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Automatic subject lookup (1993)
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Pritchard-Schoch, T.: Comparing natural language retrieval : Win & Freestyle (1995)
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Yoon, J.W.; Chung, E.K.: Understanding image needs in daily life by analyzing questions in a social Q&A site (2011)
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Zenz, G.; Zhou, X.; Minack, E.; Siberski, W.; Nejdl, W.: Interactive query construction for keyword search on the Semantic Web (2012)
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Hoenkamp, E.; Bruza, P.D.; Song, D.; Huang, Q.: ¬An effective approach to verbose queries using a limited dependencies language model (2009)
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