{"id":3497,"date":"2020-05-10T00:14:38","date_gmt":"2020-05-09T16:14:38","guid":{"rendered":"http:\/\/www.sniper97.cn\/?p=3497"},"modified":"2020-05-10T00:14:38","modified_gmt":"2020-05-09T16:14:38","slug":"%e3%80%90%e6%b7%b1%e5%ba%a6%e5%ad%a6%e4%b9%a0%e3%80%91%e8%af%8d%e5%b5%8c%e5%85%a5","status":"publish","type":"post","link":"http:\/\/www.sniper97.cn\/index.php\/note\/deep-learning\/base\/3497\/","title":{"rendered":"\u3010\u6df1\u5ea6\u5b66\u4e60\u3011\u8bcd\u5d4c\u5165"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/miro.medium.com\/max\/2000\/1*52X2L01wpUjy39lIjofC7g.jpeg\" alt=\"\"\/><figcaption>\u4e00\u4e2a\u82f1\u8bed\u548c\u5fb7\u8bed\u7684\u8bcd\u5d4c\u5165\u8868\u3002\u5355\u8bcd\u7684\u8bed\u4e49\u901a\u8fc7\u4e0a\u4e0b\u6587\u8fdb\u884c\u63a8\u65ad\uff0c\u56e0\u6b64\u76f8\u4f3c\u7684\u610f\u601d\u7684\u8bcd\u6c47\u4f4d\u7f6e\u5f88\u8fd1\u3002\u6765\u6e90\u3010<a href=\"https:\/\/stanford.edu\/~lmthang\/bivec\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Luong et al\uff08\u5728\u65b0\u7a97\u53e3\u6253\u5f00\uff09\">Luong et al<\/a>\u3011<\/figcaption><\/figure>\n\n\n<p>\u8bcd\u5d4c\u5165\u7684\u4e3b\u8981\u601d\u60f3\u662f\u5c06\u6587\u672c\u8f6c\u6362\u4e3a\u6570\u5b57\u3002<\/p>\n\n\n<p>\u8fd9\u79cd\u8f6c\u6362\u662f\u5fc5\u8981\u7684\uff0c\u56e0\u4e3a\u8bb8\u591a\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\uff08\u5305\u62ec\u6df1\u5ea6\u7f51\u7edc\uff09\u9700\u8981\u5b83\u4eec\u7684\u8f93\u5165\u662f\u8fde\u7eed\u7684\u5411\u91cf\uff0c\u4ed6\u4eec\u5e76\u4e0d\u80fd\u5904\u7406\u7eaf\u6587\u672c\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n<p>\u56e0\u6b64\uff0c\u50cf\u8bcd\u5d4c\u5165\u8fd9\u6837\u7684\u81ea\u7136\u8bed\u8a00\u5efa\u6a21\u6280\u672f\u88ab\u7528\u6765\u5c06\u5355\u8bcd\u6216\u77ed\u8bed\u4ece\u8bcd\u6c47\u8868\u6620\u5c04\u5230\u4e00\u4e2a\u7531\u6570\u5b57\u7ec4\u6210\u7684\u7c7b\u4f3c\u5411\u91cf\u3002\u9664\u4e86\u53ef\u4ee5\u901a\u8fc7\u5b66\u4e60\u7b97\u6cd5\u8fdb\u884c\u5904\u7406\u5916\uff0c\u8fd9\u79cd\u5411\u91cf\u8fd8\u6709\u4e24\u4e2a\u91cd\u8981\u7684\u4f18\u70b9\uff1a<\/p>\n\n\n<ul><li><strong>\u964d\u7ef4<\/strong>\u2014\u2014\u8fd9\u662f\u4e00\u79cd\u66f4\u6709\u6548\u7684\u65b9\u5f0f<\/li><li><strong>\u4e0e\u4e0a\u4e0b\u6587\u7c7b\u4f3c<\/strong>\u2014\u2014\u8fd9\u662f\u4e00\u79cd\u66f4\u597d\u7684\u8868\u793a\u65b9\u5f0f<\/li><\/ul>\n\n\n<p>\u6211\u4eec\u77e5\u9053Bag