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\u4f60\u53ef\u4ee5\u770b\u5230\u4e09\u5c42\u795e\u7ecf\u5143\uff0c\u6bcf\u4e00\u5c42\u6709\u4e09\u4e2a\u4eba\u5de5\u795e\u7ecf\u5143\u6216\u8282\u70b9\u3002\u4f60\u8fd8\u53ef\u4ee5\u770b\u5230\u6bcf\u4e2a\u8282\u70b9\u90fd\u4e0e\u524d\u4e00\u5c42\u6216\u540e\u7eed\u5c42\u7684\u5176\u4ed6\u6bcf\u4e00\u4e2a\u8282\u70b9\u4e92\u76f8\u8fde\u63a5\u3002<\/p>\n \u4f46\u662f\uff0c\u8fd9\u770b\u8d77\u6765\u5f88\u9177\u7684\u4f53\u7cfb\u67b6\u6784\uff0c\u54ea\u4e00\u90e8\u5206\u80fd\u591f\u6267\u884c\u5b66\u4e60\u529f\u80fd\u5462\uff1f\u9488\u5bf9\u8bad\u7ec3\u6837\u672c\uff0c\u6211\u4eec\u5e94\u8be5\u5982\u4f55\u8c03\u6574\u505a\u51fa\u53cd\u5e94\u5462\uff1f\u6709\u6ca1\u6709\u548c\u5148\u524d\u7ebf\u6027\u5206\u7c7b\u5668\u4e2d\u7684\u659c\u7387\u7c7b\u4f3c\u7684\u53c2\u6570\u4f9b\u6211\u4eec\u8c03\u6574\u5462\uff1f\u6700\u660e\u663e\u7684\u4e00\u70b9\u5c31\u662f\u8c03\u6574\u8282\u70b9\u4e4b\u95f4\u7684\u8fde\u63a5\u5f3a\u5ea6\uff0c\u5373 \u6743\u91cd<\/strong><\/p>\n \u968f\u7740\u795e\u7ecf\u7f51\u7edc\u5b66\u4e60\u8fc7\u7a0b\u7684\u8fdb\u884c\uff0c\u795e\u7ecf\u7f51\u7edc\u901a\u8fc7\u8c03\u6574\u4f18\u5316\u7f51\u7edc\u5185\u90e8\u7684\u94fe\u63a5\u6743\u91cd<\/strong>\u6539\u8fdb\u8f93\u51fa\uff0c\u4e00\u4e9b\u6743\u91cd\u53ef\u80fd\u4f1a\u53d8\u4e3a\u96f6\u6216\u63a5\u8fd1\u4e8e\u96f6\u3002\u96f6\u6216\u51e0\u4e4e\u4e3a\u96f6\u7684\u6743\u91cd\u610f\u5473\u7740\u8fd9\u4e9b\u94fe\u63a5\u5bf9\u7f51\u7edc\u7684\u8d21\u732e\u4e3a\u96f6\uff0c\u56e0\u4e3a\u6ca1\u6709\u4f20\u9012\u4fe1\u53f7\u3002\u96f6\u6743\u91cd\u610f\u5473\u7740\u4fe1\u53f7\u4e58\u4ee5\u96f6\uff0c\u7ed3\u679c\u5f97\u5230\u96f6\uff0c\u56e0\u6b64\u8fd9\u4e2a\u94fe\u63a5\u5b9e\u9645\u4e0a\u662f\u88ab\u65ad\u5f00\u4e86<\/p>\n \u4f46\u662f\uff0c\u8ba1\u7b97\u4fe1\u53f7\u5982\u4f55\u7ecf\u8fc7\u4e00\u5c42\u4e00\u5c42\u7684\u795e\u7ecf\u5143\uff0c\u4ece\u8f93\u5165\u53d8\u6210\u8f93\u51fa\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4f3c\u4e4e\u6709\u70b9\u4ee4\u4eba\u751f\u754f\uff0c\u8fd9\u597d\u50cf\u662f\u4e00\u79cd\u975e\u5e38\u8270\u82e6\u7684\u5de5\u4f5c\u3002<\/p>\n \u56e0\u6b64\uff0c\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528\u53ea\u6709\u4e24\u5c42\u3001\u6bcf\u5c42\u4e24\u4e2a\u795e\u7ecf\u5143\u7684\u8f83\u5c0f\u7684\u795e\u7ecf\u7f51\u7edc\uff0c\u6765\u6f14\u793a\u795e\u7ecf\u7f51\u7edc\u5982\u4f55\u5de5\u4f5c\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n <\/p>\n \u8ba9\u6211\u4eec\u60f3\u8c61\u4e00\u4e0b\uff0c\u4e24\u4e2a\u8f93\u5165\u503c\u5206\u522b\u4e3a1.0\u548c0.5\u3002\u8fd9\u4e9b\u503c\u8f93\u5165\u5230\u8fd9\u4e2a\u8f83\u5c0f\u7684\u795e\u7ecf\u7f51\u7edc\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002\u6bcf\u4e2a\u8282\u70b9\u4f7f\u7528\u6fc0\u6d3b\u51fd\u6570\uff0c\u5c06\u8f93\u5165\u8f6c\u53d8\u6210\u8f93\u51fa\u3002<\/p>\n \u6211\u4eec\u8fd8\u5c06\u4f7f\u7528\u5148\u524d\u770b\u5230\u7684S\u51fd\u6570y=1\/(1+e -x)\uff0c\u5176\u4e2d\u795e\u7ecf\u5143\u8f93\u5165\u4fe1\u53f7\u7684\u603b\u548c\u4e3ax\uff0c\u795e\u7ecf\u5143\u8f93\u51fa\u4e3ay\u3002\u6743\u91cd\u662f\u4ec0\u4e48\uff1f\u6743\u91cd\u7684\u521d\u59cb\u503c\u5e94\u8be5\u4e3a\u591a\u5c11\uff1f\u8fd9\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u95ee\u9898\u3002<\/p>\n \u8ba9\u6211\u4eec\u4f7f\u7528\u4e00\u4e9b\u968f\u673a\u6743\u91cd\uff1a<\/p>\n \u00b7 w1,1=0.9<\/p>\n \u00b7 w1,2=0.2<\/p>\n \u00b7 w2,1=0.3<\/p>\n \u00b7 w2,2=0.8<\/p>\n <\/p>\n \u8ba9\u6211\u4eec\u5f00\u59cb\u8ba1\u7b97\u5427\uff01<\/p>\n \u7b2c\u4e00\u5c42\u8282\u70b9\u662f\u8f93\u5165\u5c42\uff0c\u8fd9\u4e00\u5c42\u4e0d\u505a\u5176\u4ed6\u4e8b\u60c5\uff0c\u4ec5\u8868\u793a\u8f93\u5165\u4fe1\u53f7\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8f93\u5165\u8282\u70b9\u4e0d\u5bf9\u8f93\u5165\u503c\u5e94\u7528\u6fc0\u6d3b\u51fd\u6570\u3002\u8fd9\u6ca1\u6709\u4ec0\u4e48\u5176\u4ed6\u5947\u5999\u7684\u539f\u56e0\uff0c\u81ea\u7136\u800c\u7136\u5730\uff0c\u5386\u53f2\u5c31\u662f\u8fd9\u6837\u89c4\u5b9a\u7684\u3002<\/p>\n \u795e\u7ecf\u7f51\u7edc\u7684\u7b2c\u4e00\u5c42\u662f\u8f93\u5165\u5c42\uff0c\u8fd9\u5c42\u6240\u505a\u7684\u6240\u6709\u4e8b\u60c5\u5c31\u662f\u8868\u793a\u8f93\u5165\uff0c\u4ec5\u6b64\u800c\u5df2\u3002\u7b2c\u4e00\u5c42\u8f93\u5165\u5c42\u5f88\u5bb9\u6613\uff0c\u6b64\u5904\uff0c\u65e0\u9700\u8fdb\u884c\u8ba1\u7b97\u3002\u63a5\u4e0b\u6765\u7684\u7b2c\u4e8c\u5c42\uff0c\u6211\u4eec\u9700\u8981\u505a\u4e00\u4e9b\u8ba1\u7b97\u3002\u5bf9\u4e8e\u8fd9\u4e00\u5c42\u7684\u6bcf\u4e2a\u8282\u70b9\uff0c\u6211\u4eec\u9700\u8981\u7b97\u51fa\u7ec4\u5408\u8f93\u5165\u3002<\/p>\n \u8fd8\u8bb0\u5f97S\u51fd\u6570y=1 \/\uff081+e-x\uff09\u5417\uff1f\u8fd9\u4e2a\u51fd\u6570\u4e2d\u7684x\u8868\u793a\u4e00\u4e2a\u8282\u70b9\u7684\u7ec4\u5408\u8f93\u5165\u3002\u6b64\u5904\u7ec4\u5408\u7684\u662f\u6240\u8fde\u63a5\u7684\u524d\u4e00\u5c42\u4e2d\u7684\u539f\u59cb\u8f93\u51fa\uff0c\u4f46\u662f\u8fd9\u4e9b\u8f93\u51fa\u5f97\u5230\u4e86\u94fe\u63a5\u6743\u91cd\u7684\u8c03\u8282\u3002\u4e0b\u56fe\u5c31\u662f\u6211\u4eec\u5148\u524d\u6240\u770b\u5230\u7684\u4e00\u5e45\u56fe\uff0c\u4f46\u662f\u73b0\u5728\uff0c\u8fd9\u5e45\u56fe\u5305\u62ec\u4f7f\u7528\u94fe\u63a5\u6743\u91cd\u8c03\u8282\u8f93\u5165\u4fe1\u53f7\u7684\u8fc7\u7a0b\u3002<\/p>\n <\/p>\n \u56e0\u6b64\uff0c\u9996\u5148\u8ba9\u6211\u4eec\u5173\u6ce8\u7b2c\u4e8c\u5c42\u7684\u8282\u70b91\u3002\u7b2c\u4e00\u5c42\u8f93\u5165\u5c42\u4e2d\u7684\u4e24\u4e2a\u8282\u70b9\u8fde\u63a5\u5230\u4e86\u8fd9\u4e2a\u8282\u70b9\u3002\u8fd9\u4e9b\u8f93\u5165\u8282\u70b9\u5177\u67091.0\u548c0.5\u7684\u539f\u59cb\u503c\u3002\u6765\u81ea\u7b2c\u4e00\u4e2a\u8282\u70b9\u7684\u94fe\u63a5\u5177\u67090.9\u7684\u76f8\u5173\u6743\u91cd\uff0c\u6765\u81ea\u7b2c\u4e8c\u4e2a\u8282\u70b9\u7684\u94fe\u63a5\u5177\u67090.3\u7684\u6743\u91cd\u3002<\/p>\n <\/p>\n \u56e0\u6b64\uff0c\u73b0\u5728\uff0c\u6211\u4eec\u5df2\u7ecf\u5f97\u5230\u4e86x=1.05\uff0c\u8fd9\u662f\u7b2c\u4e8c\u5c42\u7b2c\u4e00\u4e2a\u8282\u70b9\u7684\u7ec4\u5408\u8c03\u8282\u8f93\u5165\u3002\u6700\u7ec8\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6fc0\u6d3b\u51fd\u6570y=1 \/\uff081+e -x\uff09\u8ba1\u7b97\u8be5\u8282\u70b9\u7684\u8f93\u51fa\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u8ba1\u7b97\u5668\u6765\u8fdb\u884c\u8fd9\u4e2a\u8ba1\u7b97\u3002\u7b54\u6848\u4e3ay=1 \/\uff081+0.3499\uff09=1 \/ 1.3499\u3002y=0.7408<\/p>\n <\/p>\n<\/p>\n \u56e0\u6b64\uff0c\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528S\u6fc0\u6d3b\u51fd\u6570y=1\/(1+0.5488)=1\/1.5488\u8ba1\u7b97\u8282\u70b9\u8f93\u51fa\uff0c\u5f97\u5230y=0.6457\u3002<\/p>\n \u4e0b\u56fe\u5c55\u793a\u4e86\u6211\u4eec\u7684\u8ba1\u7b97\u7ed3\u679c<\/p>\n <\/p>\n \u4ece\u4e00\u4e2a\u975e\u5e38\u7b80\u5316\u7684\u7f51\u7edc\u5f97\u5230\u4e24\u4e2a\u8f93\u51fa\u503c\uff0c\u8fd9\u4e2a\u5de5\u4f5c\u91cf\u76f8\u5bf9\u8f83\u5c0f\u3002\u5bf9\u4e8e\u4e00\u4e2a\u76f8\u5bf9\u8f83\u5927\u7684\u7f51\u7edc\uff0c\u6211\u4e0d\u5e0c\u671b\u4f7f\u7528\u624b\u5de5\u8fdb\u884c\u8ba1\u7b97\uff01\u597d\u5728\u8ba1\u7b97\u673a\u5728\u8fdb\u884c\u5927\u91cf\u8ba1\u7b97\u65b9\u9762\u8868\u73b0\u975e\u5e38\u51fa\u8272\uff0c\u5e76\u4e14\u4e0d\u77e5\u75b2\u5026\u548c\u538c\u70e6\u3002<\/p>\n \u5373\u4fbf\u5982\u6b64\uff0c\u5bf9\u4e8e\u5177\u6709\u591a\u4e8e\u4e24\u5c42\uff0c\u6bcf\u4e00\u5c42\u67094\u30018\u751a\u81f3100\u4e2a\u8282\u70b9\u7684\u7f51\u7edc\uff0c\u6211\u4e5f\u4e0d\u5e0c\u671b\u7f16\u5199\u8ba1\u7b97\u673a\u6307\u4ee4\u6765\u5bf9\u8fd9\u6837\u7684\u7f51\u7edc\u8fdb\u884c\u8ba1\u7b97\u3002\u5373\u4f7f\u53ea\u662f\u5199\u51fa\u6240\u6709\u5c42\u6b21\u548c\u8282\u70b9\u7684\u8ba1\u7b97\u6307\u4ee4\uff0c\u4e5f\u4f1a\u8ba9\u6211\u611f\u5230\u67af\u71e5\uff0c\u8ba9\u6211\u72af\u9519\uff0c\u66f4\u4e0d\u7528\u8bf4\u624b\u5de5\u8fdb\u884c\u8fd9\u4e9b\u8ba1\u7b97\u4e86\u3002<\/p>\n \u597d\u5728\uff0c\u5373\u4f7f\u662f\u9762\u5bf9\u4e00\u4e2a\u5177\u6709\u5f88\u591a\u5c42\u3001\u4f17\u591a\u8282\u70b9\u7684\u795e\u7ecf\u7f51\u7edc\uff0c\u6570\u5b66\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u4ee5\u975e\u5e38\u7b80\u6d01\u7684\u65b9\u5f0f\u5199\u4e0b\u8ba1\u7b97\u51fa\u6240\u6709\u8f93\u51fa\u503c\u7684\u6307\u4ee4\u3002\u7531\u4e8e\u8fd9\u79cd\u7b80\u6d01\u6027\uff0c\u6307\u4ee4\u53d8\u5f97\u975e\u5e38\u77ed\uff0c\u6267\u884c\u8d77\u6765\u4e5f\u66f4\u6709\u6548\u7387\uff0c\u56e0\u6b64\u8fd9\u79cd\u7b80\u6d01\u6027\u4e0d\u4ec5\u4ec5\u5bf9\u4eba\u7c7b\u8bfb\u8005\u6709\u76ca\u5904\uff0c\u5bf9\u8ba1\u7b97\u673a\u800c\u8a00\uff0c\u4e5f\u4e00\u6837\u5927\u6709\u88e8\u76ca\u3002<\/p>\n \u8fd9\u4e00\u7b80\u6d01\u65b9\u6cd5\u5c31\u662f\u4f7f\u7528\u77e9\u9635<\/strong>\uff0c\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c31\u6765\u770b\u770b\u77e9\u9635\u5982\u4f55\u8868\u8fbe\u795e\u7ecf\u5143<\/p>\n \u4e0b\u56fe\u663e\u793a\u4e86\u5177\u67093\u5c42\u3001\u6bcf\u5c42\u5177\u67093\u4e2a\u8282\u70b9\u7684\u795e\u7ecf\u7f51\u7edc\u793a\u4f8b\u3002\u4e3a\u4e86\u4fdd\u8bc1\u56fe\u7684\u6e05\u6670\uff0c\u6211\u4eec\u5e76\u6ca1\u6709\u6807\u4e0a\u6240\u6709\u7684\u6743\u91cd<\/p>\n <\/p>\n 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\u4f46\u662f\u7b49\u7b49\uff0c\u4e3a\u4ec0\u4e48\u8fd9\u4e2aW\u7684\u4e0b\u6807\u6211\u4eec\u5199\u7684\u662f\u201cinput_hidden\u201d\u5462\uff1f\u8fd9\u662f\u56e0\u4e3aWinput_hidden\u662f\u8f93\u5165\u5c42\u548c\u9690\u85cf\u5c42\u4e4b\u95f4\u7684\u6743\u91cd\u3002\u6211\u4eec\u9700\u8981\u53e6\u4e00\u4e2a\u6743\u91cd\u77e9\u9635\u6765\u8868\u793a\u9690\u85cf\u5c42\u548c\u8f93\u51fa\u5c42\u4e4b\u95f4\u7684\u94fe\u63a5\uff0c\u8fd9\u4e2a\u77e9\u9635\u6211\u4eec\u79f0\u4e4b\u4e3aWhidden_output\u3002<\/p>\n \u4e0b\u56fe\u663e\u793a\u7684\u662f\u7b2c\u4e8c\u4e2a\u77e9\u9635Whidden_output\uff0c\u5982\u5148\u524d\u4e00\u6837\uff0c\u77e9\u9635\u4e2d\u586b\u5199\u4e86\u6743\u91cd\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u540c\u6837\u4f60\u53ef\u4ee5\u770b\u5230\uff0c\u9690\u85cf\u5c42\u7b2c\u4e09\u4e2a\u8282\u70b9\u548c\u8f93\u51fa\u5c42\u7b2c\u4e09\u4e2a\u8282\u70b9\u4e4b\u95f4\u94fe\u63a5\u7684\u6743\u91cd\u4e3aw3,3=0.9\u3002<\/p>\n <\/p>\n 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