

{"id":38730,"date":"2019-06-26T00:00:05","date_gmt":"2019-06-25T16:00:05","guid":{"rendered":"https:\/\/case.ntu.edu.tw\/blog\/?p=38730"},"modified":"2022-01-04T02:07:04","modified_gmt":"2022-01-03T18:07:04","slug":"%e6%a9%9f%e5%99%a8%e5%a6%82%e4%bd%95%e6%b7%b1%e5%ba%a6%e5%ad%b8%e7%bf%922-2","status":"publish","type":"post","link":"https:\/\/case.ntu.edu.tw\/blog\/?p=38730","title":{"rendered":"\u6a5f\u5668\u5982\u4f55\u6df1\u5ea6\u5b78\u7fd2(2\/2)"},"content":{"rendered":"<div class=\"single-post-media clr\">\n<div class=\"post-thumbnail\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2019\/06\/sa0616INTRO01.png\" alt=\"\u6a5f\u5668\u5982\u4f55\u6df1\u5ea6\u5b78\u7fd2(2\/2)\" width=\"475\" height=\"335\" \/><\/div>\n<\/div>\n<div class=\"entry clr\">\n<div class=\"pf-content\">\n<p><strong>\u64b0\u6587\uff0fYoshua Bengio\uff5c\u8b6f\u8005\uff0f\u937e\u6a39\u4eba<\/strong><br 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neural network\uff09\uff0c\u5df2\u7d93\u6210\u70baAI\u5fa9\u8208\u7684\u95dc\u9375\u6280\u8853\u3002\u6df1\u5ea6\u5b78\u7fd2\u7684\u5377\u7a4d\u795e\u7d93\u7db2\u8def\u7531\u5f88\u591a\u5c64\u4eba\u5de5\u795e\u7d93\u5143\u69cb\u6210\uff0c\u914d\u7f6e\u7684\u65b9\u5f0f\u53ef\u4f7f\u8f38\u51fa\u7d50\u679c\u4e0d\u6703\u5c0d\u5f71\u50cf\u4e2d\u4e3b\u8981\u7269\u9ad4\u7684\u8b8a\u52d5\u592a\u654f\u611f\uff0c\u4f8b\u5982\uff0c\u4e3b\u8981\u7269\u9ad4\u7a0d\u5fae\u79fb\u52d5\u4f4d\u7f6e\uff0c\u4ecd\u7136\u53ef\u4ee5\u6210\u529f\u8fa8\u8b58\uff1b\u8a13\u7df4\u826f\u597d\u7684\u5377\u7a4d\u795e\u7d93\u7db2\u8def\u5c31\u80fd\u8fa8\u8b58\u51fa\u4e0d\u540c\u7167\u7247\u4e2d\u4e0d\u540c\u89d2\u5ea6\u7684\u540c\u4e00\u5f35\u81c9\u5b54\u3002\u5377\u7a4d\u795e\u7d93\u7db2\u8def\u7684\u8a2d\u8a08\u9748\u611f\u4f86\u81ea\u8996\u89ba\u76ae\u8cea\uff08visual cortex\uff09\u7684\u591a\u5c64\u7d50\u69cb\uff0c\u8996\u89ba\u76ae\u8cea\u662f\u4eba\u985e\u5927\u8166\u4e2d\u8ca0\u8cac\u63a5\u6536\u8996\u89ba\u8a0a\u865f\u7684\u90e8\u4f4d\u3002\u5377\u7a4d\u795e\u7d93\u7db2\u8def\u7684\u591a\u5c64\u4eba\u5de5\u795e\u7d93\u5143\uff0c\u4f7f\u5377\u7a4d\u795e\u7d93\u7db2\u8def\u8b8a\u5f97\u300c\u6709\u6df1\u5ea6\u300d\uff0c\u66f4\u80fd\u5b78\u7fd2\u771f\u5be6\u4e16\u754c\u7684\u6797\u6797\u7e3d\u7e3d\u3002<\/p>\n<p><strong>\u4eba\u5de5\u667a\u6167\uff0c\u7a81\u7834\u56f0\u5883<\/strong><\/p>\n<p>\u5be6\u969b\u4e0a\uff0c\u63a8\u52d5\u6df1\u5ea6\u5b78\u7fd2\u7684\u529f\u81e3\u662f10\u5e74\u524d\u7684\u67d0\u4e9b\u5275\u65b0\u7814\u7a76\uff0c\u7576\u6642\u4eba\u5011\u5c0dAI\u548c\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u71b1\u60c5\u964d\u5230\u5e7e\u5341\u5e74\u4f86\u7684\u6700\u4f4e\u9ede\u3002\u7531\u653f\u5e9c\u548c\u79c1\u4eba\u8cc7\u52a9\u7684\u52a0\u62ff\u5927\u9ad8\u7b49\u7814\u7a76\u6240\uff08CIFAR\uff09\uff0c\u56e0\u70ba\u6279\u51c6\u591a\u502b\u591a\u5927\u5b78\u7684\u8f9b\u9813\uff08Geoffrey