US Patent 8429184 Generation of refinement terms for search queries

A computer-implemented method includes receiving from a user a first search query consisting of one or more first query terms, and receiving from the user an indication of a desired level of personalization of refinement options for the first search query. Responsively to the first search query, a set of one or more refinement terms is generated at least in part responsively to the indication, and is presented to the user. Responsively to a selection of at least one of the refinement terms by the user, the selected at least one refinement term is added to the first search query to generate a second search query. Search results are presented to the user responsively to the second search query.