A fundamental problem for Information Retrieval (IR) is the "word mismatch".

“词的不匹配”是全文信息检索中存在的一个基本问题。

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User model plays a key role in personal IR.

用户模型在个性化信息检索中起着关键作用。

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EX; Ir took me a while to lose weight. .

我花了一段时间减肥。

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EX; Ir took me a while to lose weight. .

我花了一段时间减肥。

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