Hinton\uff09\u4e3b\u6301\u7684\u8a08\u756b\u7d93\u8cbb\uff0c\u91cd\u65b0\u9ede\u71c3\u4e86AI\u7684\u5e0c\u671b\u4e4b\u706b\uff0c\u9019\u9805\u8a08\u756b\u9084\u6709\u6211\u548c\u7f8e\u570b\u7d10\u7d04\u5927\u5b78\u7684\u62c9\u6606\uff08Yann LeCun\uff09\u3001\u53f2\u4e39\u4f5b\u5927\u5b78\u7684\u5433\u6069\u9054\uff08Andrew Ng\uff09\u4ee5\u53ca\u52a0\u5dde\u5927\u5b78\u67cf\u514b\u840a\u5206\u6821\u7684\u5967\u65af\u8c6a\u68ee\uff08Bruno Olshausen\uff09\u7b49\u4eba\u53c3\u8207\u3002\u79d1\u5b78\u793e\u7fa4\u5728\u90a3\u6bb5\u6642\u9593\u88e1\u5c0d\u65bc\u9019\u500b\u9818\u57df\u62b1\u6301\u6d88\u6975\u614b\u5ea6\uff0c\u5c0e\u81f4\u6211\u5011\u5f88\u96e3\u767c\u8868\u8ad6\u6587\uff0c\u66f4\u752d\u63d0\u8aaa\u670d\u7814\u7a76\u751f\u5f9e\u4e8b\u9019\u65b9\u9762\u7684\u7814\u7a76\uff0c\u4f46\u6211\u5011\u5f37\u70c8\u611f\u53d7\u5230\uff0c\u63a8\u52d5\u9019\u4e9b\u7814\u7a76\u662f\u5f88\u91cd\u8981\u7684\u3002<\/p>\n<p>\u61f7\u7591\u4eba\u58eb\u8a8d\u70ba\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u4e0d\u80fd\u514b\u670d\u8af8\u591a\u6311\u6230\uff0c\u539f\u56e0\u4e4b\u4e00\u662f\u8a13\u7df4\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u7814\u7a76\u6beb\u7121\u9032\u5c55\uff0c\u9019\u4e9b\u7814\u7a76\u6d89\u53ca\u5982\u4f55\u8b93\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u8868\u73fe\u6700\u4f73\u5316\uff08optimzation\uff09\u3002\u6700\u4f73\u5316\u5c6c\u65bc\u6578\u5b78\u7684\u4e00\u9580\u5206\u652f\uff0c\u8a66\u5716\u627e\u5230\u4e00\u7d44\u53c3\u6578\u7684\u7d44\u614b\u4ee5\u9054\u6210\u76ee\u6a19\u3002\u5728\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u4e2d\uff0c\u9019\u4e9b\u53c3\u6578\u7a31\u70ba\u7a81\u89f8\u6b0a\u91cd\uff08synaptic weight\uff09\uff0c\u4ee3\u8868\u8a0a\u865f\u5f9e\u4e00\u500b\u4eba\u5de5\u795e\u7d93\u5143\u50b3\u905e\u5230\u53e6\u4e00\u500b\u4eba\u5de5\u795e\u7d93\u5143\u7684\u5f37\u5ea6\u3002<\/p>\n<p>\u9019\u500b\u76ee\u6a19\u5c31\u662f\u505a\u51fa\u6700\u7cbe\u78ba\u7684\u9810\u6e2c\u3002\u7576\u53c3\u6578\u548c\u76ee\u6a19\u7684\u95dc\u4fc2\u975e\u5e38\u7c21\u55ae\u6642\uff08\u7cbe\u78ba\u4f86\u8aaa\uff0c\u9019\u500b\u76ee\u6a19\u662f\u9019\u4e9b\u53c3\u6578\u7684\u51f8\u51fd\u6578\uff09\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u9010\u6b65\u8abf\u6574\u9019\u4e9b\u53c3\u6578\uff0c\u76f4\u5230\u903c\u8fd1\u53ef\u80fd\u7522\u751f\u6700\u4f73\u6c7a\u5b9a\u7684\u6578\u503c\uff0c\u4e5f\u5c31\u662f\u6240\u8b02\u7684\u5168\u5c40\u6975\u5c0f\u503c\uff08global