of Words\u65b9\u6cd5\u53ef\u4ee5\u4ea7\u751f\u4e00\u4e2a\u975e\u5e38\u5927\u3001\u975e\u5e38\u7a00\u758f\u7684\u4e00\u4e2aone hot\u7f16\u7801\uff0c\u5176\u4e2d\u77e9\u9635\u7684\u957f\u5ea6\u5c31\u662f\u8bcd\u6c47\u8868\u7684\u5927\u5c0f\u3002\u8bcd\u5d4c\u5165\u7684\u76ee\u7684\u662f\u521b\u9020\u4e00\u4e2a\u66f4\u4f4e\u7ef4\u7684\u5411\u91cf\u8868\u793a\u3002\u53eb<strong>\u8bcd\u5411\u91cf<\/strong>\uff08word vectors\uff09\u3002<\/p>\n\n\n<p>\u8bcd\u5411\u91cf\u7528\u4e8e\u8bed\u4e49\u5206\u6790\uff0c\u4ece\u6587\u672c\u4e2d\u63d0\u53d6\u4fe1\u606f\uff0c\u7136\u540e\u7528\u6765\u505a\u81ea\u7136\u8bed\u8a00\u7406\u89e3\u3002\u4e00\u4e2a\u8bed\u8a00\u6a21\u578b\u80fd\u591f\u9884\u6d4b\u6587\u672c\u4fe1\u606f\uff0c\u5c31\u9700\u8981\u77e5\u9053\u4e0a\u4e0b\u6587\u5355\u8bcd\u7684\u76f8\u4f3c\u6027\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u60f3\u627e\u5230\u6c34\u679c\u7684\u5355\u8bcd\uff08\u6bd4\u5982\u82f9\u679c\u3001\u6a58\u5b50\uff09\uff0c\u90a3\u6211\u4eec\u5c31\u5f88\u53ef\u80fd\u5728\u91c7\u6458\u3001\u5403\u6216\u8005\u69a8\u6c41\u9644\u8fd1\u627e\u5230\u5b83\u4eec\uff0c\u800c\u4e0d\u4f1a\u627e\u5230\u98de\u673a\u8fd9\u4e2a\u8bcd\u3002<\/p>\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2020\/04\/image.png\" alt=\"\"\/><\/figure>\n\n\n<p>\u901a\u8fc7\u4f7f\u7528\u8bcd\u5d4c\u5165\u6765\u4fdd\u6301\u8fd9\u4e9b\u76f8\u4f3c\u7684\u7279\u5f81\uff0c\u56e0\u6b64\u6587\u4e2d\u7ecf\u5e38\u51fa\u73b0\u7684\u5355\u8bcd\u5728\u5411\u91cf\u7a7a\u95f4\u4e2d\u4e5f\u4f1a\u975e\u5e38\u63a5\u8fd1\u3002\u8981\u4e86\u89e3\u8fd9\u4e2a\u4e3a\u4ec0\u4e48\u6709\u6548\uff0c\u8bf7\u67e5\u770b<a href=\"https:\/\/blog.acolyer.org\/2016\/04\/21\/the-amazing-power-of-word-vectors\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"The amazing power of word vectors\uff08\u5728\u65b0\u7a97\u53e3\u6253\u5f00\uff09\">The amazing power of word vectors<\/a>.