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    Semantic Extensions of the Ephyra QA System for TREC 2007
    13 years 5 months ago
    Semantic Extensions of the Ephyra QA System for TREC 2007
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    We describe recent extensions to the Ephyra question answering (QA) system and their evaluation in the TREC 2007 QA track. Existing syntactic answer extraction approaches for fact...
    Nico Schlaefer, Jeongwoo Ko, Justin Betteridge, Ma...
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