minimum\uff09\uff0c\u76f8\u7576\u65bc\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u53ef\u80fd\u767c\u751f\u9810\u6e2c\u932f\u8aa4\u7684\u6700\u4f4e\u5e73\u5747\u503c\u3002<\/p>\n<p>\u4e00\u822c\u4f86\u8aaa\uff0c\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u8a13\u7df4\u904e\u7a0b\u6c92\u6709\u9019\u9ebc\u7c21\u55ae\uff0c\u800c\u4e14\u7814\u7a76\u4eba\u54e1\u9700\u8981\u8655\u7406\u6240\u8b02\u7684\u975e\u51f8\u51fd\u6578\u6700\u4f73\u5316\uff08nonconvex optimization\uff09\u3002\u9019\u7a2e\u6700\u4f73\u5316\u554f\u984c\u5e36\u4f86\u7684\u6311\u6230\u66f4\u5927\uff0c\u4e0d\u5c11\u7814\u7a76\u4eba\u54e1\u76f8\u4fe1\u9019\u7a2e\u969c\u7919\u662f\u96e3\u4ee5\u7a81\u7834\u7684\u3002\u5b78\u7fd2\u6f14\u7b97\u6cd5\u53ef\u80fd\u6703\u56f0\u5728\u6240\u8b02\u7684\u5c40\u90e8\u6975\u5c0f\u503c\uff08local minimum\uff09\uff0c\u56e0\u6b64\u7814\u7a76\u4eba\u54e1\u7121\u6cd5\u900f\u904e\u7a0d\u5fae\u8abf\u6574\u53c3\u6578\u4f86\u6e1b\u5c11\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u9810\u6e2c\u932f\u8aa4\u3002<\/p>\n<p>\u76f4\u5230\u53bb\u5e74\uff0c\u95dc\u65bc\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u56f0\u5728\u5c40\u90e8\u6975\u5c0f\u503c\u800c\u96e3\u4ee5\u8a13\u7df4\u7684\u9019\u7a2e\u8ff7\u601d\u624d\u5f97\u4ee5\u7834\u9664\u3002\u6211\u5011\u5728\u7814\u7a76\u904e\u7a0b\u4e2d\u767c\u73fe\uff0c\u7576\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u5920\u5927\uff0c\u53ef\u4ee5\u5927\u5e45\u964d\u4f4e\u5c40\u90e8\u6975\u5c0f\u503c\u554f\u984c\u3002\u5927\u90e8\u4efd\u7684\u5c40\u90e8\u6700\u5c0f\u503c\uff0c\u5176\u5be6\u76f8\u7576\u65bc\u67d0\u7a2e\u7a0b\u5ea6\u7684\u77e5\u8b58\u5b78\u7fd2\uff0c\u800c\u9019\u500b\u7a0b\u5ea6\u5e7e\u4e4e\u7b26\u5408\u5168\u5c40\u6975\u5c0f\u503c\u7684\u6700\u4f73\u503c\u3002<\/p>\n<p>\u7406\u8ad6\u4e0a\uff0c\u96d6\u7136\u6211\u5011\u53ef\u4ee5\u89e3\u6c7a\u6700\u4f73\u5316\u7684\u554f\u984c\uff0c\u4f46\u6253\u9020\u8d85\u904e\u5169\u6216\u4e09\u5c64\u5927\u578b\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u5617\u8a66\u7d93\u5e38\u5931\u6557\u3002\u7d42\u65bc\u57282005\u5e74\uff0cCIFAR\u8cc7\u52a9\u7684\u8a08\u756b\u6709\u4e86\u7a81\u7834\uff0c\u514b\u670d\u9019\u4e9b\u969c\u7919\u30022006\u5e74\uff0c\u6211\u5011\u5229\u7528\u9010\u5c64\u9032\u884c\u7684\u6280\u5de7\uff0c\u6210\u529f\u8a13\u7df4\u4e86\u66f4\u6df1\u5c64\u7684\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u3002<\/p>\n<p>2011\u5e74\uff0c\u6211\u5011\u627e\u5230\u66f4\u597d\u7684\u65b9\