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Fan, W.; Fox, E.A.; Pathak, P.; Wu, H.: ¬The effects of fitness functions an genetic programming-based ranking discovery for Web search (2004)
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Daniowicz, C.; Baliski, J.: Document ranking based upon Markov chains (2001)
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Srinivasan, P.: Query expansion and MEDLINE (1996)
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Pfeifer, U.; Pennekamp, S.: Incremental processing of vague queries in interactive retrieval systems (1997)
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