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Ekmekcioglu, F.C.; Robertson, A.M.; Willett, P.: Effectiveness of query expansion in ranked-output document retrieval systems (1992)
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1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm
1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm