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Bartell, B.T.; Cottrell, G.W.; Belew, R.K.: Representing documents using an explicit model of their similarities (1995)
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Bartell, B.T.; Cottrell, G.W.; Belew, R.K.: Optimizing similarity using multi-query relevance feedback (1998)
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Belew, R.K.: Finding out about : a cognitive perspective on search engine technology and the WWW (2001)
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