{"id":1896,"date":"2016-06-17T18:37:50","date_gmt":"2016-06-17T10:37:50","guid":{"rendered":"http:\/\/systemsci.org\/jinshanw\/?p=1896"},"modified":"2017-11-03T14:27:24","modified_gmt":"2017-11-03T06:27:24","slug":"this-is-science","status":"publish","type":"post","link":"https:\/\/www.systemsci.org\/jinshanw\/2016\/06\/17\/this-is-science\/","title":{"rendered":"\u8fd9\u5c31\u662f\u79d1\u5b66\u554a"},"content":{"rendered":"

\u6700\u8fd1\u5728\u548c\u5c0f\u52c7\u8fd8\u6709\u6c6a\u660e\u4ed6\u4eec\u5728\u5408\u4f5c\u4e00\u4e2a\u4ea4\u901a\u7f51\u7edc\u91cd\u8981\u9053\u8def\u548c\u8282\u70b9\u7684\u5ea6\u91cf\u7684\u9879\u76ee\u3002\u6211\u4eec\u9700\u8981\u63d0\u4f9b\u4e00\u4e2a\u53bb\u6389\u4e00\u6bb5\u9053\u8def\u6216\u8005\u4e00\u4e2a\u8282\u70b9\u4ee5\u540e\u7684\u67d0\u79cd\u635f\u5931\u7684\u5ea6\u91cf\u3002\u4ed6\u4eec\u62ff\u5230\u8fd9\u4e2a\u5ea6\u91cf\u4ee5\u540e\u4f1a\u7ed3\u5408\u5730\u8d28\u6216\u8005\u5176\u4ed6\u707e\u5bb3\u53d1\u751f\u7684\u51e0\u7387\uff0c\u6765\u8861\u91cf\u98ce\u9669\u3002<\/p>\n

\u5f53\u7136\uff0c\u76f4\u63a5\u7684\u5ea6\u91cf\uff0c\u5c31\u662f\u8003\u8651\u6bcf\u4e00\u6bb5\u9053\u8def\u6216\u8005\u8282\u70b9\u76ee\u524d\u7684\u6d41\u91cf\u3002\u4e0d\u8fc7\uff0c\u7531\u4e8e\u5176\u4e0d\u518d\u80fd\u591f\u627f\u62c5\u8fd9\u4e9b\u6d41\u91cf\uff0c\u5176\u4ed6\u7684\u8282\u70b9\u548c\u9053\u8def\u4e0a\u7684\u6d41\u91cf\u8fd8\u9700\u8981\u505a\u76f8\u5e94\u7684\u8c03\u6574\uff0c\u56e0\u6b64\uff0c\u4e0d\u80fd\u4ec5\u4ec5\u8003\u8651\u76f4\u63a5\u6d41\u91cf\u3002\u90a3\u4e48\uff0c\u5982\u4f55\u6765\u5ea6\u91cf\u8fd9\u4e2a\u76f4\u63a5\u52a0\u4e0a\u95f4\u63a5\u7684\u6d41\u91cf\u6548\u76ca\u5462\uff1f<\/p>\n

\u6700\u5173\u952e\u7684\u5c31\u662f\u8fd9\u6837\u7684\u6d41\u91cf\u635f\u5931\u4f1a\u91cd\u5206\u914d\u6216\u8005\u8bf4\u4f20\u64ad\u3002\u8fd9\u662f\u8ba8\u8bba\u8fd9\u4e2a\u95ee\u9898\u7684\u7b2c\u4e00\u4e2a\u5173\u952e\u70b9\uff1a\u4f20\u64ad\uff0c\u6216\u8005\u8bf4\u76f4\u63a5\u5230\u95f4\u63a5\u3002<\/p>\n