<\/p>\n\n\n<p>\u6240\u4ee5\u4ec0\u4e48\u662f<strong>\u8bcd\u5d4c\u5165<\/strong>\u5462\uff1f\u5b83\u662f\u6307\uff1a<strong>\u6784\u5efa\u4e00\u4e2a\u4f4e\u7ef4\u7684\u5411\u91cf\u6765\u8868\u793a\u8bed\u6599\u5e93\u4e2d\u7684\u6587\u672c\uff0c\u5b83\u4fdd\u7559\u4e86\u5355\u8bcd\u7684\u4e0a\u4e0b\u6587\u76f8\u4f3c\u6027<\/strong>\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\">Word2Vec<\/h2>\n\n\n<p>\u73b0\u5728\u6211\u4eec\u77e5\u9053\u4e86\u4ed6\u662f\u4ec0\u4e48\u4e86\uff0c\u90a3\u4e48\u4ed6\u662f\u600e\u4e48\u5de5\u4f5c\u7684\u5462\uff1f\u5982\u679c\u4f60\u4e4b\u524d\u9047\u5230\u8fc7\u964d\u7ef4\uff0c\u4f60\u5c31\u4f1a\u77e5\u9053\u8fd9\u901a\u5e38\u90fd\u662f\u4f7f\u7528\u65e0\u76d1\u7763\u5b66\u4e60\u6765\u5b8c\u6210\u7684\u3002\u8fd9\u5c31\u662f\u6700\u8457\u540d\u7684\u8bcd\u5d4c\u5165\u65b9\u6cd5word2vec\u4f7f\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n<p>\u6709\u4e24\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0word2vec\uff0cCBOW\uff08continuous Bag-Of-Words\uff09\u548cSkip-gram\u3002<\/p>\n\n\n<p>\u5728CBOW\u4e2d\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u56f4\u7ed5\u76ee\u6807\u8bcd\u7684\u7a97\u53e3\uff0c\u7136\u540e\u8003\u8651\u5b83\u5468\u56f4\u7684\u5355\u8bcd\uff08\u4e0a\u4e0b\u6587\uff09\u3002\u6211\u4eec\u628a\u8fd9\u4e9b\u8bcd\u4f5c\u4e3a\u8f93\u5165\uff0c\u8f93\u5165\u5230\u6211\u4eec\u7684\u7f51\u7edc\u4e2d\uff0c\u7136\u540e\u8f93\u5165\u8ba9\u4ed6\u9884\u6d4b\u76ee\u6807\u5355\u8bcd\u3002<\/p>\n\n\n<p>Skip-gram\u5219\u6070\u6070\u76f8\u53cd\uff0c\u4f60\u6709\u4e00\u4e2a\u76ee\u6807\u5355\u8bcd\uff0c\u4f60\u8bd5\u7740\u9884\u6d4b\u8fd9\u4e2a\u5355\u8bcd\u5468\u56f4\u7684\u5355\u8bcd\uff0c\u4e5f\u5c31\u662f\u9884\u6d4b\u8fd9\u4e2a\u5355\u8bcd\u5468\u56f4\u7684\u4e0a\u4e0b\u6587\u3002<\/p>\n\n\n<p>\u8f93\u5165\u5b57\u4f5c\u4e3a\u4e00\u4e2aone-hot\u7f16\u7801\u7f16\u7801\u5411\u91cf\uff0c\u7136\u540e\u901a\u8fc7\u4e00\u4e2a\u7ebf\u6027\u7684\u9690\u85cf\u5c42\uff0c\u7136\u540e\u8fdb\u5165\u4e00\u4e2asoftamx\u8fdb\u884c\u9884\u6d4b\u3002\u8fd9\u91cc\u7684\u601d\u60f3\u662f\u8bad\u7ec3\u9690\u85cf\u5c42\u7684\u6743\u91cd\u77e9\u9635\u6765\u627e\u5230\u5355\u8bcd\u7684\u6709\u6548\u8868\u793a\u3002\u8fd9\u4e2a\u6743\u91cd\u901a\u5e38\u79f0\u4e3a\u5d4c\u5165\u77e9\u9635\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u67e5\u8be2\u8868\u7684\u67e5\u8be2\u3002<\/p>\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/miro.medium.com\/max\/1400\/0*kx5_UXWs7Q_c071d.