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Natural-language queries
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This is
the AskJeeves model on steroids
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Applied
more narrowly in certain fields, e.g. finance
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and
investing: http://www.iphrase.com
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Understand
the user � keywords, phrases, sentences,
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and
extended prose including e-mails and IM sessions.
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But
these can be incomplete, obscure, or �dirty� (e.g.,
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misspellings)
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