文本相关性（二期） about book HOT 4 CLOSED

@luotao1 我想认领该任务。

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有个疑问想明确一下，该任务的目标是训练模型，完成query-url的排序任务么？

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是的，是根据搜索点击数据训练模型，进行query相关性排序。
比如，可以用http://research.microsoft.com/en-us/um/beijing/projects/letor/letor4download.aspx 数据中Supervised ranking任务的数据。（或者任意learning to rank的数据）

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