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\u964d\u4e0d\u540c\u7279\u5f81\u878d\u5408\u8d77\u6765\u3002<\/p>\n<\/p>\n<p>\u8fd9\u662f\u6bd4\u8f83\u52a0\u5165\u7279\u5f81\u5bf9\u4e8e\u6548\u679c\u7684\u5f71\u54cd\uff0c\u8bc4\u6d4b\u4efb\u52a1\u6709lte\u4efb\u52a1,CTR\u7684\u4efb\u52a1\u548c\u8d2d\u4e70\u529b\u9884\u4f30\u7684\u4efb\u52a1\u3002\u6211\u4eec\u770b\u5230\u5c31\u662f\u8bf4\u968f\u7740\u7279\u5f81\u7684\u589e\u52a0\u7684\u8bdd\uff0c\u6211\u4eec\u7684AUC\u51c6\u786e\u7387\u5176\u5b9e\u8fd8\u662f\u6709\u660e\u663e\u7684\u63d0\u5347\u7684\uff0c\u52a0\u4e0aattention\u4f1a\u6709\u8fdb\u4e00\u6b65\u7684\u63d0\u5347\u3002\u8bf4\u660e\u901a\u8fc7\u52a0\u5165\u66f4\u591a\u7ef4\u5ea6\u7684\u4fe1\u606f\uff0c\u505a\u591a\u7ef4\u4fe1\u606f\u7684\u878d\u5408\uff0c\u5bf9\u6211\u4eec\u8fd9\u4e2a\u6574\u4f53\u7684\u51c6\u786e\u7387\u6709\u660e\u663e\u7684\u63d0\u5347\u7684\u3002 \u7136\u540e\u662f\u5bf9\u4e8eLTR\u7684\uff0cCTR\u4efb\u52a1AUC\uff0c\u53d1\u73b0\u6211\u4eec\u901a\u8fc7attention\u7684\u591a\u6a21\u4fe1\u606f\u7684\u878d\u5408\u5bf9\u6bd4\u7b80\u5355\u62fc\u63a5\u7684\u65b9\u6cd5\uff0c\u6548\u679c\u662f\u6709\u5f88\u660e\u663e\u63d0\u5347\u3002<\/p>\n<\/p>\n<p>\u90a3\u524d\u9762\u8bb2\u5230\u8fd9\u4e2a\u5176\u5b9e\u6211\u4eec\u53ea\u662f\u5b8c\u6210\u4e86\uff0c\u5b8c\u6210\u4e86\u8f93\u5165\u5546\u54c1ID\u7684embedding\uff0c\u4e0b\u4e00\u6b65\u600e\u4e48\u505aUser\u7684embedding\uff0c\u8fd9\u4e00\u5c42\u662f\u6211\u4eecLSTM\u7684\u8f93\u51fa\uff0c\u6211\u4eec\u8fd9\u91cc\u9762\u5f15\u7528Query\u548cUser profile\u4fe1\u606f\uff0c\u628a\u884c\u4e3a\u5e8f\u5217\u7684\u8f93\u51fa\u901a\u8fc7attention\u6700\u7ec8\u5f62\u6210\u4e00\u4e2a\u7edf\u4e00\u7528\u6237\u7684\u8868\u5f81\u3002\u8fd9\u6837\u505a\u7684\u4e00\u4e2a\u76ee\u7684\u662f\u7528\u6237\u7684\u70b9\u51fb\u884c\u4e3a\u5e8f\u5217\u662f\u6bd4\u8f83\u6742\u4e71\u7684\uff0c\u53ef\u80fd\u524d\u9762\u70b9\u8fc7\u624b\u673a\uff0c\u70b9\u8fc7\u978b\u5b50\uff0c\u70b9\u8fc7\u88d9\u5b50\uff0c\u90a3\u4eca\u5929\u4ed6\u6765\u641c\u88d9\u5b50\uff0c\u8fd9\u65f6\u5019\u6211\u4eec\u77e5\u9053\u88d9\u5b50\u4f1a\u6bd4\u8f83\u91cd\u8981\uff0c\u524d\u9762\u70