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magigo/广告检索.md

Created February 5, 2015 04:15
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广告检索.md
  1. 布尔表达式搜索
  2. 长Query情况下的相关性检索 切掉理论上不再需要考虑的文档，当相关性函数为线性时，存在有效的剪枝算法 WAND检索算法
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