The optimum clustering framework: implementing the cluster hypothesis |
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| Authors: | Email author" target="_blank">Norbert?FuhrEmail author Marc?Lechtenfeld Benno?Stein Tim?Gollub |
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| Institution: | 1.University of Duisburg-Essen,Duisburg,Germany;2.Bauhaus-Universit?t Weimar,Weimar,Germany |
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| Abstract: | Document clustering offers the potential of supporting users in interactive retrieval, especially when users have problems
in specifying their information need precisely. In this paper, we present a theoretic foundation for optimum document clustering.
Key idea is to base cluster analysis and evalutation on a set of queries, by defining documents as being similar if they are
relevant to the same queries. Three components are essential within our optimum clustering framework, OCF: (1) a set of queries,
(2) a probabilistic retrieval method, and (3) a document similarity metric. After introducing an appropriate validity measure,
we define optimum clustering with respect to the estimates of the relevance probability for the query-document pairs under
consideration. Moreover, we show that well-known clustering methods are implicitly based on the three components, but that
they use heuristic design decisions for some of them. We argue that with our framework more targeted research for developing
better document clustering methods becomes possible. Experimental results demonstrate the potential of our considerations. |
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