b9\u7684\u624b\u673a\u548c\u978b\u5b50\u6ca1\u90a3\u4e48\u91cd\u8981\u3002<\/p>\n<\/p>\n<p>\u8fd9\u662f\u6211\u4eec\u79bb\u7ebf\u6a21\u578b\u8bad\u7ec3\u7684\u8fd9\u6837\u7684\u5927\u6982\u7684\u6d41\u7a0b\u3002<\/p>\n<p>\u6211\u4eec\u4eca\u5e74\u56e0\u4e3a\u5b9e\u73b0\u4e86\u5728\u7ebf\u548c\u79bb\u7ebf\u7684\u6df7\u5e03\uff0c\u6211\u4eec\u7528\u7684\u8d44\u6e90\u6bd4\u4ee5\u524d\u591a\u7684\u591a\uff0c\u8fd9\u4e2a\u6a21\u578b\u662f\u7528\u5230\u4e86\u4e09\u4e07\u4e2aCPU\u7684\u6838\u3002\u7136\u540e\u8fd9\u662f\u6211\u4eec\u5728\u7ebf\u5b66\u4e60\u7684\u6d41\u7a0b\uff0c\u4e3a\u4ec0\u4e48\u505a\u5728\u7ebf\u5b66\u4e60\uff0c\u4e3b\u8981\u8fd8\u662f\u8bf4\u524d\u9762\u8bb2\u56e0\u4e3a\u5546\u54c1\u6216\u8005\u7528\u6237\u5b83\u7684\uff0c\u5b83\u8fd9\u4e2a\u8c01\u5148\u53d7\u7ebf\u4e0a\u73af\u5883\u7684\u5f71\u54cd\u662f\u6bd4\u8f83\u5feb\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u53cc11\u5f53\u5929\u5176\u5b9e\u4e5f\u662f\u5b9e\u73b0\u4e86\u5728\u7ebf\u9009\u62e9\u7684\u6d41\u7a0b\u3002<\/p>\n<\/p>\n<p>\u7136\u540e\u540c\u65f6\u6211\u4eec\u8fd8\u505a\u4e86\u5927\u91cf\u7684\u8bd5\u9a8c\uff0c\u4e00\u4e2a\u662f\u8bf4\u7528CNN\u8fd8\u662fLSTM\u597d\uff0c\u56e0\u4e3a\u524d\u9762\u6211\u521a\u624d\u524d\u9762\u8bb2\uff0c\u4e00\u4e2a\u7528\u6237\u70b9\u51fb\u884c\u4e3a\uff0c\u5b83\u662f\u4e2a\u884c\u4e3a\u5e8f\u5217\uff0c\u8fd9\u4e2a\u884c\u4e3a\u5e8f\u5217\u5230\u5e95\u662f\u7528\u54ea\u4e2a\u6548\u679c\u66f4\u597d\u3002\u5176\u5b9eLSTM\u6ca1\u6709\u8fbe\u5230\u9884\u671f\u90a3\u4e48\u597d\uff0c\u8fd9\u4e2a\u4e3b\u8981\u662f\u56e0\u4e3a\u6ca1\u6709attention\u3002\u4e0b\u9762\u8fd9\u4e24\u4e2a\u5bf9\u6bd4\u7684\u662f\u7aef\u5230\u7aef\u8bad\u7ec3\u548c\u9884\u8bad\u7ec3\u52a0fine tuning,\u6211\u4eec\u8fd9\u91cc\u9762\u4e5f\u505a\u4e86\u4e24\u4e2a\u8bd5\u9a8c\uff0c\u4e00\u4e2a\u662f\u505a\u9884\u8bad\u7ec3\uff0c\u9884\u8bad\u7ec3\u5c31\u662f\u6211\u4eec\uff0c\u6bd4\u5982\u8bf4\u5148\u9a8c\u4e00\u4e2a\u975e\u76d1\u7763\u7684\u65b9\u6cd5\uff0c\u5b8c\u6210ID\u7684embedding\uff0c\u7136\u540e\u5728\u57fa\u4e8e\u6a21\u578b\u505a\u4e00\u4e9bFine tuning\uff0c\u8fd9\u4e2a\u5c31\u662f\u6211\u4eecitem