\u7b2c\u4e8c\u4e2a\u601d\u8def\u4e0a\u7684\u5173\u952e\u70b9\u662f\u5047\u60f3\u5730\u53bb\u6389\u4e00\u4e2a\uff08\u6216\u8005\u591a\u4e2a\uff09\u5355\u5143\u7684\u601d\u60f3\u2014\u2014Hypothetical Extraction Method (HEM)\u3002<\/p>\n

\u6709\u4e86\u8fd9\u4e24\u4e2a\u601d\u60f3\u548c\u770b\u95ee\u9898\u7684\u89d2\u5ea6\uff0c\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u5982\u4e0b\u5177\u4f53\u7684\u7b97\u6cd5\uff1a<\/p>\n

    \n
  1. \u7528\u6700\u77ed\u8ddd\u79bb\u91cd\u5206\u914d\uff0c\u7ef4\u6301\u5916\u754c\u5bf9\u7cfb\u7edf\u7684\u603b\u9700\u6c42\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u5bf9\u6bd4\u5404\u4e2a\u8def\u6bb5\u548c\u8282\u70b9\u7684\u65b0\u6d41\u91cf\u548c\u65e7\u6d41\u91cf\u3002\n
  2. \u7528PageRank\u7b97\u6cd5\u6765\u770b\u770b\uff0c\u53bb\u6389\u8def\u6bb5\u6216\u8005\u9876\u70b9\u4e4b\u540e\uff0c\u5bf9\u6bd4PageRank\u77e9\u9635\u7684\u672c\u5f81\u77e2\u91cf\u3002\u8fd9\u6837\u505a\u6709\u95f4\u63a5\u6548\u76ca\uff0c\u4f46\u662f\uff0c\u610f\u4e49\u4e0d\u660e\u786e\u3002\n
  3. \u7528\u6295\u5165\u4ea7\u51fa\u5206\u6790\u52a0\u4e0aHEM\u3002\u8fd9\u4e48\u591a\u65b9\u6cd5\uff0c\u7528\u54ea\u4e00\u4e2a\u5462\uff1f\n
      \n
    1. \u4f20\u7edf\u6295\u5165\u4ea7\u51fa+HEM\u3002\u6570\u636e\u672c\u8eab\u53ea\u6709\u9053\u8def\u7cfb\u7edf\u548c\u6d41\u91cf\uff0c\u6ca1\u6709\u5916\u754c\u3002\u8fd9\u4e2a\u7b80\u5355\uff0c\u628a\u6bcf\u4e2a\u8282\u70b9\u7684\u603b\u8f93\u51fa\u770b\u505a\u4e00\u4e2a\u53eb\u505a\u201c\u793e\u4f1a\u201d\u7684\u5916\u754c\u4f20\u64ad\u8fc7\u6765\u7684\u6d41\u91cf\uff0c\u628a\u6bcf\u4e2a\u8282\u70b9\u7684\u603b\u63a5\u6536\u5230\u7684\u6295\u5165\u770b\u505a\u4e00\u4e2a\u53eb\u505a\u201c\u793e\u4f1a\u201d\u7684\u5916\u754c\u4ece\u7cfb\u7edf\u91cc\u9762\u53d6\u8d70\u7684\u6d41\u91cf\u3002\u56e0\u6b64\uff0c\u8fd9\u4e2aHEM\u63cf\u8ff0\u7684\u662f\u5728\u5916\u754c\u548c\u7cfb\u7edf\u7684\u5173\u7cfb\u4e0d\u53d1\u751f\u6539\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u53bb\u6389\u4e00\u4e2a\u8282\u70b9\u6216\u8005\u4e00\u6bb5\u9053\u8def\uff0c\u7cfb\u7edf\u7684\u5e94\u5bf9\u3002\n
    2. \u76ee\u6807\u5916\u754cHEM\u3002\u6309\u7167
      \n \\begin{align}
      \n X = \\left(1-F^{\\left(-k\\right)}\\right)Y^{\\left(k\\right)},
      \n \\end{align}
      \n\u5f53\\(Y^{\\left(k\\right)} = x^{k}_{j}\\)\u7684\u65f6\u5019\uff0c\u8ba1\u7b97\u51fa\u6765\u7684\\(X\\)\u5c31\u662f\\(x^{k}_{j}\\)\u5728\u7cfb\u7edf\u91cc\u9762\u4f20\u64ad\u7684\u6548\u679c\u3002\u4e8e\u662f\uff0c\\(\\sum_{ij}\\left(1-F^{\\left(-k\\right)}\\right)_{ij}x^{k}_{j}\\)\u5c31\u4f53\u73b0\u4e86\\(x^{k}_{j}\\)\u7684\u4e58\u6570\u6548\u5e94\u3002\u4e8e\u662f\uff0c\u6b63\u597d\u5c31\u80fd\u591f\u7528\u6765\u5ea6\u91cf\u8def\u6bb5\\(kj\\)\u7684\u91cd\u8981\u6027\u3002<\/p>\n
    3. \u672c\u5f81\u5411\u91cfHEM\u3002\u4e00\u4e2a\u6295\u5165\u4ea7\u51fa\u77e9\u9635\u7684\u6700\u5927\u672c\u5f81\u503c\u5bf9\u5e94\u7684\u672c\u5f81\u5411\u91cf\u4ee3\u8868\u4e86\u8fd9\u4e2a\u751f\u4ea7\u7cfb\u7edf\u7684\u6700\u4f18\u6295\u5165\u7ed3\u6784\u2014\u2014\u6bcf\u4e00\u4e2a\u90e8\u95e8\u6700\u597d\u5c31\u9700\u6c42\u8fd9\u4e48\u591a\u6216\u8005\u4f9b\u7ed9\u8fd9\u4e48\u591a\u3002\u5728\u4ea4\u901a\u95ee\u9898\u91cc\u9762\uff0c\u8fd9\u5c31\u4ee3\u8868\u6700\u597d\u6bcf\u4e00\u4e2a\u8282\u70b9\u4e0a\u7684\u603b\u8fdb\u6216\u8005\u51fa\u7684\u5ba2\u6d41\u7684\u6700\u6709\u914d\u6bd4\u3002\u5f53\u7136\uff0c\u5b9e\u9645\u5ba2\u6d41\u7684\u7ed3\u6784\u4e0d\u4e00\u5b9a\u5c31\u662f\u8fd9\u4e2a\u6700\u6709\u5ba2\u6d41\u7684\u7ed3\u6784\u3002\u4e8e\u662f\uff0c\u8fd9\u91cc\u76f8\u5f53\u4e8e\uff0c\u4ec5\u4ec5\u4ece\u9053\u8def\u7ed3\u6784\u8fd8\u6709\u76ee\u524d\u7684\u5ba2\u6d41\u5206\u914d\u65b9\u5f0f\u6765\u8003\u8651\uff0c\u53bb\u6389\u4e00\u4e2a\u8282\u70b9\u6216\u8005\u4e00\u6bb5\u9053\u8def\u524d\u540e\uff0c\u8fd9\u4e2a\u6700\u4f18\u914d\u6bd4\u7684\u53d8\u5316\u3002\n <\/ol>\n<\/ol>\n

