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Ruthven, T.; Lalmas, M.; Rijsbergen, K.van: Incorporating user research behavior into relevance feedback (2003)
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Lavrenko, V.: ¬A generative theory of relevance (2009)
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Li, M.; Li, H.; Zhou, Z.-H.: Semi-supervised document retrieval (2009)
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Schaefer, A.; Jordan, M.; Klas, C.-P.; Fuhr, N.: Active support for query formulation in virtual digital libraries : a case study with DAFFODIL (2005)
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