embedding\u662f\u4e00\u8d77\u6765\u5b66\u7684\uff0c\u5176\u5b9e\u6211\u4eec\u53d1\u73b0\u5c31\u8bf4\u7aef\u5230\u7aef\u7684\u5b66\u4e60\u6bd4Fine tuning\u7684\u6548\u679c\u597d\u5f97\u975e\u5e38\u591a\u7684\u3002<\/p>\n<p>\u7136\u540e\u8fd9\u4e2a\u5bf9\u6bd4Multi task\u548csingle task\u7684\u5dee\u522b\uff0c\u8fd9\u91cc\u7ea2\u7ebf\u662fsingle task\uff0c\u84dd\u7ebf\u662f\u6211\u4eec\u7684Multi task\uff0c\u50cf\u8fd9\u4e2a\u6765\u770b\u7684\u8bdd\uff0c\u6211\u4eecMulti task\u7684\u6548\u679c\u6bd4single task\u6548\u679c\u8fd8\u8981\u597d\uff0c\u8fd9\u4e2a\u89e3\u91ca\u7684\u4e3b\u8981\u662f\uff0c\u4f60\u505a\u591a\u4efb\u52a1\u5b66\u4e60\u7684\u65f6\u5019\u6bcf\u4e00\u4e2a\uff0c\u90a3\u4f60\u5176\u5b83\u4efb\u52a1\u90fd\u662f\u8fd9\u4e2a\u4efb\u52a1\u7684\u4e00\u4e2a\u6b63\u5219\u9879\uff0c\u8fd9\u4e2a\u4f60\u5f97\u5230\u7528\u6237\u7684\u8868\u5f81\uff0c\u5b83\u7684\u6cdb\u5316\u80fd\u529b\u662f\u66f4\u5f3a\u7684\uff0c\u6240\u4ee5\u4f60\u5728\u9884\u6d4b\u96c6\u4e0a\u5f97\u5230\u4e00\u4e2a\u66f4\u597d\u7684\u51c6\u786e\u7387\u3002<\/p>\n<\/p>\n<p>\u7136\u540e\u56e0\u4e3a\u641c\u7d22\u91cc\u9762\u65b0\u7684\u4efb\u52a1\u4f1a\u8d8a\u52a0\u8d8a\u591a\uff0c\u4eca\u5929\u6211\u4eec\u53ea\u505a\u4e86\u4e09\u4e2a\uff0c\u968f\u7740\u641c\u7d22\u7684\u4e2a\u6027\u5316\u505a\u7684\u8d8a\u6765\u8d8a\u6df1\u5165\uff0c\u5982\u679c\u6709\u65b0\u7684\u4e1a\u52a1\u4ee5\u540e\uff0c\u5bf9\u4e8e\u6211\u4eec\u8fd9\u4e2a\u65b9\u6cd5\u80fd\u4e0d\u80fd\u8fc1\u79fb\u5230\u65b0\u7684\u4efb\u52a1\uff0c\u4e5f\u662f\u505a\u4e86\u4e09\u4e2a\u8bd5\u9a8c\uff0c\u7ea2\u7ebf\u7684\u662f\u7aef\u5230\u7aef\u7684\uff0c\u6211\u52a0\u4e00\u4e2a\u65b0\u7684\u4efb\u52a1\u4ee5\u540e\u7528\u6211\u4e4b\u524d\u7684\u65b9\u6cd5\uff0c\u7aef\u5230\u7aef\u7684\u53bb\u5b66\uff0c\u6211\u4e0d\u52a0\u5176\u5b83\u4efb\u52a1\uff0c\u7b2c\u4e8c\u4e2a\u505a\u7b80\u5355\u7684transfer learning\uff0c\u628aUser\u7684\u8fd9\u4e2a\u8868\u5f81\u8fd9\u5757\u56fa\u5b9a\u4e0b\u6765\uff0c\u53ea\u505a\u4e0b\u9762\u7684Fine tuning\uff1b\u7b2c\u4e09\u5c31\u662f\u7528\u9884\u8bad\u7ec3\u597d\u7684\u6a21\u578b\u7aef\u5230\u7aef\u7684\u505afine tuning\u5b66\u4e60\uff0c\u5176\u5b9e\u6211\u4eec\u8fd9\u4e2a\u65b9\u6cd5\u6bd4\u7aef\u5230\u7aef\u7684\u5b66\u4e60\uff0c\u6bd4transfer learning\u6548\u679c\u5176\u5b9e\u4e5f\u662f\u8981\u66f4\u597d\u7684\u3002<\/p>\n<p>\u7136\u540e\u8fd9\u4e2a\u5c31\u662f\u6211\u4eec\u4e0a\u4e0b\u6587attention\u7684\u4e00\u4e2a\u89e3\u91ca\u3002\u8fd9\u662f\u7528\u6237\u7684\u884c\u4e3a\u5e8f\u5217\uff0c\u770b\u4e86\u8863\u670d\u5e3d\u5b50\u978b\u5b50\uff0c\u4f1e\u4e4b\u7c7b\u7684\uff0c\u6211\u4eec\u770b\u5230\u6211\u4eec\u5728\u641c\u88d9\u5b50\u7684\u65f6\u5019\uff0c\u6211\u4eec\u770b\u5230\u5c31\u662f\u8bf4\u7528\u6237\u7b2c\u4e00\u65f6\u95f4\u70b9\u8fc7\u7684\u88d9\u5b50\uff0c\u8fd9\u4e24\u4ef6\u88d9\u5b50\u548c\u8fd9\u4ef6\u88d9\u5b50\uff0c\u5b83\u7684\u91cd\u8981\u6027\u4f1a\u66f4\u9ad8\uff0c\u4f1e\u7684\u91cd\u8981\u6027\u5c31\u6bd4\u8f83\u5c0f\uff0c\u4e5f\u9a8c\u8bc1\u4e86\u6211\u4eec\u7684attention\u60f3\u6cd5\u3002<\/p>\n<\/p>\n<p>\u4e0b\u9762\u6211\u518d\u8bb2\u4e00\u4e0b\u6392\u5e8f\u6a21\u578b\u3002\u5176\u5b9e\u5728\u6700\u65e9\u505a\u4e2a\u6027\u5316\u6392\u5e8f\u7684\u65f6\u5019\u5c31\u610f\u8bc6\u5230\u4e00\u4e2a\u95ee\u9898\uff0c\u5728\u4e0d\u540c\u573a\u666f\u4e0b\u4e0d\u540c\u7684\u7279\u5f81\u7684\u91cd\u8981\u6027\u662f\u4e0d\u4e00\u6837\u7684\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u50cf\u8fd9\u79cd3C\u6570\u7801\u6216\u8005\u6807\u7c7b\uff0c\u6211\u4eec\u5bf9\u54c1\u724c\u7684\u5173\u6ce8\u5ea6\u6bd4\u8f83\u9ad8\uff0c\u4f46\u662f\u6bd4\u5982\u8bf4\u6211\u4eec\u6709\u4e9b\u4eba\u4e70\u8863\u670d\u7684\u65f6\u5019\uff0c\u6216\u8005\u4e70\u914d\u4ef6\u7684\u65f6\u5019\u4e0d\u4f1a\u600e\u4e48\u770b\u4e2d\u54c1\u724c\uff0c\u66f4\u591a\u7684\u770b\u4e2d\u529f\u80fd\u548c\u6027\u4ef7\u6bd4\u3002\u5728\u4e0d\u540c\u7684\u573a\u666f\u4e0b\u9762\uff0c\u751a\u81f3\u4e0d\u540c\u7684\u4eba\u7fa4\u4e0b\u9762\uff0c\u4e2a\u6027\u5316\u7684\u7279\u5f81\uff0c\u5b83\u7684\u91cd\u8981\u6027\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u6ca1\u6cd5\u7528\u4e00\u4e2a\u7edf\u4e00\u7684\u6743\u91cd\u7edf\u4e00\u7684\u6a21\u578b\u6765\u6392\u5e8f\u3002\u6240\u4ee5\u8fd9\u91cc\u9762\u5343\u4eba\u5343\u9762\u7684\u6392\u5e8f\u6a21\u578b\uff0c\u4ee5\u524d\u8