      \u9664\u4e86\u63cf\u8ff0\u5355\u4e00\u8def\u6bb5\u6216\u8005\u5355\u4e00\u8282\u70b9\u7684\u5f71\u54cd\u529b\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u8003\u8651\u540c\u65f6\u53bb\u6389\u4e24\u4e2a\u8def\u6bb5\u6216\u8005\u8282\u70b9\u7684\u5f71\u54cd\u529b\u7684\u95ee\u9898\uff0c\u4ee5\u53ca\u8fd9\u6837\u7684\u5f71\u54cd\u529b\u548c\u4e24\u8005\u5206\u5f00\u53bb\u6389\u7684\u5f71\u54cd\u529b\u4e4b\u548c\u7684\u5bf9\u6bd4\u3002\u5f88\u6709\u53ef\u80fd\uff0c\u6211\u4eec\u80fd\u591f\u770b\u5230\u5e72\u6d89\u6548\u76ca\u2014\u2014\u4e24\u8005\u4e4b\u548c\u4e0d\u7b49\u4e8e\u540c\u65f6\u53bb\u6389\u4e24\u8005\u7684\u6548\u76ca\u3002\u66f4\u8fdb\u4e00\u6b65\uff0c\u8fd9\u6837\u7684\u5e72\u6d89\u6548\u76ca\uff0c\u662f\u4e0d\u80fd\u901a\u8fc7\u4ec5\u4ec5\u8003\u5bdf\u76f4\u63a5\u6d41\u91cf\u6765\u53cd\u5e94\u7684\uff0c\u662f\u6211\u4eec\u8fd9\u4e2a\u65b9\u6cd5\u7279\u6709\u7684\u3002<\/p>\n

