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Gyseghem, N. van; Caluwe, R. de: Imprecision and uncertainty in the UFO database model (1998)
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Fuzziness in database management systems (1995)
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Klir, G.I.; Wierman, M.J.: Uncertainty-based information : Elements of generalized information theory (1998)
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Costa Carvalho, A. da; Rossi, C.; Moura, E.S. de; Silva, A.S. da; Fernandes, D.: LePrEF: Learn to precompute evidence fusion for efficient query evaluation (2012)
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Wu, S.; McClean, S.I.: Improving high accuracy retrieval by eliminating the uneven correlation effect in data fusion (2006)
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