bf4\u5343\u4eba\u5343\u9762\uff0c\u6bcf\u4e2a\u4eba\u6709\u4e0d\u540c\u7684\u7ed3\u679c\uff0c\u6392\u5e8f\u6a21\u578b\u6700\u597d\u505a\u5230\u5343\u4eba\u5343\u9762\u3002\u6700\u65e9\u7684\u505a\u6cd5\uff0c\u6211\u4eec\u4eba\u5de5\u7684\u6839\u636e\u8fd9\u4e2a\u884c\u4e1a\u52a0\u4e0a\u4eba\u7fa4\uff0c\u5212\u6210\u4e00\u5343\u4efd\uff0c\u6bcf\u4e00\u4efd\u6570\u636e\u4f1a\u5f7c\u6b64\u72ec\u7acb\uff0c\u6240\u4ee5\u8fd9\u91cc\u9762\u6709\u4e00\u5343\u4e2a\u6a21\u578b\uff0c\u7528\u6237\u6765\u4e86\u4ee5\u540e\u6839\u636e\u5b83\u7684Query\uff0c\u6839\u636e\u7528\u6237\u7684\u4e00\u4e2a\u72b6\u6001\uff0c\u5c31\u4f1a\u843d\u5230\u5176\u4e2d\u7684\u4e00\u4e2a\u6a21\u578b\uff0c\u8fd9\u91cc\u6bcf\u4e2a\u662f\u4e00\u4e2aLTR\u6a21\u578b\uff0c\u662f\u4e00\u4e2a\u7ebf\u6027\u6a21\u578b\u3002\u8fd9\u4e2a\u5927\u6982\u662f\u4e00\u4e24\u5e74\u524d\u505a\u7684\u4e8b\u60c5\u3002<\/p>\n<\/p>\n<p>\u8fd9\u6837\u505a\u6709\u4e2a\u95ee\u9898\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u6a21\u578b\u7684\u6570\u636e\u662f\u5b8c\u5168\u5206\u5f00\u7684\uff0c\u8bad\u7ec3\u6570\u636e\u6ca1\u6709\u5171\u4eab\uff0c\u6240\u4ee5\u505a\u5728\u7ebf\u5b66\u4e60\u9047\u5230\u5f88\u5927\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u6a21\u578b\u7684\u6570\u636e\u975e\u5e38\u5c11\uff0c\u6ca1\u6cd5\u505a\u5728\u7ebf\u5b66\u4e60\uff0c\u7b2c\u4e8c\u4e2a\u662f\u7b80\u5355\u7684\u7ebf\u6027\u6a21\u578b\uff0c\u76f8\u5bf9\u6765\u8bf4\u6bd4\u8f83\u7b80\u5355\u3002\u6240\u4ee5\u4eca\u5e74\u505a\u7684\u4e8b\u60c5\u662f\u8bf4\u6211\u4eec\u5b9e\u73b0\u8fd9\u79cd\u5728\u7ebf\u7684\u57fa\u4e8e\u6df1\u5ea6\u5b66\u4e60\u7684\u975e\u7ebf\u6027\u6392\u5e8f\u6a21\u578b\u3002\u8fd9\u91cc\u9762\u4e00\u4e2a\u662f\u8bf4\u4eca\u5e74\u52a0\u4e86\u5f88\u591a\u6df1\u5ea6\u5b66\u4e60\u7279\u5f81\uff0c\u5176\u6b21\u6211\u4eec\u4f1a\u628aQuery