      \u80fd\u591f\u627e\u5230\u4e00\u4e2a\u95ee\u9898\uff0c\u540c\u65f6\u4e09\u79cd\u65b9\u6cd5\u90fd\u53ef\u4ee5\u81ea\u7136\u5730\u7528\u4e0a\uff0c\u4e5f\u662f\u4e0d\u5bb9\u6613\u7684\u3002\u8fd9\u4e09\u4e2a\u8ba1\u7b97\u5206\u6790\u5206\u522b\u53cd\u5e94\u4e86\u9053\u8def\u548c\u8282\u70b9\u4e0d\u540c\u610f\u4e49\u4e0a\u7684\u91cd\u8981\u6027\u3002<\/p>\n

      \u9664\u4e86\u8fd9\u4e2a\u5177\u4f53\u5de5\u4f5c\uff0c\u901a\u8fc7\u8fd9\u4e2a\u5de5\u4f5c\uff0c\u6211\u4eec\u8fd8\u53d1\u73b0\uff1a<\/p>\n

        \n
      1. \u4f20\u64ad\u5f88\u91cd\u8981(PageRank\u6216\u8005\u6295\u5165\u4ea7\u51fa\u6216\u8005\u66f4\u4e00\u822c\u7684\u6d41\u5e73\u8861\u5206\u6790)\n
      2. \u53bb\u6389\u4e00\u4e2a\u70b9\u6216\u8005\u8fb9\u6765\u8ba8\u8bba\u91cd\u8981\u6027\u6709\u610f\u4e49\n
      3. \u53bb\u6389\u4e24\u4e2a\u70b9\u6216\u8005\u8fb9\u53ef\u4ee5\u53cd\u6620\u66f4\u6df1\u523b\u7684\u5e72\u6d89\u6548\u76ca\u3002\n<\/ol>\n

        \u8fd9\u4e9b\u662f\u5177\u6709\u4e00\u822c\u610f\u4e49\u7684\u3002\u8981\u628a\u5b83\u4eec\u5728\u5404\u79cd\u7cfb\u7edf\u91cc\u9762\u5b9e\u73b0\uff0c\u6765\u89e3\u51b3\u5177\u4f53\u7cfb\u7edf\u7684\u95ee\u9898\u3002\u4ece\u5177\u4f53\u95ee\u9898\u5230\u4e00\u822c\u65b9\u6cd5\uff0c\u518d\u5230\u66f4\u4e00\u822c\u7684\u89c6\u89d2\u6216\u8005\u601d\u60f3\uff0c\u7136\u540e\u56de\u5230\u66f4\u591a\u65b9\u6cd5\uff0c\u66f4\u591a\u5177\u4f53\u7cfb\u7edf\u3002\u8fd9\u5c31\u662f\u79d1\u5b66\u554a\u3002<\/p>\n

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