\" alt=\"\"\/><figcaption>word2vec\u7ed3\u6784\u62a5\u8d27\u4e00\u4e2a\u9690\u85cf\u5c42\u548c\u4e00\u4e2a\u8f93\u51fa\u5c42<\/figcaption><\/figure>\n\n\n<p><a rel=\"noreferrer noopener\" aria-label=\"Xin Rong\uff08\u5728\u65b0\u7a97\u53e3\u6253\u5f00\uff09\" href=\"https:\/\/www.quora.com\/profile\/Xin-Rong-1\" target=\"_blank\">Xin Rong<\/a>\u521b\u5efa\u4e86\u4e00\u4e2a\u975e\u5e38\u6574\u6d01\u7684\u53ef\u89c6\u5316\u7cfb\u7edf\uff0c\u8fd9\u4e2a\u7cfb\u7edf\u5c55\u793a\u4e86<a rel=\"noreferrer noopener\" aria-label=\"\u8bcd\u5d4c\u5165\u662f\u600e\u6837\u8bad\u7ec3\u7684\uff08\u5728\u65b0\u7a97\u53e3\u6253\u5f00\uff09\" href=\"https:\/\/ronxin.github.io\/wevi\/\" target=\"_blank\">\u8bcd\u5d4c\u5165\u662f\u600e\u6837\u8bad\u7ec3\u7684<\/a>\uff0c\u5e76\u7ed9\u51fa\u4e86\u4e00\u4e2a\u975e\u5e38\u68d2\u7684<strong><a rel=\"noreferrer noopener\" aria-label=\"\u6f14\u8bb2\uff08\u5728\u65b0\u7a97\u53e3\u6253\u5f00\uff09\" href=\"https:\/\/www.bilibili.com\/video\/bv1Kz411q7x9\" target=\"_blank\">\u6f14\u8bb2<\/a><\/strong>\u3002<\/p>\n\n\n<p>\u5d4c\u5165\u77e9\u9635\u7684\u5927\u5c0f\u662f\u7531\u9690\u85cf\u5c42\u795e\u7ecf\u5143\u4e2a\u6570\uff08\u5d4c\u5165\u5927\u5c0f\uff09\u51b3\u5b9a\u7684\u3002\u56e0\u6b64\uff0c\u5982\u679c\u670910000\u4e2a\u5355\u8bcd\u548c300\u4e2a\u9690\u85cf\u5355\u5143\uff0c\u90a3\u4e48\u77e9\u9635\u7684\u5927\u5c0f\u5c06\u662f10000*300\uff08\u56e0\u4e3a\u6211\u4eec\u4f7f\u7528one-hot\u7f16\u7801\u4f5c\u4e3a\u8f93\u5165\uff09\u3002\u8ba1\u7b97\u540e\uff0c\u6211\u4eec\u5c06\u5f97\u5230\u4e00\u4e2a\u8bcd\u5411\u91cf\uff1a<\/p>\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/miro.medium.com\/max\/1242\/0*IFv_QtwBNHfGy1Tm.\" alt=\"\"\/><figcaption>\u56e0\u6b64\uff0c\u8fd9\u4e2a\u5355\u8bcd\uff08\u8bcd\u6c47\u8868\u4e2d\u7684\u7684\u7b2c\u56db\u4e2a\uff09\u7684\u5411\u91cf\u662f\uff0810\uff0c12\uff0c19\uff09<\/figcaption><\/figure>\n\n\n<p>\u4e8e\u662f\uff0c\u6bcf\u4e2a\u5355\u8bcd\u90fd\u6709\u4e00\u4e2a\u81ea\u5df1\u7684\u5411\u91cf\uff0c\u56e0\u6b64\u547d\u540d\uff1aWord2Vec\u3002<\