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author_ss:"Ruthven, I."
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language_ss:"e"
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theme_ss:"Retrievalalgorithmen"
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year_i:[1990 TO 2000}
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Ruthven, I.; Lalmas, M.: Selective relevance feedback using term characteristics (1999)
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Lalmas, M.; Ruthven, I.: Representing and retrieving structured documents using the Dempster-Shafer theory of evidence : modelling and evaluation (1998)
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