| 摘要 |
A computer-implemented method is provided, which includes receiving a plurality of first search queries, each of which comprises one or more first query terms. At least one association graph is constructed that includes at least a portion of the first query terms as vertices. A second search query is received from a user, which comprises a plurality of second query terms. One or more suggested replacement terms for one or more of the second query terms are identified, using the at least one association graph. The suggested replacement terms are presented to the user. Responsively to a selection of one of the suggested replacement terms by the user, the selected suggested replacement term is substituted for the corresponding one of the second query terms, to generate a refined search query. Search results are presented to the user responsively to the refined search query. Other embodiments are also described.
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