Abstract
A classical information retrieval system ranks documents according to distances between texts and a user query. The answer list is often so long that users cannot examine all the documents retrieved whereas some relevant ones are badly ranked and thus never retrieved. To solve this problem, retrieved documents are automatically clustered. We describe an algorithm based on hierarchical and clustering methods. It classifies the set of documents retrieved by any IR-system. This method is evaluated over the TREC-7 corpora and queries. We show that it improves the results of the retrieval by providing users at least one high precision cluster. The impact of the number of clusters and the way to browse them to build a reordered list are examined. Over TREC corpora and queries, we show that the choice of the number of clusters according to the length of queries improves results compared with a prefixed number.
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Bellot, P., El-Bèze, M. (1999). Query Length, Number of Classes and Routes through Clusters: Experiments with a Clustering Method for Information Retrieval. In: Hui, L.C.K., Lee, DL. (eds) Internet Applications. ICSC 1999. Lecture Notes in Computer Science, vol 1749. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-46652-9_19
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DOI: https://doi.org/10.1007/978-3-540-46652-9_19
Publisher Name: Springer, Berlin, Heidelberg
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