| query expansion Adding to a user's search. Query expansion is the process of a adding to a user's . The intent is to to improve and/or . The additional terms may be taken from a . For example a search for "car" may be expanded to: car cars auto auto automobile automobiles. The additional terms may also be taken from documents that the user has specified as being relevant; this is the basis for the "more like this" feature of some search engines. The extra terms can have positive or negative weights. (1999-08-27) |
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