u6cd5\uff0c\u6539\u8b8a\u6bcf\u500b\u8655\u7406\u55ae\u5143\u57f7\u884c\u904b\u7b97\u7684\u65b9\u5f0f\uff0c\u8b93\u5b83\u5011\u66f4\u8cbc\u8fd1\u751f\u7269\u795e\u7d93\u5143\uff0c\u53ef\u4ee5\u8a13\u7df4\u66f4\u6df1\u5c64\u7684\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u3002\u800c\u4e14\u6211\u5011\u4e5f\u767c\u73fe\uff0c\u5728\u8a13\u7df4\u904e\u7a0b\u4e2d\u65bc\u4eba\u5de5\u795e\u7d93\u5143\u4e4b\u9593\u50b3\u905e\u7684\u8a0a\u865f\u6df7\u5165\u96a8\u6a5f\u96dc\u8a0a\uff08\u985e\u4f3c\u5927\u8166\u5167\u7684\u60c5\u6cc1\uff09\uff0c\u6709\u52a9\u65bc\u6df1\u5c64\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u5b78\u7fd2\u5982\u4f55\u6b63\u78ba\u8fa8\u8a8d\u5f71\u50cf\u6216\u8072\u97f3\u3002<\/p>\n<p>\u6709\u5169\u500b\u95dc\u9375\u56e0\u7d20\u662f\u6df1\u5ea6\u5b78\u7fd2\u6280\u8853\u6210\u529f\u7684\u63a8\u624b\u3002\u4e00\u500b\u56e0\u7d20\u662f\uff0c\u5176\u4ed6\u9818\u57df\u7684\u7814\u7a76\u4eba\u54e1\u70ba\u4e86\u96fb\u73a9\u904a\u6232\u8a2d\u8a08\u51fa\u65b0\u7684\u5716\u5f62\u8655\u7406\u5668\uff0c\u5176\u904b\u7b97\u901f\u5ea6\u63d0\u5347\u4e8610\u500d\uff0c\u6211\u5011\u624d\u5f97\u4ee5\u85c9\u6b64\u8a13\u7df4\u51fa\u66f4\u5927\u578b\u7684\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u3002\u53e6\u4e00\u500b\u56e0\u7d20\u662f\u9f90\u5927\u6709\u6a19\u8cc7\u6599\u96c6\uff08labeled data set\uff09\u7684\u51fa\u73fe\u3002\u8209\u4f8b\u4f86\u8aaa\uff0c\u5728\u67d0\u5f35\u5f71\u50cf\u4e2d\uff0c\u8c93\u53ea\u662f\u5176\u4e2d\u4e00\u500b\u5143\u7d20\uff0c\u7576\u5b78\u7fd2\u6f14\u7b97\u6cd5\u63a5\u6536\u5230\u9019\u5f35\u5f71\u50cf\u6642\uff0c\u53ef\u4ee5\u85c9\u7531\u6709\u6a19\u8cc7\u6599\u96c6\u8fa8\u8b58\u51fa\u6b63\u78ba\u7b54\u6848\uff1a\u8c93\u3002<\/p>\n<p>\u6700\u8fd1\u6df1\u5ea6\u5b78\u7fd2\u7372\u81f4\u6210\u529f\u7684\u53e6\u4e00\u500b\u539f\u56e0\uff0c\u662f\u5b83\u5b78\u6703\u5982\u4f55\u57f7\u884c\u4e00\u9023\u4e32\u904b\u7b97\uff0c\u9010\u6b65\u5efa\u69cb\u6216\u5206\u6790\u5f71\u50cf\u3001\u8072\u97f3\u6216\u5176\u4ed6\u8cc7\u6599\u3002\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u6df1\u5ea6\u5c31\u662f\u9019\u4e9b\u6b65\u9a5f\u7684\u6578\u91cf\u3002AI\u5728\u5f88\u591a\u8996\u89ba\u6216\u807d\u89ba\u8fa8\u8b58\u4efb\u52d9\u4e2d\u8868\u73fe\u512a\u7570\uff0c\u539f\u56e0\u5c31\u662f\u7814\u7a76\u4eba\u54e1\u5efa\u7acb\u4e86\u975e\u5e38\u591a\u5c64\u7684\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u3002\u4e8b\u5be6\u4e0a\uff0c\u6211\u5011\u5728\u6700\u8fd1\u7684\u7406\u8ad6\u7814\u7a76\u548c\u5be6\u9a57\u4e2d\u5df2\u7d93\u8b49\u660e\uff0c\u5fc5\u9808\u6709\u6df1\u5c64\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u624d\u80fd\u6709\u6548\u57f7\u884c\u9019\u4e9b\u6578\u5b78\u904b\u7b97\u3002<\/p>\n<p>\u6df1\u5c64\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u88e1\u7684\u6bcf\u4e00\u5c64\u90fd\u6703\u8f49\u63db\u8f38\u5165\uff0c\u7522\u751f\u8f38\u51fa\u4e26\u9001\u5f80\u4e0b\u4e00\u5c64\u3002\u66f4\u6df1\u5c64\u7684\u4eba\u5de5\u795e\u7d93\u7db2\u8def\uff0c\u8ddd\u96e2\u6700\u521d\u7684\u539f\u59cb\u8f38\u5165\u8f03\u9060\uff0c\u4ee3\u8868\u66f4\u62bd\u8c61\u7684\u6982\u5ff5\uff08\u898b\u4e0b\u5716\uff09\u3002\u5be6\u9a57\u8b49\u660e\uff0c\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u66f4\u6df1\u5c64\u7684\u4eba\u5de5\u795e\u7d93\u5143\uff0c\u50be\u5411\u5c0d\u61c9\u66f4\u62bd\u8c61\u7684\u8a9e\u610f\u6982\u5ff5\u3002\u4f8b\u5982\uff0c\u67d0\u5f35\u5f71\u50cf\u4e2d\u6709\u8fa6\u516c\u684c\uff0c\u5373\u4f7f\u8a13\u7df4\u904e\u7684\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u5206\u985e\u6a19\u7c64\u6c92\u6709\u300c\u8fa6\u516c\u684c\u300d\u9019\u500b\u6982\u5ff5\uff0c\u66f4\u6df1\u4e00\u5c64\u7684\u4eba\u5de5\u795e\u7d93\u5143\u5728\u8655\u7406\u904e\u7a0b\u4e2d\u4e5f\u80fd\u8fa8\u8b58\u5f71\u50cf\u4e2d\u7684\u8fa6\u516c\u684c\u3002\u8fa6\u516c\u684c\u9019\u500b\u6982\u5ff5\u53ef\u80fd\u53ea\u662f\u5176\u4e2d\u7684\u6b65\u9a5f\uff0c\u76ee\u6a19\u662f\u5728\u66f4\u6df1\u4e00\u5c64\u5275\u9020\u4e00\u500b\u66f4\u62bd\u8c61\u7684\u6982\u5ff5\uff0c\u800c\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u53ef\u80fd\u6703\u628a\u9019\u4e00\u5c64\u5206\u985e\u70ba\u300c\u8fa6\u516c\u5ba4\u5834\u666f\u300d\u3002<\/p>\n<p><a href=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2019\/06\/SA173_P44.jpg\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"aligncenter wp-image-82251 size-full\" src=\"https:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2019\/06\/SA173_P44.jpg\" alt=\"\" width=\"3508\" height=\"3189\" \/><\/a>(\u4f9d\u539f\u5716\u91cd\u7e6a)<\/p>\n<p><strong>\u8d85\u8d8a\u5716\u5f62\u8fa8\u8b58<\/strong><\/p>\n<p>\u76f4\u5230\u6700\u8fd1\uff0c\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u7684\u5091\u51fa\u4e4b\u8655\uff0c\u5927\u591a\u9084\u662f\u57f7\u884c\u8fa8\u8b58\u975c\u614b\u5f71\u50cf\u5167\u5bb9\u9019\u985e\u4efb\u52d9\uff0c\u4f46\u53e6\u4e00\u7a2e\u4eba\u5de5\u795e\u7d93\u7db2\u8def\u4e5f\u958b\u59cb\u5d84\u9732\u982d\u89d2\uff0c\u7cbe\u78ba\u4f86\u8aaa\uff0c\u5b83\u80fd\u8655\u7406\u4f9d\u5e8f\u767c\u751f\u7684\u4e8b\u4ef6\u3002\u6211\u5011\u5df2\u7d93\u8b49\u660e\uff0c\u905e\u8ff4\u795e\u7d93\u7db2\u8def\uff08recurrent neural 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