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Werrmann, J.: Modellierung im Kontext : Ontologie-basiertes Information Retrieval (2011)
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Schott, H.; Schroeder, A.: Crosskonkordanzen von Thesauri und Klassifikationen (2004)
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Na, S.-H.; Kang, I.-S.; Roh, J.-E.; Lee, J.-H.: ¬An empirical study of query expansion and cluster-based retrieval in language modeling approach (2007)
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Crestani, F.; Wu, S.: Testing the cluster hypothesis in distributed information retrieval (2006)
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Kang, I.-S.; Na, S.-H.; Kim, J.; Lee, J.-H.: Cluster-based patent retrieval (2007)
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