n\n\n<p>AdaBoost\u7b97\u6cd5\u4f5c\u4e3a\u6700\u6210\u529f\u7684Boosting\u7b97\u6cd5\u4e4b\u4e00\uff0c\u56e0\u5176\u80fd\u591f\u5c06\u5f31\u5206\u7c7b\u5668\u63d0\u5347\u4e3a\u5f3a\u5206\u7c7b\u5668\u800c\u5728\u673a\u5668\u5b66\u4e60\u9886\u57df\u4e2d\u53d6\u5f97\u4e86\u5e7f\u6cdb\u5e94\u7528\u3002\u7136\u800c\uff0c\u968f\u7740\u7b97\u6cd5\u7684\u5e7f\u6cdb\u5e94\u7528\u548c\u6df1\u5165\u7814\u7a76\uff0cAdaBoost\u5728\u8bad\u7ec3\u8bef\u5dee\u3001\u6cdb\u5316\u80fd\u529b\u3001\u7406\u8bba\u5206\u6790\u6a21\u578b\u7b49\u65b9\u9762\u4ecd\u5b58\u5728\u8bb8\u591a\u503c\u5f97\u63a2\u8ba8\u7684\u95ee\u9898\u3002\u672c\u6587\u65e8\u5728\u7cfb\u7edf\u5730\u603b\u7ed3AdaBoost\u7b97\u6cd5\u7684\u53d1\u5c55\u5386\u7a0b\u3001\u7406\u8bba\u57fa\u7840\u53ca\u5176\u53d8\u79cd\u7b97\u6cd5\uff0c\u5e76\u63a2\u8ba8\u8be5\u9886\u57df\u672a\u6765\u7684\u7814\u7a76\u65b9\u5411\uff0c\u4e3a\u76f8\u5173\u7814\u7a76\u4eba\u5458\u63d0\u4f9b\u6709\u7528\u7684\u7814\u7a76\u7ebf\u7d22\u3002<\/p>\n\n<!--more-->\n\n<h2 class=\"wp-block-heading\">\u7ae0\u8282<\/h2>\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u7ae0\uff1a\u5f15\u8a00<\/h3>\n\n\n<ul class=\"wp-block-list\">\n    <li><strong>\u5185\u5bb9\u6982\u8ff0<\/strong>\uff1a\u672c\u7ae0\u7b80\u8981\u4ecb\u7ecd\u4e86Boosting\u7b97\u6cd5\u7684\u8d77\u6e90\uff0c\u91cd\u70b9\u63d0\u5230AdaBoost\u4f5c\u4e3a\u6700\u6210\u529f\u7684Boosting\u7b97\u6cd5\u4e4b\u4e00\u7684\u7406\u8bba\u57fa\u7840\u4e0e\u5e94\u7528\u4ef7\u503c\uff0c\u5e76\u8bf4\u660e\u4e86\u672c\u6587\u7684\u7814\u7a76\u52a8\u673a\u548c\u76ee\u7684\u3002<br><\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u7ae0\uff1aAdaBoost\u7b97\u6cd5\u6982\u8ff0<\/h3>\n\n\n<ul class=\"wp-block-list\">\n    <li><strong>\u5185\u5bb9\u6982\u8ff0<\/strong>\uff1a\u8be6\u7ec6\u4ecb\u7ecd\u4e86Boosting\u95ee\u9898\u7684\u8d77\u6e90\uff0cAdaBoost\u7b97\u6cd5\u7684\u8bbe\u8ba1\u601d\u60f3\uff0c\u4ee5\u53ca\u8be5\u7b97\u6cd5\u7684\u6838\u5fc3\u673a\u5236\u3002\u5305\u62ec\u4ece\u5728\u7ebf\u5206\u914d\u95ee\u9898\u5230AdaBoost\u7b97\u6cd5\u7684\u63a8\u5bfc\u8fc7\u7a0b\uff0c\u5e76\u901a\u8fc7\u4f2a\u4ee3\u7801\u89e3\u91ca\u4e86\u7b97\u6cd5\u7684\u6267\u884c\u6b65\u9aa4\u3002<br><\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u7ae0\uff1aAdaBoost\u7b97\u6cd5\u7684\u8bef\u5dee\u5206\u6790<\/h3>\n\n\n<ul class=\"wp-block-list\">\n    <li><strong>\u5185\u5bb9\u6982\u8ff0<\/strong>\uff1a\u672c\u7ae0\u91cd\u70b9\u5206\u6790\u4e86AdaBoost\u7b97\u6cd5\u7684\u8bad\u7ec3\u8bef\u5dee\u548c\u6cdb\u5316\u8bef\u5dee\u3002\u8ba8\u8bba\u4e86\u4e0d\u540c\u7684\u8bef\u5dee\u754c\u9650\u516c\u5f0f\u53ca\u5176\u63a8\u5bfc\u8fc7\u7a0b\uff0c\u63a2\u8ba8\u4e86AdaBoost\u7b97\u6cd5\u7684\u8bad\u7ec3\u8bef\u5dee\u5feb\u901f\u4e0b\u964d\u7684\u539f\u56e0\uff0c\u4ee5\u53ca\u6cdb\u5316\u8bef\u5dee\u4e0e\u5206\u7c7b\u95f4\u9694\u5206\u5e03\u7684\u5173\u7cfb\u3002<br><\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u56db\u7ae0\uff1aAdaBoost\u7b97\u6cd5\u7684\u4e0d\u540c\u7406\u8bba\u5206\u6790\u6a21\u578b<\/h3>\n\n\n<ul class=\"wp-block-list\">\n    <li><strong>\u5185\u5bb9\u6982\u8ff0<\/strong>\uff1a\u672c\u7ae0\u4ecb\u7ecd\u4e86\u591a\u79cd\u7528\u4e8e\u5206\u6790AdaBoost\u7b97\u6cd5\u7684\u7406\u8bba\u6a21\u578b\uff0c\u5305\u62ec\u504f\u5dee-\u65b9\u5dee\u5206\u89e3\u3001\u51fd\u6570\u7a7a\u95f4\u68af\u5ea6\u4e0b\u964d\u6a21\u578b\u3001\u524d\u5411\u53ef\u52a0\u5206\u6b65\u6a21\u578b\u7b49\u3002\u6bcf\u4e2a\u6a21\u578b\u90fd\u6709\u76f8\u5e94\u7684\u89e3\u91ca\u548c\u5e94\u7528\u5b9e\u4f8b\uff0c\u540c\u65f6\u5c55\u793a\u4e86\u5728\u8fd9\u4e9b\u6a21\u578b\u57fa\u7840\u4e0a\u53d1\u5c55\u51fa\u7684AdaBoost\u53d8\u79cd\u7b97\u6cd5\u3002<br><\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e94\u7ae0\uff1a\u591a\u5206\u7c7bAdaBoost\u7b97\u6cd5<\/h3>\n\n\n<ul class=\"wp-block-list\">\n    <li><strong>\u5185\u5bb9\u6982\u8ff0<\/strong>\uff1a\u672c\u7ae0\u4e13\u95e8\u8ba8\u8bba\u4e86AdaBoost\u7b97\u6cd5\u5728\u591a\u5206\u7c7b\u95ee\u9898\u4e2d\u7684\u5e94\u7528\u4e0e\u63a8\u5e7f\u3002\u5305\u62ec\u901a\u8fc7\u4e8c\u5206\u7c7b\u62c6\u89e3\u5b9e\u73b0\u591a\u5206\u7c7b\u7684\u65b9\u6cd5\uff08\u5982\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u5176\u4f59\u3001\u7ea0\u9519\u8f93\u51fa\u7f16\u7801\u7b49\uff09\uff0c\u4ee5\u53ca\u76f4\u63a5\u591a\u5206\u7c7b\u7684AdaBoost\u7b97\u6cd5\u3002\u5206\u6790\u4e86\u591a\u5206\u7c7b\u95ee\u9898\u4e2d\u5f31\u5206\u7c7b\u5668\u6761\u4ef6\u7684\u91cd\u8981\u6027\u548c\u6311\u6218\u3002<br><\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u516d\u7ae0\uff1aAdaBoost\u7b97\u6cd5\u7684\u5e94\u7528<\/h3>\n\n\n<ul class=\"wp-block-list\">\n    <li><strong>\u5185\u5bb9\u6982\u8ff0<\/strong>\uff1a\u672c\u7ae0\u603b\u7ed3\u4e86AdaBoost\u7b97\u6cd5\u5728\u591a\u4e2a\u5b9e\u9645\u5e94\u7528\u9886\u57df\u7684\u6210\u529f\u6848\u4f8b\uff0c\u5982\u624b\u5199\u5b57\u4f53\u8bc6\u522b\u3001\u4eba\u8138\u68c0\u6d4b\u3001\u6587\u672c\u5206\u7c7b\u4e0e\u8fc7\u6ee4\u3001\u4fe1\u606f\u68c0\u7d22\u3001\u4ee3\u4ef7\u654f\u611f\u5b66\u4e60\u7b49\u3002\u901a\u8fc7\u8fd9\u4e9b\u5e94\u7528\u5b9e\u4f8b\u5c55\u793a\u4e86AdaBoost\u7b97\u6cd5\u7684\u5e7f\u6cdb\u5e94\u7528\u4ef7\u503c\u3002<br><\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e03\u7ae0\uff1a\u603b\u7ed3\u4e0e\u5c55\u671b<\/h3>\n\n\n<ul class=\"wp-block-list\">\n    <li><strong>\u5185\u5bb9\u6982\u8ff0<\/strong>\uff1a\u672c\u7ae0\u603b\u7ed3\u4e86AdaBoost\u7b97\u6cd5\u7684\u7814\u7a76\u6210\u679c\uff0c\u6307\u51fa\u4e86\u7b97\u6cd5\u7684\u4f18\u70b9\u4e0e\u4e0d\u8db3\uff0c\u5e76\u5bf9\u672a\u6765\u7684\u7814\u7a76\u65b9\u5411\u8fdb\u884c\u4e86\u5c55\u671b\u3002\u63d0\u51fa\u4e86\u8fdb\u4e00\u6b65\u4f18\u5316\u7b97\u6cd5\u6cdb\u5316\u8bef\u5dee\u754c\u3001\u63d0\u5347\u6297\u566a\u58f0\u80fd\u529b\u3001\u6539\u8fdb\u591a\u5206\u7c7b\u7b97\u6cd5\u7b49\u7814\u7a76\u8bae\u9898\u3002<br><\/li>\n<\/ul>\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u4e9b\u95ee\u9898<\/h2>\n\n\n<h3 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u201c\u5728\u7ebf\u5206\u914d\u95ee\u9898\u201d\uff0c \u4ee5\u53ca\u5176\u4e0eadaboost\u7684\u5173\u7cfb<\/h3>\n\n\n<p>\u5728\u7ebf\u5206\u914d\u95ee\u9898\u7b80\u4ecb<\/p>\n\n\n<p>\u5728\u7ebf\u5206\u914d\u95ee\u9898\uff08Online Allocation Problem\uff09\u662f\u6307\u5728\u4e00\u7cfb\u5217\u51b3\u7b56\u8fc7\u7a0b\u4e2d\uff0c\u5982\u4f55\u52a8\u6001\u5730\u5206\u914d\u6709\u9650\u8d44\u6e90\uff0c\u4ee5\u6700\u5c0f\u5316\u635f\u5931\u6216\u6700\u5927\u5316\u6536\u76ca\u3002\u8be5\u95ee\u9898\u901a\u5e38\u5728\u52a8\u6001\u73af\u5883\u4e2d\u8fdb\u884c\uff0c\u5373\u5728\u6bcf\u4e00\u4e2a\u51b3\u7b56\u6b65\u9aa4\u4e2d\uff0c\u51b3\u7b56\u8005\u6839\u636e\u5f53\u524d\u53ef\u7528\u7684\u4fe1\u606f\u8fdb\u884c\u8d44\u6e90\u5206\u914d\uff0c\u800c\u672a\u6765\u7684\u60c5\u51b5\u53ef\u80fd\u672a\u77e5\u6216\u4e0d\u53ef\u9884\u6d4b\u3002<\/p>\n\n\n<p>\u5177\u4f53\u6765\u8bf4\uff0c\u5728\u7ebf\u5206\u914d\u95ee\u9898\u53ef\u4ee5\u63cf\u8ff0\u4e3a\uff1a\u4e00\u4e2a\u4ee3\u7406\uff08Agent\uff09\u5728\u591a\u4e2a\u65f6\u95f4\u6b65\uff08(t = 1, 2, dots, T)\uff09\u5185\uff0c\u5fc5\u987b\u6839\u636e\u5f53\u524d\u7684\u6743\u503c\u5206\u5e03\u5728\u82e5\u5e72\u7b56\u7565\uff08\u5b50\u7b56\u7565\uff09\u4e4b\u95f4\u8fdb\u884c\u8d44\u6e90\u5206\u914d\u3002\u6bcf\u4e2a\u65f6\u95f4\u6b65\uff0c\u4ee3\u7406\u9009\u62e9\u4e00\u4e2a\u7b56\u7565\u5e76\u53d7\u5230\u67d0\u79cd\u635f\u5931\u3002\u76ee\u6807\u662f\u5728\u6240\u6709\u65f6\u95f4\u6b65\u5185\uff0c\u4f7f\u5f97\u603b\u635f\u5931\u6700\u5c0f\u5316\u3002\u901a\u5e38\uff0c\u7b56\u7565\u7684\u9009\u62e9\u4f1a\u4f9d\u636e\u4e4b\u524d\u7684\u635f\u5931\u5386\u53f2\u8fdb\u884c\u8c03\u6574\uff0c\u4ee5\u5e94\u5bf9\u672a\u6765\u53ef\u80fd\u51fa\u73b0\u7684\u53d8\u5316\u3002<\/p>\n\n\n<p>\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e0eAdaBoost\u7684\u5173\u7cfb<\/p>\n\n\n<p>AdaBoost\u7b97\u6cd5\u7684\u8bbe\u8ba1\u53d7\u5230\u5728\u7ebf\u5206\u914d\u95ee\u9898\u7684\u542f\u53d1\uff0c\u5c24\u5176\u662f\u5728\u8d44\u6e90\u5206\u914d\u7b56\u7565\u548c\u52a0\u6743\u6295\u7968\u7b56\u7565\u4e4b\u95f4\u5b58\u5728\u6df1\u5c42\u7684\u8054\u7cfb\u3002<\/p>\n\n\n<p>\u5728AdaBoost\u7b97\u6cd5\u4e2d\uff0c\u201c\u8d44\u6e90\u201d\u53ef\u4ee5\u7406\u89e3\u4e3a\u8bad\u7ec3\u6837\u672c\u7684\u6743\u503c\u5206\u5e03\uff0c\u201c\u7b56\u7565\u201d\u5219\u5bf9\u5e94\u4e8e\u6bcf\u4e00\u8f6e\u8fed\u4ee3\u4e2d\u9009\u62e9\u7684\u5f31\u5206\u7c7b\u5668\u3002AdaBoost\u901a\u8fc7\u8c03\u6574\u6837\u672c\u7684\u6743\u503c\u5206\u5e03\uff0c\u4f7f\u5f97\u6bcf\u4e00\u8f6e\u8fed\u4ee3\u751f\u6210\u7684\u5f31\u5206\u7c7b\u5668\u80fd\u591f\u66f4\u597d\u5730\u805a\u7126\u4e8e\u90a3\u4e9b\u88ab\u524d\u4e00\u8f6e\u5f31\u5206\u7c7b\u5668\u9519\u5206\u7684\u6837\u672c\u3002\u901a\u8fc7\u4e0d\u65ad\u8c03\u6574\u6837\u672c\u6743\u503c\u5206\u5e03\uff0cAdaBoost\u9010\u6b65\u6784\u5efa\u8d77\u4e00\u4e2a\u5f3a\u5927\u7684\u5206\u7c7b\u5668\u96c6\u5408\u3002<\/p>\n\n\n<p>\u5177\u4f53\u800c\u8a00\uff0cAdaBoost\u7684\u6838\u5fc3\u601d\u60f3\u53ef\u4ee5\u89c6\u4e3a\u5728\u7ebf\u5206\u914d\u95ee\u9898\u5728\u5206\u7c7b\u4efb\u52a1\u4e2d\u7684\u4e00\u4e2a\u5177\u4f53\u5b9e\u73b0\uff1a<\/p>\n\n\n<ol class=\"wp-block-list\">\n    <li><strong>\u6837\u672c\u6743\u503c\u5206\u5e03\u7684\u66f4\u65b0<\/strong>\uff1a\u5728\u6bcf\u4e00\u8f6e\u8fed\u4ee3\u4e2d\uff0cAdaBoost\u6839\u636e\u524d\u4e00\u8f6e\u5f31\u5206\u7c7b\u5668\u7684\u8868\u73b0\uff0c\u8c03\u6574\u6837\u672c\u7684\u6743\u503c\u5206\u5e03\u3002\u9519\u5206\u6837\u672c\u7684\u6743\u503c\u4f1a\u88ab\u589e\u52a0\uff0c\u4f7f\u5f97\u4e0b\u4e00\u8f6e\u7684\u5f31\u5206\u7c7b\u5668\u66f4\u52a0\u5173\u6ce8\u8fd9\u4e9b\u96be\u4ee5\u5206\u7c7b\u7684\u6837\u672c\u3002\u8fd9\u7c7b\u4f3c\u4e8e\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e2d\u6839\u636e\u5386\u53f2\u635f\u5931\u8c03\u6574\u8d44\u6e90\u5206\u914d\u7684\u7b56\u7565\u3002<br><\/li>\n    <li><strong>\u5f31\u5206\u7c7b\u5668\u7684\u7ec4\u5408<\/strong>\uff1a\u5728\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e2d\uff0c\u8d44\u6e90\u5206\u914d\u7684\u7ed3\u679c\u901a\u5e38\u7531\u6240\u6709\u7b56\u7565\u7684\u52a0\u6743\u7ec4\u5408\u6765\u51b3\u5b9a\u3002\u5728AdaBoost\u4e2d\uff0c\u6700\u7ec8\u7684\u5f3a\u5206\u7c7b\u5668\u662f\u901a\u8fc7\u5bf9\u591a\u4e2a\u5f31\u5206\u7c7b\u5668\u7684\u52a0\u6743\u6295\u7968\u7ec4\u5408\u800c\u6210\u7684\uff0c\u6bcf\u4e2a\u5f31\u5206\u7c7b\u5668\u7684\u6743\u503c\u53d6\u51b3\u4e8e\u5176\u5206\u7c7b\u8bef\u5dee\u7387\u3002<br><\/li>\n    <li><strong>\u635f\u5931\u7684\u6700\u5c0f\u5316<\/strong>\uff1a\u5728\u7ebf\u5206\u914d\u95ee\u9898\u7684\u76ee\u6807\u662f\u6700\u5c0f\u5316\u7d2f\u79ef\u635f\u5931\u3002\u540c\u6837\u5730\uff0cAdaBoost\u901a\u8fc7\u9010\u6b65\u51cf\u5c11\u8bad\u7ec3\u8bef\u5dee\uff0c\u6700\u7ec8\u6784\u5efa\u51fa\u4e00\u4e2a\u5206\u7c7b\u8bef\u5dee\u8f83\u4f4e\u7684\u5f3a\u5206\u7c7b\u5668\uff0c\u4ee5\u671f\u6700\u5c0f\u5316\u5206\u7c7b\u635f\u5931\u3002<br><\/li>\n<\/ol>\n\n\n<p>\u56e0\u6b64\uff0c\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e3a\u7406\u89e3AdaBoost\u7b97\u6cd5\u7684\u8fd0\u884c\u673a\u5236\u63d0\u4f9b\u4e86\u4e00\u4e2a\u91cd\u8981\u7684\u7406\u8bba\u6846\u67b6\uff0c\u5e2e\u52a9\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u548c\u5982\u4f55\u901a\u8fc7\u6837\u672c\u6743\u503c\u7684\u52a8\u6001\u8c03\u6574\u6765\u63d0\u9ad8\u5206\u7c7b\u5668\u7684\u7cbe\u5ea6\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48AdaBoost\u7b97\u6cd5\u4f1a\u4ece\u5728\u7ebf\u5206\u914d\u95ee\u9898\u83b7\u5f97\u542f\u53d1<\/h3>\n\n\n<p>AdaBoost\u4e0e\u5728\u7ebf\u5206\u914d\u95ee\u9898\u7684\u542f\u53d1\u80cc\u666f<\/p>\n\n\n<p>\u80cc\u666f\u6982\u8ff0<\/p>\n\n\n<p>\u572820\u4e16\u7eaa90\u5e74\u4ee3\u521d\uff0c\u673a\u5668\u5b66\u4e60\u9886\u57df\u4e2d\uff0c\u5982\u4f55\u5c06\u4e00\u4e2a\u8868\u73b0\u8f83\u5f31\u7684\u5b66\u4e60\u7b97\u6cd5\uff08\u5373\u5f31\u5206\u7c7b\u5668\uff09\u63d0\u5347\u4e3a\u4e00\u4e2a\u5f3a\u5927\u7684\u5b66\u4e60\u7b97\u6cd5\uff08\u5373\u5f3a\u5206\u7c7b\u5668\uff09\u6210\u4e3a\u4e86\u4e00\u4e2a\u70ed\u95e8\u7684\u7814\u7a76\u95ee\u9898\u3002\u8fd9\u4e00\u95ee\u9898\u7684\u6838\u5fc3\u5728\u4e8e\u627e\u5230\u4e00\u79cd\u65b9\u6cd5\uff0c\u4f7f\u5f97\u5373\u4f7f\u662f\u4e00\u4e2a\u53ea\u6bd4\u968f\u673a\u731c\u6d4b\u7565\u5f3a\u7684\u5206\u7c7b\u5668\uff0c\u4e5f\u80fd\u591f\u901a\u8fc7\u67d0\u79cd\u673a\u5236\u63d0\u5347\u5176\u6574\u4f53\u5206\u7c7b\u7cbe\u5ea6\u3002<\/p>\n\n\n<p>\u5728\u6b64\u80cc\u666f\u4e0b\uff0c\u7814\u7a76\u8005\u4eec\u5f00\u59cb\u63a2\u7d22\u5404\u79cd\u65b9\u6cd5\u6765\u63d0\u9ad8\u5206\u7c7b\u5668\u7684\u6027\u80fd\u3002\u7279\u522b\u662f\uff0c\u5728\u7814\u7a76\u589e\u5f3a\u5b66\u4e60\uff08Boosting\uff09\u95ee\u9898\u65f6\uff0c\u7814\u7a76\u8005\u53d1\u73b0\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e0eBoosting\u95ee\u9898\u4e4b\u95f4\u6709\u7740\u6df1\u523b\u7684\u8054\u7cfb\u3002<\/p>\n\n\n<p>\u5728\u7ebf\u5206\u914d\u95ee\u9898\u7684\u542f\u53d1<\/p>\n\n\n<p>\u5728\u7ebf\u5206\u914d\u95ee\u9898\u6d89\u53ca\u5982\u4f55\u5728\u591a\u4e2a\u7b56\u7565\u4e4b\u95f4\u52a8\u6001\u5730\u5206\u914d\u8d44\u6e90\uff0c\u4ee5\u6700\u5c0f\u5316\u635f\u5931\u6216\u6700\u5927\u5316\u6536\u76ca\u3002\u8be5\u95ee\u9898\u7684\u6838\u5fc3\u601d\u60f3\u662f\uff0c\u6839\u636e\u5148\u524d\u7684\u8868\u73b0\u548c\u7ed3\u679c\u4e0d\u65ad\u8c03\u6574\u7b56\u7565\u7684\u6743\u91cd\uff0c\u4ee5\u63d0\u9ad8\u672a\u6765\u51b3\u7b56\u7684\u6548\u7387\u3002<\/p>\n\n\n<p>Freund\u548cSchapire\u5728\u7814\u7a76Boosting\u95ee\u9898\u65f6\u610f\u8bc6\u5230\uff0c\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e2d\u8d44\u6e90\u5206\u914d\u7684\u601d\u60f3\u53ef\u4ee5\u76f4\u63a5\u5e94\u7528\u4e8e\u5f31\u5206\u7c7b\u5668\u7684\u8bad\u7ec3\u8fc7\u7a0b\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u4ed6\u4eec\u8ba4\u4e3a\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u6837\u672c\u7684\u6743\u503c\u5206\u5e03\uff0c\u4f7f\u5f97\u6bcf\u4e00\u8f6e\u8bad\u7ec3\u7684\u5f31\u5206\u7c7b\u5668\u80fd\u591f\u66f4\u52a0\u5173\u6ce8\u90a3\u4e9b\u96be\u4ee5\u5206\u7c7b\u7684\u6837\u672c\u3002\u8fd9\u4e0e\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e2d\u7684\u8d44\u6e90\u91cd\u65b0\u5206\u914d\u7b56\u7565\u975e\u5e38\u7c7b\u4f3c\uff1a\u5f53\u67d0\u4e00\u7b56\u7565\u8868\u73b0\u4e0d\u4f73\u65f6\uff0c\u8d44\u6e90\uff08\u6216\u6743\u91cd\uff09\u5c06\u66f4\u591a\u5730\u5206\u914d\u7ed9\u5176\u4ed6\u66f4\u6709\u6548\u7684\u7b56\u7565\u3002<\/p>\n\n\n<p>\u5728\u7ebf\u5206\u914d\u95ee\u9898\u5bf9AdaBoost\u7684\u76f4\u63a5\u5f71\u54cd<\/p>\n\n\n<p>\u5728\u7ebf\u5206\u914d\u95ee\u9898\u5bf9AdaBoost\u7b97\u6cd5\u7684\u8bbe\u8ba1\u4ea7\u751f\u4e86\u76f4\u63a5\u5f71\u54cd\uff0c\u5c24\u5176\u662f\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n<ol class=\"wp-block-list\">\n    <li><strong>\u6743\u503c\u8c03\u6574\u673a\u5236<\/strong>\uff1a\u5728\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e2d\uff0c\u7b56\u7565\u7684\u6743\u91cd\u4f1a\u6839\u636e\u5176\u5386\u53f2\u8868\u73b0\u8fdb\u884c\u8c03\u6574\u3002\u540c\u6837\u5730\uff0c\u5728AdaBoost\u4e2d\uff0c\u6837\u672c\u7684\u6743\u503c\u5206\u5e03\u5728\u6bcf\u4e00\u8f6e\u8fed\u4ee3\u540e\u90fd\u4f1a\u6839\u636e\u5f31\u5206\u7c7b\u5668\u7684\u8868\u73b0\u8fdb\u884c\u66f4\u65b0\u3002\u90a3\u4e9b\u88ab\u9519\u5206\u7684\u6837\u672c\u5c06\u83b7\u5f97\u66f4\u9ad8\u7684\u6743\u91cd\uff0c\u4ece\u800c\u4f7f\u5f97\u4e0b\u4e00\u8f6e\u8bad\u7ec3\u66f4\u52a0\u5173\u6ce8\u8fd9\u4e9b\u96be\u4ee5\u5206\u7c7b\u7684\u6837\u672c\u3002<br><\/li>\n    <li><strong>\u7d2f\u79ef\u635f\u5931\u6700\u5c0f\u5316<\/strong>\uff1a\u5728\u7ebf\u5206\u914d\u95ee\u9898\u7684\u76ee\u6807\u662f\u901a\u8fc7\u6743\u503c\u8c03\u6574\u6765\u6700\u5c0f\u5316\u7d2f\u79ef\u635f\u5931\u3002\u540c\u6837\uff0cAdaBoost\u901a\u8fc7\u5728\u6bcf\u4e00\u8f6e\u8fed\u4ee3\u4e2d\u51cf\u5c11\u9519\u8bef\u5206\u7c7b\u6837\u672c\u7684\u6570\u91cf\uff0c\u9010\u6b65\u51cf\u5c11\u8bad\u7ec3\u8bef\u5dee\uff0c\u6700\u7ec8\u6784\u5efa\u51fa\u4e00\u4e2a\u5177\u6709\u8f83\u4f4e\u9519\u8bef\u7387\u7684\u5f3a\u5206\u7c7b\u5668\u3002<br><\/li>\n    <li><strong>\u7b56\u7565\u7ec4\u5408\u7684\u601d\u60f3<\/strong>\uff1a\u5728\u7ebf\u5206\u914d\u95ee\u9898\u901a\u5e38\u4f9d\u8d56\u4e8e\u591a\u4e2a\u7b56\u7565\u7684\u7ec4\u5408\u6765\u83b7\u5f97\u6700\u4f73\u7ed3\u679c\u3002\u8fd9\u4e0eAdaBoost\u901a\u8fc7\u5bf9\u591a\u4e2a\u5f31\u5206\u7c7b\u5668\u7684\u52a0\u6743\u7ec4\u5408\u6765\u6784\u5efa\u5f3a\u5206\u7c7b\u5668\u7684\u601d\u60f3\u662f\u4e00\u81f4\u7684\u3002<br><\/li>\n<\/ol>\n\n\n<p>\u5f53\u65f6\u7684\u7814\u7a76\u80cc\u666f<\/p>\n\n\n<p>\u5728AdaBoost\u63d0\u51fa\u4e4b\u524d\uff0c\u589e\u5f3a\u5b66\u4e60\u7684\u7814\u7a76\u4e3b\u8981\u96c6\u4e2d\u5728\u5982\u4f55\u901a\u8fc7\u91cd\u65b0\u91c7\u6837\u8bad\u7ec3\u96c6\u6216\u8c03\u6574\u5206\u7c7b\u5668\u53c2\u6570\u6765\u63d0\u5347\u5206\u7c7b\u5668\u7684\u6027\u80fd\u3002\u65e9\u671f\u7684Boosting\u7b97\u6cd5\uff0c\u5982Schapire\u57281990\u5e74\u63d0\u51fa\u7684\u7b2c\u4e00\u4e2aBoosting\u7b97\u6cd5\uff0c\u867d\u7136\u7406\u8bba\u4e0a\u8bc1\u660e\u4e86\u5f31\u5206\u7c7b\u5668\u53ef\u4ee5\u88ab\u63d0\u5347\u4e3a\u5f3a\u5206\u7c7b\u5668\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u5374\u9762\u4e34\u7740\u4e00\u4e9b\u56f0\u96be\uff0c\u7279\u522b\u662f\u7b97\u6cd5\u590d\u6742\u6027\u548c\u5bf9\u5206\u7c7b\u5668\u9519\u8bef\u7387\u7684\u8981\u6c42\u3002<\/p>\n\n\n<p>Freund\u548cSchapire\u5728\u66f4\u6df1\u5165\u7684\u7814\u7a76\u4e2d\uff0c\u7ed3\u5408\u5728\u7ebf\u5206\u914d\u95ee\u9898\u7684\u601d\u60f3\uff0c\u63d0\u51fa\u4e86AdaBoost\u7b97\u6cd5\u3002\u8fd9\u4e2a\u7b97\u6cd5\u4e0d\u518d\u4f9d\u8d56\u4e8e\u5bf9\u5f31\u5206\u7c7b\u5668\u9519\u8bef\u7387\u7684\u5148\u9a8c\u77e5\u8bc6\uff0c\u80fd\u591f\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u8868\u73b0\u51fa\u8272\uff0c\u5e76\u4e14\u5177\u6709\u8f83\u5f3a\u7684\u7406\u8bba\u57fa\u7840\u3002<\/p>\n\n\n<p>\u56e0\u6b64\uff0c\u5728\u7ebf\u5206\u914d\u95ee\u9898\u4e3aAdaBoost\u7b97\u6cd5\u63d0\u4f9b\u4e86\u5173\u952e\u7684\u542f\u53d1\uff0c\u4f7f\u5f97\u8be5\u7b97\u6cd5\u80fd\u591f\u5728\u6ca1\u6709\u4e25\u683c\u5148\u9a8c\u77e5\u8bc6\u7684\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u52a8\u6001\u8c03\u6574\u6837\u672c\u6743\u503c\u5b9e\u73b0\u5206\u7c7b\u5668\u6027\u80fd\u7684\u663e\u8457\u63d0\u5347\u3002\u8fd9\u4e00\u7ed3\u5408\u4e3a\u589e\u5f3a\u5b66\u4e60\u7406\u8bba\u7684\u53d1\u5c55\u5960\u5b9a\u4e86\u57fa\u7840\uff0c\u5e76\u5728\u673a\u5668\u5b66\u4e60\u9886\u57df\u4ea7\u751f\u4e86\u6df1\u8fdc\u7684\u5f71\u54cd\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">PAC\u5b66\u4e60\u6846\u67b6\u53ca\u5176\u4e0eAdaBoost\u7b97\u6cd5\u4e4b\u95f4\u7684\u5173\u7cfb<\/h3>\n\n\n<p>PAC\u5b66\u4e60\u6846\u67b6\u7b80\u4ecb<\/p>\n\n\n<p>PAC\uff08Probably Approximately Correct\uff0c\u5927\u6982\u7387\u8fd1\u4f3c\u6b63\u786e\uff09\u5b66\u4e60\u6846\u67b6\u662f\u7531\u8ba1\u7b97\u673a\u79d1\u5b66\u5bb6Leslie Valiant\u57281984\u5e74\u63d0\u51fa\u7684\u4e00\u4e2a\u7406\u8bba\u6a21\u578b\uff0c\u7528\u4e8e\u5f62\u5f0f\u5316\u5730\u63cf\u8ff0\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u7684\u5b66\u4e60\u80fd\u529b\u3002PAC\u5b66\u4e60\u6846\u67b6\u7684\u6838\u5fc3\u601d\u60f3\u662f\uff1a\u4e00\u4e2a\u5b66\u4e60\u7b97\u6cd5\u5728\u9762\u5bf9\u6709\u9650\u7684\u6570\u636e\u6837\u672c\u65f6\uff0c\u80fd\u5426\u4ee5\u8f83\u9ad8\u7684\u6982\u7387\u8f93\u51fa\u4e00\u4e2a\u8fd1\u4f3c\u6b63\u786e\u7684\u5047\u8bbe\u3002<\/p>\n\n\n<p>PAC\u5b66\u4e60\u6846\u67b6\u7684\u4e3b\u8981\u6982\u5ff5<\/p>\n\n\n<ol class=\"wp-block-list\">\n    <li><strong>\u6837\u672c\u7a7a\u95f4\uff08X\uff09<\/strong>\uff1a\u8868\u793a\u6240\u6709\u53ef\u80fd\u8f93\u5165\u6570\u636e\u7684\u96c6\u5408\u3002<\/li>\n    <li><strong>\u6982\u5ff5\u7c7b\uff08C\uff09<\/strong>\uff1a\u8868\u793a\u5b66\u4e60\u7b97\u6cd5\u9700\u8981\u5b66\u4e60\u7684\u76ee\u6807\u6982\u5ff5\u7684\u96c6\u5408\u3002\u6982\u5ff5\u7c7b\u4e2d\u7684\u6bcf\u4e2a\u6982\u5ff5\u5bf9\u5e94\u4e8e\u6837\u672c\u7a7a\u95f4\u4e2d\u7684\u67d0\u4e2a\u5b50\u96c6\u3002<\/li>\n    <li><strong>\u5206\u5e03\uff08D\uff09<\/strong>\uff1a\u5b9a\u4e49\u5728\u6837\u672c\u7a7a\u95f4X\u4e0a\u7684\u56fa\u5b9a\u4f46\u672a\u77e5\u7684\u6982\u7387\u5206\u5e03\u3002\u8bad\u7ec3\u6570\u636e\u662f\u4ece\u8fd9\u4e2a\u5206\u5e03\u4e2d\u72ec\u7acb\u968f\u673a\u62bd\u53d6\u7684\u3002<\/li>\n    <li><strong>\u5047\u8bbe\u7a7a\u95f4\uff08H\uff09<\/strong>\uff1a\u5b66\u4e60\u7b97\u6cd5\u8f93\u51fa\u7684\u5047\u8bbe\uff08\u5373\u6a21\u578b\uff09\u7684\u96c6\u5408\u3002<\/li>\n    <li><strong>\u9519\u8bef\u7387\uff08ErrorD(h)\uff09<\/strong>\uff1a\u8868\u793a\u5047\u8bbeh\u5728\u5206\u5e03D\u4e0b\u7684\u771f\u5b9e\u9519\u8bef\u7387\uff0c\u5373\u5047\u8bbeh\u4e0e\u76ee\u6807\u6982\u5ff5c\u5728\u6837\u672c\u7a7a\u95f4\u4e0a\u4e0d\u4e00\u81f4\u7684\u6982\u7387\u3002<\/li>\n    <li><strong>PAC\u5b66\u4e60\u7b97\u6cd5<\/strong>\uff1a\u5982\u679c\u4e00\u4e2a\u5b66\u4e60\u7b97\u6cd5\u80fd\u591f\u4ee5\u9ad8\u6982\u7387\uff08\u81f3\u5c11\u4e3a\\(1-\\delta\\)\uff09\u8f93\u51fa\u4e00\u4e2a\u9519\u8bef\u7387\u5728\\(\\epsilon\\)\u4ee5\u5185\u7684\u5047\u8bbe\uff0c\u90a3\u4e48\u8fd9\u4e2a\u7b97\u6cd5\u88ab\u79f0\u4e3a\u662fPAC\u5b66\u4e60\u7684\u3002\u8fd9\u91cc\uff0c\\(\\epsilon\\)\u548c\\(\\delta\\)\u662f\u5f88\u5c0f\u7684\u5e38\u6570\uff0c\u5206\u522b\u8868\u793a\u5141\u8bb8\u7684\u9519\u8bef\u7387\u4e0a\u9650\u548c\u7b97\u6cd5\u5931\u8d25\u7684\u6982\u7387\u4e0a\u9650\u3002<br><\/li>\n<\/ol>\n\n\n<p>\u5728PAC\u6846\u67b6\u4e0b\uff0c\u4e00\u4e2a\u6982\u5ff5\u7c7bC\u662fPAC\u53ef\u5b66\u4e60\u7684\uff0c\u610f\u5473\u7740\u5b58\u5728\u4e00\u4e2a\u591a\u9879\u5f0f\u65f6\u95f4\u7684\u5b66\u4e60\u7b97\u6cd5\uff0c\u8be5\u7b97\u6cd5\u80fd\u591f\u4ee5\u5927\u6982\u7387\u8f93\u51fa\u4e00\u4e2a\u9519\u8bef\u7387\u5f88\u5c0f\u7684\u5047\u8bbe\u3002<\/p>\n\n\n<p>PAC\u5b66\u4e60\u6846\u67b6\u4e0eAdaBoost\u7684\u5173\u7cfb<\/p>\n\n\n<p>\u5f31\u5b66\u4e60\u4e0e\u5f3a\u5b66\u4e60\u7684\u6982\u5ff5<\/p>\n\n\n<p>\u5728PAC\u5b66\u4e60\u4e2d\uff0c\u6709\u4e24\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\uff1a\u5f31\u53ef\u5b66\u4e60\u548c\u5f3a\u53ef\u5b66\u4e60\u3002\u5f3a\u53ef\u5b66\u4e60\u610f\u5473\u7740\u5b66\u4e60\u7b97\u6cd5\u80fd\u591f\u8f93\u51fa\u4e00\u4e2a\u9519\u8bef\u7387\u5f88\u5c0f\u7684\u5047\u8bbe\uff0c\u800c\u5f31\u53ef\u5b66\u4e60\u610f\u5473\u7740\u5b66\u4e60\u7b97\u6cd5\u53ea\u9700\u8f93\u51fa\u4e00\u4e2a\u6bd4\u968f\u673a\u731c\u6d4b\u7565\u597d\u7684\u5047\u8bbe\uff08\u5373\u9519\u8bef\u7387\u7a0d\u5fae\u4f4e\u4e8e0.5\u7684\u5047\u8bbe\uff09\u3002<\/p>\n\n\n<p>\u57281988\u5e74\uff0cMichael Kearns\u7b49\u4eba\u5728\u7814\u7a76PAC\u5b66\u4e60\u65f6\u63d0\u51fa\u4e86\u4e00\u4e2a\u91cd\u8981\u7684\u95ee\u9898\uff1a<strong>\u5f31\u53ef\u5b66\u4e60\u662f\u5426\u7b49\u4ef7\u4e8e\u5f3a\u53ef\u5b66\u4e60\uff1f<\/strong> \u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u4e00\u4e2a\u5f31\u5b66\u4e60\u7b97\u6cd5\uff0c\u662f\u5426\u53ef\u4ee5\u901a\u8fc7\u67d0\u79cd\u65b9\u6cd5\u5c06\u5176\u63d0\u5347\u4e3a\u5f3a\u5b66\u4e60\u7b97\u6cd5\uff1f\u8fd9\u4e2a\u95ee\u9898\u7684\u7b54\u6848\u5960\u5b9a\u4e86Boosting\u7b97\u6cd5\uff08\u5305\u62ecAdaBoost\uff09\u7684\u7406\u8bba\u57fa\u7840\u3002<\/p>\n\n\n<p>AdaBoost\u7b97\u6cd5\u5982\u4f55\u5229\u7528PAC\u5b66\u4e60\u6846\u67b6<\/p>\n\n\n<p>AdaBoost\u7b97\u6cd5\u7684\u63d0\u51fa\uff0c\u6b63\u662f\u57fa\u4e8e\u5bf9\u4e0a\u8ff0\u95ee\u9898\u7684\u80af\u5b9a\u56de\u7b54\u3002Schapire\u57281990\u5e74\u901a\u8fc7\u6784\u9020\u6027\u65b9\u6cd5\u8bc1\u660e\u4e86\uff1a\u4e00\u4e2a\u6982\u5ff5\u7c7b\u662f\u5f31\u53ef\u5b66\u4e60\u7684\uff0c\u5f53\u4e14\u4ec5\u5f53\u5b83\u662f\u5f3a\u53ef\u5b66\u4e60\u7684\u3002\u8fd9\u610f\u5473\u7740\uff0c\u53ea\u8981\u627e\u5230\u4e00\u4e2a\u9519\u8bef\u7387\u7a0d\u4f4e\u4e8e0.5\u7684\u5f31\u5b66\u4e60\u7b97\u6cd5\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7\u67d0\u79cd\u65b9\u6cd5\uff08\u5373Boosting\uff09\u5c06\u5176\u63d0\u5347\u4e3a\u9519\u8bef\u7387\u63a5\u8fd1\u4e8e0\u7684\u5f3a\u5b66\u4e60\u7b97\u6cd5\u3002<\/p>\n\n\n<p>\u5728\u5177\u4f53\u7684\u64cd\u4f5c\u4e2d\uff0cAdaBoost\u901a\u8fc7\u52a0\u6743\u6295\u7968\u7684\u65b9\u5f0f\u5c06\u591a\u4e2a\u5f31\u5b66\u4e60\u5668\u7ec4\u5408\u6210\u4e00\u4e2a\u5f3a\u5b66\u4e60\u5668\u3002\u5b83\u901a\u8fc7\u52a8\u6001\u8c03\u6574\u8bad\u7ec3\u6837\u672c\u7684\u6743\u503c\uff0c\u4f7f\u5f97\u6bcf\u4e00\u8f6e\u8bad\u7ec3\u7684\u5f31\u5206\u7c7b\u5668\u90fd\u80fd\u591f\u66f4\u52a0\u5173\u6ce8\u90a3\u4e9b\u96be\u4ee5\u5206\u7c7b\u7684\u6837\u672c\uff0c\u4ece\u800c\u4e0d\u65ad\u63d0\u9ad8\u5206\u7c7b\u5668\u7684\u6574\u4f53\u7cbe\u5ea6\u3002\u8fd9\u6837\uff0c\u901a\u8fc7\u591a\u8f6e\u8fed\u4ee3\uff0cAdaBoost\u6700\u7ec8\u6784\u5efa\u51fa\u4e00\u4e2a\u5f3a\u5206\u7c7b\u5668\uff0c\u4f7f\u5f97PAC\u5b66\u4e60\u6846\u67b6\u4e2d\u7684\u201c\u5f3a\u53ef\u5b66\u4e60\u201d\u5f97\u4ee5\u5b9e\u73b0\u3002<\/p>\n\n\n<p>\u56e0\u6b64\uff0cPAC\u5b66\u4e60\u6846\u67b6\u4e3aAdaBoost\u7b97\u6cd5\u63d0\u4f9b\u4e86\u7406\u8bba\u57fa\u7840\u548c\u7814\u7a76\u52a8\u673a\u3002AdaBoost\u901a\u8fc7\u5c06PAC\u5b66\u4e60\u4e2d\u7684\u5f31\u5b66\u4e60\u63d0\u5347\u4e3a\u5f3a\u5b66\u4e60\uff0c\u89e3\u51b3\u4e86\u5b9e\u9645\u5e94\u7528\u4e2d\u76f4\u63a5\u6784\u9020\u5f3a\u5b66\u4e60\u5668\u7684\u56f0\u96be\uff0c\u6210\u4e3a\u673a\u5668\u5b66\u4e60\u9886\u57df\u4e2d\u6700\u6210\u529f\u7684Boosting\u7b97\u6cd5\u4e4b\u4e00\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">\u8bf7\u68b3\u7406 AdaBoost \u6cdb\u5316\u8bef\u5dee\u7814\u7a76\u7684\u6838\u5fc3\uff0c\u5373\u89e3\u91caAdaBoost\u7b97\u6cd5\u7684\u6cdb\u5316\u80fd\u529b\u4ece\u4f55\u800c\u6765 \u8fd9\u4e2a\u95ee\u9898\u7684\u63a2\u7d22\u8fc7\u7a0b<\/h3>\n\n\n<p>AdaBoost\u6cdb\u5316\u8bef\u5dee\u7814\u7a76\u7684\u6838\u5fc3\uff1a\u63a2\u7d22\u7b97\u6cd5\u6cdb\u5316\u80fd\u529b\u7684\u6765\u6e90<\/p>\n\n\n<p>AdaBoost\u7b97\u6cd5\u81ea\u63d0\u51fa\u4ee5\u6765\uff0c\u4ee5\u5176\u4f18\u5f02\u7684\u6027\u80fd\u5728\u591a\u4e2a\u5e94\u7528\u573a\u666f\u4e2d\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002\u7136\u800c\uff0c\u968f\u7740\u5bf9\u8be5\u7b97\u6cd5\u7684\u6df1\u5165\u7814\u7a76\uff0c\u5b66\u8005\u4eec\u53d1\u73b0AdaBoost\u7684\u4e00\u4e2a\u663e\u8457\u7279\u5f81\u662f\u5176\u5f3a\u5927\u7684\u6cdb\u5316\u80fd\u529b\uff0c\u5373\u5728\u8bad\u7ec3\u8bef\u5dee\u964d\u4f4e\u540e\uff0c\u6d4b\u8bd5\u8bef\u5dee\u4e5f\u4e0d\u65ad\u964d\u4f4e\u3002\u8fd9\u4e00\u73b0\u8c61\u5f15\u53d1\u4e86\u5927\u91cf\u7684\u7814\u7a76\uff0c\u8bd5\u56fe\u89e3\u91caAdaBoost\u7684\u6cdb\u5316\u80fd\u529b\u4ece\u4f55\u800c\u6765\u3002\u4ee5\u4e0b\u662f\u5bf9\u8fd9\u4e00\u95ee\u9898\u7684\u63a2\u7d22\u8fc7\u7a0b\u7684\u68b3\u7406\uff1a<\/p>\n\n\n<ol class=\"wp-block-list\">\n    <li>\u521d\u6b65\u5206\u6790\uff1a\u6cdb\u5316\u8bef\u5dee\u4e0e\u8bad\u7ec3\u8bef\u5dee\u7684\u5173\u7cfb<\/li>\n<\/ol>\n\n\n<p>\u5728AdaBoost\u7b97\u6cd5\u63d0\u51fa\u521d\u671f\uff0cFreund\u548cSchapire\u7b49\u4eba\u901a\u8fc7\u5bf9\u8bad\u7ec3\u8bef\u5dee\u7684\u5206\u6790\uff0c\u5f97\u51faAdaBoost\u5728\u6bcf\u4e00\u8f6e\u8fed\u4ee3\u4e2d\u751f\u6210\u7684\u5f31\u5206\u7c7b\u5668\u9519\u8bef\u7387\u4e0e\u6700\u7ec8\u5f3a\u5206\u7c7b\u5668\u7684\u8bad\u7ec3\u8bef\u5dee\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u4ed6\u4eec\u53d1\u73b0\uff0cAdaBoost\u7684\u8bad\u7ec3\u8bef\u5dee\u4ee5\u6307\u6570\u901f\u7387\u4e0b\u964d\uff0c\u4e14\u4e0d\u9700\u8981\u9884\u5148\u77e5\u9053\u5f31\u5206\u7c7b\u5668\u7684\u9519\u8bef\u7387\u3002<\/p>\n\n\n<p>\u7136\u800c\uff0c\u968f\u7740\u8bad\u7ec3\u8bef\u5dee\u9010\u6e10\u964d\u4f4e\uff0c\u5c24\u5176\u662f\u5728\u8bad\u7ec3\u8bef\u5dee\u51e0\u4e4e\u4e3a\u96f6\u7684\u60c5\u51b5\u4e0b\uff0c\u7406\u8bba\u4e0a\u5e94\u8be5\u51fa\u73b0\u8fc7\u62df\u5408\u73b0\u8c61\uff0c\u4f46\u5b9e\u9a8c\u7ed3\u679c\u5374\u8868\u660eAdaBoost\u7684\u6d4b\u8bd5\u8bef\u5dee\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4ecd\u5728\u964d\u4f4e\u3002\u8fd9\u4e00\u73b0\u8c61\u5f15\u53d1\u4e86\u5bf9AdaBoost\u6cdb\u5316\u80fd\u529b\u7684\u8fdb\u4e00\u6b65\u7814\u7a76\u3002<\/p>\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n    <li>\u5206\u7c7b\u95f4\u9694\u7406\u8bba\u7684\u5f15\u5165<\/li>\n<\/ol>\n\n\n<p>\u4e3a\u4e86\u66f4\u597d\u5730\u89e3\u91caAdaBoost\u7684\u6cdb\u5316\u80fd\u529b\uff0cSchapire\u7b49\u4eba\u5f15\u5165\u4e86\u5206\u7c7b\u95f4\u9694\uff08Margin\uff09\u7684\u6982\u5ff5\u3002\u5206\u7c7b\u95f4\u9694\u88ab\u5b9a\u4e49\u4e3a\u8bad\u7ec3\u6837\u672c\u5bf9\u5e94\u7684\u5206\u7c7b\u7ed3\u679c\u7684\u7f6e\u4fe1\u7a0b\u5ea6\uff0c\u95f4\u9694\u8d8a\u5927\uff0c\u5206\u7c7b\u7ed3\u679c\u8d8a\u6709\u4fe1\u5fc3\u3002<\/p>\n\n\n<p>\u4ed6\u4eec\u8bc1\u660e\u4e86AdaBoost\u7b97\u6cd5\u5728\u6bcf\u4e00\u8f6e\u8fed\u4ee3\u4e2d\uff0c\u5b9e\u9645\u4e0a\u662f\u5728\u589e\u5927\u96be\u4ee5\u5206\u7c7b\u6837\u672c\u7684\u5206\u7c7b\u95f4\u9694\u3002\u66f4\u5927\u7684\u5206\u7c7b\u95f4\u9694\u610f\u5473\u7740\u66f4\u4f4e\u7684\u6cdb\u5316\u8bef\u5dee\u3002\u56e0\u6b64\uff0c\u4ed6\u4eec\u5f97\u51fa\u4e86\u4e00\u4e2a\u91cd\u8981\u7ed3\u8bba\uff1aAdaBoost\u7684\u6cdb\u5316\u80fd\u529b\u6765\u6e90\u4e8e\u5b83\u9010\u6b65\u589e\u5927\u5206\u7c7b\u95f4\u9694\u7684\u8fc7\u7a0b\uff0c\u8fd9\u4f7f\u5f97\u5373\u4f7f\u5728\u8bad\u7ec3\u8bef\u5dee\u63a5\u8fd1\u4e8e\u96f6\u65f6\uff0c\u7b97\u6cd5\u4ecd\u7136\u5177\u6709\u826f\u597d\u7684\u6cdb\u5316\u6027\u80fd\u3002<\/p>\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n    <li>\u57fa\u4e8e\u6700\u5c0f\u5206\u7c7b\u95f4\u9694\u7684\u5206\u6790<\/li>\n<\/ol>\n\n\n<p>Breiman\u5728\u6b64\u57fa\u7840\u4e0a\u63d0\u51fa\u4e86\u4e00\u79cd\u65b0\u7684\u5206\u6790\u65b9\u6cd5\uff0c\u57fa\u4e8e\u6700\u5c0f\u5206\u7c7b\u95f4\u9694\uff08Minimum Margin\uff09\u6765\u7814\u7a76AdaBoost\u7684\u6cdb\u5316\u8bef\u5dee\u3002\u4ed6\u901a\u8fc7\u5b9e\u9a8c\u53d1\u73b0\uff0c\u76f4\u63a5\u4f18\u5316\u6700\u5c0f\u5206\u7c7b\u95f4\u9694\u7684Boosting\u7b97\u6cd5\uff08\u5982Arc-gv\uff09\u5e94\u8be5\u6bd4AdaBoost\u6709\u66f4\u597d\u7684\u6cdb\u5316\u80fd\u529b\u3002\u7136\u800c\uff0c\u5b9e\u9a8c\u7ed3\u679c\u5374\u663e\u793aArc-gv\u7684\u6d4b\u8bd5\u8bef\u5dee\u603b\u662f\u9ad8\u4e8eAdaBoost\u3002<\/p>\n\n\n<p>\u8fd9\u4e00\u7ed3\u679c\u5bf9Schapire\u7684\u5206\u7c7b\u95f4\u9694\u5206\u6790\u63d0\u51fa\u4e86\u6311\u6218\u3002Breiman\u8ba4\u4e3a\uff0c\u6700\u5c0f\u5206\u7c7b\u95f4\u9694\u5e76\u4e0d\u662f\u51b3\u5b9aAdaBoost\u6cdb\u5316\u80fd\u529b\u7684\u5173\u952e\u56e0\u7d20\uff0c\u5206\u7c7b\u95f4\u9694\u7684\u5206\u5e03\u53ef\u80fd\u6bd4\u6700\u5c0f\u5206\u7c7b\u95f4\u9694\u66f4\u91cd\u8981\u3002<\/p>\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n    <li>\u66f4\u7d27\u81f4\u7684\u6cdb\u5316\u8bef\u5dee\u754c\u63a2\u7d22<\/li>\n<\/ol>\n\n\n<p>\u4e3a\u4e86\u56de\u5e94Breiman\u7684\u8d28\u7591\uff0c\u5e76\u8fdb\u4e00\u6b65\u89e3\u91caAdaBoost\u7684\u6cdb\u5316\u80fd\u529b\uff0c\u7814\u7a76\u8005\u4eec\u7ee7\u7eed\u63a2\u7d22\u66f4\u7d27\u81f4\u7684\u6cdb\u5316\u8bef\u5dee\u754c\u3002\u4ed6\u4eec\u8bd5\u56fe\u8bc1\u660e\u662f\u5206\u7c7b\u95f4\u9694\u7684\u5206\u5e03\uff0c\u800c\u4e0d\u662f\u6700\u5c0f\u5206\u7c7b\u95f4\u9694\uff0c\u51b3\u5b9a\u4e86AdaBoost\u7684\u6cdb\u5316\u80fd\u529b\u30022006\u5e74\uff0cSchapire\u7b49\u4eba\u90e8\u5206\u4fee\u6b63\u4e86\u4e4b\u524d\u7684\u7ed3\u8bba\uff0c\u6307\u51faAdaBoost\u7684\u6cdb\u5316\u8bef\u5dee\u8fd8\u4e0e\u5b50\u5206\u7c7b\u5668\u7684\u590d\u6742\u5ea6\u6709\u5173\uff0c\u63d0\u51fa\u5728\u7814\u7a76\u5206\u7c7b\u95f4\u9694\u5bf9\u6cdb\u5316\u8bef\u5dee\u7684\u5f71\u54cd\u65f6\u5fc5\u987b\u56fa\u5b9a\u5b50\u5206\u7c7b\u5668\u7684\u590d\u6742\u5ea6\u3002<\/p>\n\n\n<p>\u6b64\u5916\uff0c\u7814\u7a76\u8005\u4eec\u6784\u9020\u4e86\u4e00\u79cd\u65b0\u7684\u5206\u7c7b\u95f4\u9694\u8861\u91cf\u6807\u51c6\u2014\u2014\u5e73\u8861\u5206\u7c7b\u95f4\u9694\uff08Equilibrium Margin\uff09\uff0c\u5e76\u8bc1\u660e\u4e86\u5b83\u4e0e\u6cdb\u5316\u8bef\u5dee\u4e4b\u95f4\u7684\u7d27\u5bc6\u5173\u7cfb\u3002\u901a\u8fc7\u8fd9\u4e00\u65b0\u7684\u5206\u6790\u65b9\u6cd5\uff0c\u7814\u7a76\u8005\u4eec\u53d1\u73b0\uff0c\u5c3d\u7ba1Arc-gv\u6709\u7740\u66f4\u5927\u7684\u6700\u5c0f\u5206\u7c7b\u95f4\u9694\uff0c\u4f46AdaBoost\u6709\u7740\u66f4\u4f18\u7684\u5e73\u8861\u5206\u7c7b\u95f4\u9694\uff0c\u56e0\u6b64\u5177\u6709\u66f4\u597d\u7684\u6cdb\u5316\u80fd\u529b\u3002<\/p>\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n    <li>\u76f4\u63a5\u4f18\u5316\u5206\u7c7b\u95f4\u9694\u5206\u5e03\u7684\u7814\u7a76<\/li>\n<\/ol>\n\n\n<p>\u968f\u7740\u7814\u7a76\u7684\u6df1\u5165\uff0c\u8d8a\u6765\u8d8a\u591a\u7684\u7814\u7a76\u8005\u610f\u8bc6\u5230\uff0c\u76f4\u63a5\u4f18\u5316\u5206\u7c7b\u95f4\u9694\u5206\u5e03\u53ef\u80fd\u662f\u63d0\u9ad8AdaBoost\u6cdb\u5316\u80fd\u529b\u7684\u6709\u6548\u9014\u5f84\u3002\u57fa\u4e8e\u8fd9\u4e00\u601d\u60f3\uff0c\u8bb8\u591aAdaBoost\u7684\u53d8\u79cd\u7b97\u6cd5\u76f8\u7ee7\u63d0\u51fa\uff0c\u8fd9\u4e9b\u7b97\u6cd5\u901a\u8fc7\u76f4\u63a5\u4f18\u5316\u5206\u7c7b\u95f4\u9694\u5206\u5e03\u6216\u5176\u4ed6\u76f8\u5173\u6307\u6807\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347\u4e86\u7b97\u6cd5\u7684\u6027\u80fd\u3002<\/p>\n\n\n<p>\u7ed3\u8bba<\/p>\n\n\n<p>AdaBoost\u6cdb\u5316\u8bef\u5dee\u7814\u7a76\u7684\u6838\u5fc3\u5728\u4e8e\u89e3\u91ca\u7b97\u6cd5\u7684\u6cdb\u5316\u80fd\u529b\u4ece\u4f55\u800c\u6765\u3002\u901a\u8fc7\u5f15\u5165\u5206\u7c7b\u95f4\u9694\u7406\u8bba\uff0c\u7814\u7a76\u8005\u4eec\u9010\u6b65\u63ed\u793a\u4e86AdaBoost\u5728\u589e\u5927\u5206\u7c7b\u95f4\u9694\u3001\u4f18\u5316\u5206\u7c7b\u95f4\u9694\u5206\u5e03\u8fc7\u7a0b\u4e2d\u5b9e\u73b0\u6cdb\u5316\u80fd\u529b\u63d0\u5347\u7684\u673a\u5236\u3002\u5c3d\u7ba1\u5728\u8fd9\u4e00\u8fc7\u7a0b\u4e2d\u7ecf\u5386\u4e86\u5404\u79cd\u6311\u6218\u548c\u8d28\u7591\uff0c\u6700\u7ec8\u7684\u7814\u7a76\u6210\u679c\u8868\u660e\uff0cAdaBoost\u7684\u6cdb\u5316\u80fd\u529b\u4e0d\u4ec5\u4f9d\u8d56\u4e8e\u6700\u5c0f\u5206\u7c7b\u95f4\u9694\uff0c\u8fd8\u4e0e\u5206\u7c7b\u95f4\u9694\u7684\u6574\u4f53\u5206\u5e03\u3001\u5b50\u5206\u7c7b\u5668\u7684\u590d\u6742\u5ea6\u7b49\u591a\u56e0\u7d20\u76f8\u5173\u3002\u8fd9\u4e00\u63a2\u7d22\u8fc7\u7a0b\u4e3a\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u7684\u7406\u8bba\u7814\u7a76\u548c\u5b9e\u9645\u5e94\u7528\u63d0\u4f9b\u4e86\u91cd\u8981\u7684\u53c2\u8003\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">AdaBoost\u7b97\u6cd5\u7684\u201c\u504f\u5dee-\u65b9\u5dee\u201d\u5206\u6790<\/h3>\n\n\n<p>\u5728\u673a\u5668\u5b66\u4e60\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff1a\u4e3a\u4ec0\u4e48\u6a21\u578b\u6709\u65f6\u5019\u5728\u8bad\u7ec3\u6570\u636e\u4e0a\u8868\u73b0\u5f88\u597d\uff0c\u4f46\u5728\u65b0\u7684\u6d4b\u8bd5\u6570\u636e\u4e0a\u8868\u73b0\u5374\u5f88\u5dee\uff1f\u8fd9\u80cc\u540e\u6d89\u53ca\u5230\u4e24\u4e2a\u91cd\u8981\u6982\u5ff5\uff1a<strong>\u504f\u5dee<\/strong>\u548c<strong>\u65b9\u5dee<\/strong>\u3002<\/p>\n\n\n<ul class=\"wp-block-list\">\n    <li><strong>\u504f\u5dee<\/strong>\u53ef\u4ee5\u7406\u89e3\u4e3a\u6a21\u578b\u5728\u9884\u6d4b\u65f6\u4e0e\u771f\u5b9e\u503c\u4e4b\u95f4\u7684\u5dee\u8ddd\u3002\u5982\u679c\u6a21\u578b\u8fc7\u4e8e\u7b80\u5355\uff0c\u6bd4\u5982\u53ea\u662f\u4e00\u6761\u76f4\u7ebf\uff0c\u90a3\u4e48\u65e0\u8bba\u7ed9\u5b83\u4ec0\u4e48\u6570\u636e\uff0c\u5b83\u90fd\u65e0\u6cd5\u5f88\u597d\u5730\u62df\u5408\uff0c\u8fd9\u65f6\u6211\u4eec\u8bf4\u6a21\u578b\u6709\u201c\u9ad8\u504f\u5dee\u201d\u3002<br><\/li>\n    <li><strong>\u65b9\u5dee<\/strong>\u5219\u662f\u6307\u6a21\u578b\u5bf9\u8bad\u7ec3\u6570\u636e\u7684\u654f\u611f\u7a0b\u5ea6\u3002\u5982\u679c\u6a21\u578b\u592a\u590d\u6742\uff0c\u6bd4\u5982\u4e00\u6761\u5f2f\u5f2f\u66f2\u66f2\u7684\u7ebf\uff0c\u90a3\u4e48\u5b83\u53ef\u80fd\u4f1a\u975e\u5e38\u51c6\u786e\u5730\u62df\u5408\u8bad\u7ec3\u6570\u636e\uff0c\u4f46\u9047\u5230\u65b0\u6570\u636e\u65f6\u5c31\u4f1a\u8868\u73b0\u4e0d\u7a33\u5b9a\uff0c\u8fd9\u65f6\u6211\u4eec\u8bf4\u6a21\u578b\u6709\u201c\u9ad8\u65b9\u5dee\u201d\u3002<br><\/li>\n<\/ul>\n\n\n<p>\u201c\u504f\u5dee-\u65b9\u5dee\u5206\u89e3\u201d\u5c31\u662f\u5206\u6790\u4e00\u4e2a\u6a21\u578b\u7684\u9884\u6d4b\u8bef\u5dee\u662f\u7531\u504f\u5dee\u8fd8\u662f\u65b9\u5dee\u5f15\u8d77\u7684\u3002\u901a\u5e38\uff0c<strong>\u7b80\u5355\u7684\u6a21\u578b<\/strong>\uff08\u6bd4\u5982\u7ebf\u6027\u6a21\u578b\uff09\u504f\u5dee\u9ad8\u4f46\u65b9\u5dee\u4f4e\uff0c\u800c<strong>\u590d\u6742\u7684\u6a21\u578b<\/strong>\uff08\u6bd4\u5982\u6df1\u5ea6\u795e\u7ecf\u7f51\u7edc\uff09\u504f\u5dee\u4f4e\u4f46\u65b9\u5dee\u9ad8\u3002<\/p>\n\n\n<p>\u5728\u8fd9\u4e00\u8282\u4e2d\uff0c\u4f5c\u8005\u8ba8\u8bba\u4e86\u4e24\u79cd\u5e38\u89c1\u7684\u96c6\u6210\u5b66\u4e60\u65b9\u6cd5\u2014\u2014<strong>Bagging<\/strong>\u548c<strong>Boosting<\/strong>\uff0c\u5b83\u4eec\u901a\u8fc7\u4e0d\u540c\u65b9\u5f0f\u6765\u51cf\u5c11\u6a21\u578b\u7684\u8bef\u5dee\u3002<\/p>\n\n\n<ol class=\"wp-block-list\">\n    <li><strong>Bagging<\/strong>\uff1a<strong>\u5b83\u7684\u4f5c\u7528\u4e3b\u8981\u662f\u51cf\u5c11\u65b9\u5dee<\/strong>\u3002Bagging\u901a\u8fc7\u591a\u6b21\u968f\u673a\u62bd\u53d6\u8bad\u7ec3\u6570\u636e\u96c6\uff0c\u7136\u540e\u8bad\u7ec3\u591a\u4e2a\u6a21\u578b\uff0c\u5e76\u5bf9\u8fd9\u4e9b\u6a21\u578b\u7684\u9884\u6d4b\u7ed3\u679c\u8fdb\u884c\u5e73\u5747\u6216\u6295\u7968\u3002\u56e0\u4e3a\u6bcf\u4e2a\u6a21\u578b\u90fd\u662f\u5728\u4e0d\u540c\u7684\u6570\u636e\u96c6\u4e0a\u8bad\u7ec3\u7684\uff0c\u6240\u4ee5\u5b83\u4eec\u5bf9\u5355\u4e2a\u6570\u636e\u70b9\u7684\u9884\u6d4b\u7ed3\u679c\u4e0d\u4f1a\u5b8c\u5168\u4e00\u6837\uff0c\u6700\u7ec8\u901a\u8fc7\u5e73\u5747\u6216\u6295\u7968\u7684\u65b9\u5f0f\u53ef\u4ee5\u51cf\u5c11\u6a21\u578b\u7684\u65b9\u5dee\uff0c\u5f97\u5230\u66f4\u7a33\u5b9a\u7684\u7ed3\u679c\u3002<br><\/li>\n    <li><strong>AdaBoost<\/strong>\uff08\u4e00\u79cdBoosting\u65b9\u6cd5\uff09\uff1a<strong>\u5b83\u53ef\u4ee5\u540c\u65f6\u51cf\u5c11\u504f\u5dee\u548c\u65b9\u5dee<\/strong>\u3002\u4e0eBagging\u4e0d\u540c\uff0cAdaBoost\u901a\u8fc7\u81ea\u9002\u5e94\u5730\u8c03\u6574\u8bad\u7ec3\u6570\u636e\u7684\u6743\u91cd\uff0c\u4f7f\u5f97\u6bcf\u4e00\u8f6e\u8bad\u7ec3\u90fd\u66f4\u52a0\u5173\u6ce8\u4e4b\u524d\u88ab\u9519\u5206\u7684\u6570\u636e\u3002\u8fd9\u6837\uff0c\u6bcf\u4e2a\u65b0\u8bad\u7ec3\u7684\u6a21\u578b\u4f1a\u7279\u522b\u5173\u6ce8\u90a3\u4e9b\u96be\u4ee5\u6b63\u786e\u5206\u7c7b\u7684\u6570\u636e\u70b9\uff0c\u4ece\u800c\u9010\u6b65\u51cf\u5c11\u6574\u4e2a\u6a21\u578b\u7684\u504f\u5dee\u548c\u65b9\u5dee\uff0c\u5f97\u5230\u4e00\u4e2a\u66f4\u5f3a\u5927\u7684\u6700\u7ec8\u6a21\u578b\u3002<br><\/li>\n<\/ol>\n\n\n<p>\u7136\u800c\uff0c\u201c\u504f\u5dee-\u65b9\u5dee\u5206\u89e3\u201d\u867d\u7136\u53ef\u4ee5\u5e2e\u52a9\u7406\u89e3Bagging\u548cBoosting\u7684\u539f\u7406\uff0c\u4f46\u5b83\u5e76\u4e0d\u80fd\u5b8c\u5168\u89e3\u91ca\u8fd9\u4e9b\u7b97\u6cd5\u7684\u6548\u679c\u3002\u4e8b\u5b9e\u4e0a\uff0c\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e9b\u7b97\u6cd5\u5e76\u6ca1\u6709\u663e\u8457\u51cf\u5c11\u65b9\u5dee\uff0c\u4f46\u4ecd\u7136\u80fd\u591f\u63d0\u9ad8\u6a21\u578b\u7684\u9884\u6d4b\u51c6\u786e\u6027\u3002\u7531\u6b64\u53ef\u4ee5\u770b\u51fa\uff0c\u5f71\u54cd\u6a21\u578b\u8868\u73b0\u7684\u56e0\u7d20\u4e0d\u4ec5\u4ec5\u662f\u504f\u5dee\u548c\u65b9\u5dee\uff0c\u8fd8\u6709\u5176\u4ed6\u590d\u6742\u7684\u56e0\u7d20\u5728\u8d77\u4f5c\u7528\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">\u201c\u51fd\u6570\u7a7a\u95f4\u68af\u5ea6\u4e0b\u964d\u6a21\u578b\u201d\u89d2\u5ea6\u7684\u5206\u6790<\/h3>\n\n\n<p>\u5728\u673a\u5668\u5b66\u4e60\u4e2d\uff0c\u6211\u4eec\u5e38\u5e38\u9700\u8981\u627e\u5230\u4e00\u4e2a\u51fd\u6570\uff0c\u8fd9\u4e2a\u51fd\u6570\u80fd\u591f\u5f88\u597d\u5730\u9884\u6d4b\u7ed3\u679c\uff0c\u6bd4\u5982\u5224\u65ad\u4e00\u5c01\u90ae\u4ef6\u662f\u5426\u662f\u5783\u573e\u90ae\u4ef6\u3002\u95ee\u9898\u5728\u4e8e\uff0c\u5982\u4f55\u627e\u5230\u8fd9\u4e2a\u5408\u9002\u7684\u51fd\u6570\u5462\uff1f\u8fd9\u5c31\u662f\u201c\u51fd\u6570\u7a7a\u95f4\u68af\u5ea6\u4e0b\u964d\u6a21\u578b\u201d\u6240\u8981\u89e3\u51b3\u7684\u95ee\u9898\u3002<\/p>\n\n\n<p>\u4ec0\u4e48\u662f\u51fd\u6570\u7a7a\u95f4\uff1f<\/p>\n\n\n<p>\u53ef\u4ee5\u628a\u51fd\u6570\u7a7a\u95f4\u60f3\u8c61\u6210\u4e00\u4e2a\u5de8\u5927\u7684\u96c6\u5408\uff0c\u91cc\u9762\u5305\u542b\u4e86\u6240\u6709\u53ef\u80fd\u7684\u51fd\u6570\u3002\u6211\u4eec\u60f3\u8981\u505a\u7684\uff0c\u5c31\u662f\u5728\u8fd9\u4e2a\u96c6\u5408\u4e2d\u627e\u5230\u4e00\u4e2a\u201c\u6700\u4f18\u201d\u7684\u51fd\u6570\uff0c\u5b83\u80fd\u5728\u6211\u4eec\u7ed9\u5b9a\u7684\u6570\u636e\u4e0a\u8868\u73b0\u5f97\u6700\u597d\uff0c\u4e5f\u5c31\u662f\u9884\u6d4b\u5f97\u6700\u51c6\u786e\u3002<\/p>\n\n\n<p>\u4ec0\u4e48\u662f\u68af\u5ea6\u4e0b\u964d\uff1f<\/p>\n\n\n<p>\u68af\u5ea6\u4e0b\u964d\u662f\u4e00\u79cd\u7528\u6765\u4f18\u5316\u7684\u7b56\u7565\u3002\u4f60\u53ef\u4ee5\u60f3\u8c61\u5b83\u662f\u5728\u4e00\u5ea7\u5c71\u4e0a\u627e\u6700\u4f4e\u70b9\u7684\u8fc7\u7a0b\uff1a\u4f60\u4ece\u5c71\u4e0a\u7684\u67d0\u4e2a\u4f4d\u7f6e\u5f00\u59cb\uff0c\u7136\u540e\u4e00\u6b65\u6b65\u5411\u4f4e\u5904\u8d70\uff0c\u76f4\u5230\u627e\u5230\u5c71\u8c37\u7684\u6700\u4f4e\u70b9\u3002\u5728\u673a\u5668\u5b66\u4e60\u4e2d\uff0c\u8fd9\u4e2a\u201c\u6700\u4f4e\u70b9\u201d\u5c31\u662f\u6211\u4eec\u60f3\u8981\u627e\u5230\u7684\u90a3\u4e2a\u8ba9\u9884\u6d4b\u8bef\u5dee\u6700\u5c0f\u7684\u51fd\u6570\u3002<\/p>\n\n\n<p>\u51fd\u6570\u7a7a\u95f4\u4e2d\u7684\u68af\u5ea6\u4e0b\u964d<\/p>\n\n\n<p>\u5728\u201c\u51fd\u6570\u7a7a\u95f4\u68af\u5ea6\u4e0b\u964d\u6a21\u578b\u201d\u4e2d\uff0c\u4f5c\u8005\u8ba8\u8bba\u4e86\u5982\u4f55\u5728\u51fd\u6570\u7a7a\u95f4\u91cc\u5e94\u7528\u68af\u5ea6\u4e0b\u964d\u7684\u65b9\u6cd5\u6765\u627e\u5230\u6700\u4f18\u51fd\u6570\u3002\u6bcf\u6b21\u8fed\u4ee3\u65f6\uff0c\u7b97\u6cd5\u90fd\u4f1a\u9009\u62e9\u4e00\u4e2a\u65b0\u7684\u5c0f\u6b65\u9aa4\uff0c\u4f7f\u5f97\u9884\u6d4b\u8bef\u5dee\u53d8\u5c0f\u3002\u901a\u8fc7\u4e0d\u65ad\u91cd\u590d\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u53ef\u4ee5\u627e\u5230\u4e00\u4e2a\u4f7f\u5f97\u6574\u4f53\u8bef\u5dee\u6700\u5c0f\u7684\u51fd\u6570\u3002<\/p>\n\n\n<p>\u4e0eAdaBoost\u7684\u5173\u7cfb<\/p>\n\n\n<p>AdaBoost\u7b97\u6cd5\u5b9e\u9645\u4e0a\u53ef\u4ee5\u770b\u4f5c\u662f\u5728\u51fd\u6570\u7a7a\u95f4\u4e2d\u8fdb\u884c\u68af\u5ea6\u4e0b\u964d\u7684\u4e00\u4e2a\u5177\u4f53\u4f8b\u5b50\u3002AdaBoost\u7684\u76ee\u6807\u662f\u627e\u5230\u4e00\u7cfb\u5217\u5f31\u5206\u7c7b\u5668\uff08\u6bcf\u4e2a\u5206\u7c7b\u5668\u672c\u8eab\u7684\u51c6\u786e\u7387\u53ef\u80fd\u4e0d\u9ad8\uff09\uff0c\u5e76\u5c06\u5b83\u4eec\u7ec4\u5408\u8d77\u6765\uff0c\u5f62\u6210\u4e00\u4e2a\u5f3a\u5927\u7684\u5206\u7c7b\u5668\u3002<\/p>\n\n\n<p>\u5728\u6bcf\u4e00\u8f6e\u8fed\u4ee3\u4e2d\uff0cAdaBoost\u4f1a\u6839\u636e\u524d\u4e00\u8f6e\u7684\u9519\u8bef\u60c5\u51b5\u8c03\u6574\u8bad\u7ec3\u6837\u672c\u7684\u6743\u91cd\uff0c\u7279\u522b\u5173\u6ce8\u90a3\u4e9b\u4e4b\u524d\u88ab\u9519\u5206\u7684\u6837\u672c\u3002\u7136\u540e\uff0c\u5b83\u901a\u8fc7\u7c7b\u4f3c\u68af\u5ea6\u4e0b\u964d\u7684\u65b9\u6cd5\u9009\u62e9\u4e00\u4e2a\u65b0\u7684\u5f31\u5206\u7c7b\u5668\uff0c\u8fd9\u4e2a\u5206\u7c7b\u5668\u4e13\u95e8\u7528\u6765\u4fee\u6b63\u524d\u9762\u7684\u9519\u8bef\u3002\u6700\u7ec8\uff0c\u6240\u6709\u8fd9\u4e9b\u5f31\u5206\u7c7b\u5668\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u5f62\u6210\u4e00\u4e2a\u66f4\u5f3a\u5927\u7684\u6a21\u578b\u3002<\/p>\n\n\n<p>\u603b\u7ed3<\/p>\n\n\n<p>\u201c\u51fd\u6570\u7a7a\u95f4\u68af\u5ea6\u4e0b\u964d\u6a21\u578b\u201d\u63cf\u8ff0\u4e86\u5982\u4f55\u901a\u8fc7\u4e00\u6b65\u6b65\u4f18\u5316\uff08\u5c31\u50cf\u5728\u51fd\u6570\u7a7a\u95f4\u91cc\u627e\u6700\u4f4e\u70b9\u4e00\u6837\uff09\u6765\u627e\u5230\u4e00\u4e2a\u6700\u4f18\u7684\u9884\u6d4b\u51fd\u6570\u3002AdaBoost\u5c31\u662f\u5229\u7528\u4e86\u8fd9\u4e2a\u601d\u60f3\uff0c\u901a\u8fc7\u4e0d\u65ad\u7ec4\u5408\u591a\u4e2a\u5f31\u5206\u7c7b\u5668\uff0c\u6700\u7ec8\u5f62\u6210\u4e00\u4e2a\u5f3a\u5927\u7684\u5206\u7c7b\u5668\uff0c\u8fd9\u6837\u53ef\u4ee5\u66f4\u51c6\u786e\u5730\u8fdb\u884c\u9884\u6d4b\u6216\u5206\u7c7b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bba\u6587\u7b80\u4ecb \u82f1\u6587\u9898\u76ee\uff1aAdvance and 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