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theme_ss:"OPAC"
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theme_ss:"Retrievalalgorithmen"
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theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
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Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992)
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Beaulieu, M.; Jones, S.: Interactive searching and interface issues in the Okapi best match probabilistic retrieval system (1998)
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