On 1/30/06, Leon Chaddock <[EMAIL PROTECTED]> wrote: > Hi, > Does anyone know if it is possible to show related searches with lucene, for > example if > someone searched for "car insurance" you could bring back the results and > related > searches like these
One possible way is to use the vector space model on the set of relevant documents returned by each query. For example, Relevant documents for the query "car insurance" are docids 1, 2, 4, 9, 10. Relevant documents for the query "automobile insurance" are docids 2, 4, 8, 9, 10. Relevant documents for the query "life insurance" are docids 3, 5, 7, 9. Here, "automobile insurance" will be scored as more similar to "car insurance" than "life insurance" because there is a larger set of overlapping docids. Lucene can be adapted for this purpose by creating a second index that stores all unique queries and their set of relevant docids as Lucene Documents. Instead of indexing text terms, we index docids. Finding queries similiar to the original query, Q, is a simple matter of querying this second index with the set of docids relevent to query Q. Hope this helps. -- Dave Kor, Research Assistant Center for Information Mining and Extraction School of Computing National University of Singapore. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
