document: Efficient diversification of search results using query logs We study the problem of diversifying search results by exploiting the knowledge mined from query logs . Our proposal exploits the presence of different `` specializations '' of queries in query logs to detect the submission of ambiguous\/faceted queries , and manage them by diversifying the search results returned in order to cover the different possible interpretations of the query . We present an original formulation of the results diversification problem in terms of an objective function to be maximized that admits the finding of an optimal solution in linear time .
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