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TREC: experiment and evaluation in information retrieval (2005)
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Billhardt, H.; Borrajo, D.; Maojo, V.: ¬A context vector model for information retrieval (2002)
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Liddy, E.D.; Paik, W.; McKenna, M.; Yu, E.S.: ¬A natural language text retrieval system with relevance feedback (1995)
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Vilares, J.; Alonso, M.A.; Vilares, M.: Extraction of complex index terms in non-English IR : a shallow parsing based approach (2008)
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