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author_ss:"Chang, C.-H."
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theme_ss:"Retrievalalgorithmen"
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theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
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Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998)
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1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm