Abstract:

To avoid the problem that users′ diversity needs cannot be precisely obtained or documents provided cannot concern all aspects of the needs in a specific query,a new method was proposed based on the linkparsing feature of the HITS algorithm, in where the possibility was directly calculated according to the diversity of documents in the search result list for a query, and then the result list was reranked based on this value. Experimental results on the TREC′s largescale data collections verified that this method was effective.

Key words:  diversity; HITS; PageRank; authority; Hub