User\u5f15\u5165\u8fdb\u6765\uff0c\u8ddf\u5546\u54c1\u7684\u7279\u5f81\u505a\u4e00\u4e2a\u62fc\u63a5\uff0c\u7136\u540e\u518d\u53bb\u5b66\u4e60\u3002\u8fd9\u6837\u7684\u8bdd\u5b83\u7684\u597d\u5904\u662f\u8bf4\u6574\u4e2a\u6a21\u578b\u8bad\u7ec3\u6240\u6709\u6837\u672c\u90fd\u4f1a\u8fc7\u7684\uff0c\u800c\u4e0d\u662f\u628a\u8fd9\u4e2a\u6570\u636e\u5206\u7684\u5f88\u7ec6\u3002\u901a\u8fc7\u6df1\u5ea6\u5b66\u4e60\u975e\u7ebf\u6027\u7684\u8868\u8fbe\u80fd\u529b\uff0c\u6211\u4eec\u5c31\u5b9e\u73b0\u4e86\uff0c\u53ef\u4ee5\u8ba4\u4e3a\u662f\u5343\u4eba\u4e07\u9762\u7684\u6392\u5e8f\u6a21\u578b\u3002\u56e0\u4e3a\u8fd9\u4e2aUser\u4e0d\u662f\u7528\u6237\u7684\u72b6\u6001\uff0c\u8ddf\u7528\u6237\u7684\u884c\u4e3a\u5e8f\u5217\u5b9e\u65f6\u53d1\u751f\u53d8\u5316\uff0c\u4f60\u5728\u6dd8\u5b9d\u91cc\u9762\uff0c\u540c\u4e00\u4e2aQuery\uff0c\u4f60\u4e0a\u4e00\u9875\u8ddf\u4e0b\u4e00\u9875\u7684\u6392\u5e8f\u6a21\u578b\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u6211\u4eec\u6839\u636e\u72b6\u6001\u8c03\u6574\u6392\u5e8f\u6a21\u578b\u3002<\/p>\n<\/p>\n<p>\u7136\u540e\u8fd9\u662f\u6211\u4eec\u5728\u505a\u6027\u80fd\u4f18\u5316\u505a\u7684\u4e8b\u60c5\uff0c\u5c31\u662f\u8bf4\u8fd9\u4e2a\u5728\u6392\u5e8f\u7684\u65f6\u5019\uff0c\u6211\u4eec\u56e0\u4e3a\u6bcf\u4e2aQuery\u7ed3\u679c\u6bd4\u8f83\u591a\uff0c\u6240\u4ee5\u4e00\u822c\u7684\u6392\u5e8f\uff0c\u5148\u4e00\u4e2a\u6bd4\u8f83\u7b80\u5355\u7684\u7279\u5f81\uff0c\u5148\u8fc7\u6ee4\u6389\u4e00\u4e9b\u660e\u663e\u4e0d\u559c\u6b22\u7684\u5546\u54c1\uff0c\u5269\u4e0b\u5546\u54c1\u518d\u7ed9\u5230\u76f8\u5bf9\u590d\u6742\u7684\u6a21\u578b\uff0c\u662f\u4e00\u4e2a\u5c42\u6b21\u6392\u5e8f\u7684\u8fc7\u7a0b\u3002\u4e4b\u524d\u6bcf\u5c42\u9700\u8981\u8ba1\u7b97\u591a\u5c11\u4e2a\u5546\u54c1\u662f\u4eba\u5de5\u8bbe\u5b9a\u7684\u7edf\u4e00\u53c2\u6570\uff0c\u4f46\u5b9e\u9645\u4e0a\u5bf9\u7ed3\u679c\u591a\u7684query\u6bcf\u5c42\u6392\u5e8f\u5546\u54c1\u9700\u8981\u591a\uff0c\u800c\u7ed3\u679c\u5c11\u7684query\u9700\u8981\u5c11\u70b9 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Display\u4e3b\u8981\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6838\u5fc3\u601d\u8def\u662f\u6839\u636e\u5df2\u7ecf\u6392\u5e8f\u597d\u7684\u5546\u54c1\u6765\u9884\u6d4b\u4e0b\u4e00\u4e2a\u5546\u54c1\u7684\u5206\u6570\uff0c\u8fd9\u91cc\u6211\u4eec\u662f\u7528LSTM\u5bf9\u5df2\u7ecf\u6392\u597d\u7684\u5546\u54c1\u505a\u8868\u5f81\uff0c\u7528beam search 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