/p>\n\n\n<p>\u5d4c\u5165\u5927\u5c0f\uff08\u65e2\u9690\u85cf\u5c42\u5927\u5c0f\uff09\u5f80\u5f80\u6bd4\u8bcd\u6c47\u8868\u8981\u5c0f\u5f88\u591a\uff08\u5d4c\u5165\u5927\u5c0f\u901a\u5e38\u53ea\u6709\u51e0\u767e\uff0c\u800c\u8bcd\u6c47\u8868\u8981\u6570\u4e07\u4e2a\uff09\u3002\u6240\u4ee5\u4f7f\u7528\u7684\u8bcd\u5d4c\u5165\u5927\u5c0f\u662f\u4e00\u79cd\u6743\u8861\uff1a\u66f4\u5927\u7684\u8bcd\u5d4c\u5165\u610f\u5473\u7740\u66f4\u9ad8\u7684\u8ba1\u7b97\u590d\u6742\u5ea6\uff0c\u4e5f\u5c31\u662f\u610f\u5473\u7740\u66f4\u957f\u7684\u8fd0\u884c\u65f6\u95f4\uff0c\u4f46\u662f\u80fd\u591f\u83b7\u53d6\u5230\u66f4\u5fae\u5999\u5730\u8868\u793a\u548c\u66f4\u597d\u7684\u6a21\u578b\u3002<\/p>\n\n\n<p>\u8bcd\u5d4c\u5165\u6709\u4e00\u4e2a\u6709\u8da3\u7684\u7279\u5f81\uff0c\u56e0\u4e3a\u5b83\u8868\u793a\u7684\u662f\u8bcd\u4e0a\u4e0b\u6587\u4e4b\u95f4\u7684\u76f8\u4f3c\u5ea6\uff0c\u56e0\u6b64\u4ed6\u4eec\u53ef\u4ee5\u8fdb\u884c\u7b97\u6570\u8fd0\u7b97\u3002\u4e00\u4e2a\u7ecf\u5178\u7684\u4f8b\u5b50\u5c31\u662f\u7537\u4eba\u51cf\u53bb\u56fd\u738b\u52a0\u4e0a\u5973\u4eba\u7b49\u4e8e\u5973\u738b\u3002<\/p>\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/miro.medium.com\/max\/1400\/0*1ndbQpbmRrzZWTjO.png\" alt=\"\"\/><figcaption>\u8bcd\u5d4c\u5165\u57fa\u4e8e\u4e0a\u4e0b\u6587\u7684\u76f8\u4f3c\u6027\u3002\u53ef\u80fd\u662f\u6027\u522b\u3001\u65f6\u6001\u3001\u5730\u7406\u4f4d\u7f6e\u6216\u5176\u4ed6\u5b8c\u5168\u4e0d\u540c\u7684\u4e1c\u897f\u3002<\/figcaption><\/figure>\n\n\n<p>\u53e6\u4e00\u79cd\u6307\u7684\u63d0\u5230\u7684\u5d4c\u5165\u65b9\u6cd5\u662fGloVe\uff0c\u4ed6\u901a\u8fc7\u7d2f\u8ba1\u5171\u540c\u51fa\u73b0\u7684\u6b21\u6570\uff0c\u548cWord2Vec\u6709\u7565\u5fae\u7684\u4e0d\u540c\u3002<\/p>\n\n\n<p>word2vec\u7684\u4e3b\u8981\u89c2\u70b9\u662f\uff0c\u6211\u4eec\u53ef\u4ee5\u8981\u6c42\u5728\u5355\u8bcd\u5411\u91cf\u7684\u57fa\u672c\u7b97\u6cd5\u4e0b\u4fdd\u7559\u8bed\u4e49\u4fe1\u606f\uff0c\u4f8b\u5982king &#8211; man + woman = queen\u3002(\u5982\u679c\u4f60\u95ee\u6211\u7684\u8bdd\uff0c\u6211\u4f1a\u8bf4\u5b83\u975e\u5e38\u4f18\u96c5\u3001\u624d\u534e\u6a2a\u6ea2)Mikolov\u7b49\u4eba\u901a\u8fc7 CBOW \u548c 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