| 摘要 |
A search and retrieval system pre-processes an input query to map a contextual semantic interpretation, expressed by the user of the input query, to a boolean logic interpretation for processing in the search and retrieval system. A knowledge base comprises a plurality of categories, such that subsets of the categories are designated to one of a plurality of groups. A lexicon stores a plurality of terms including definitional characteristics for the terms. To pre-process the query, the search and retrieval system receives an input query comprising a plurality of terms, and processes the terms by referencing the lexicon to identify value terms that comprise a content carrying capacity. The knowledge base is referenced to identify a group for each value term. A processed input query is generated by inserting an AND logical connector between two value terms if the two respective value terms are in different groups and by inserting an OR logical connector between two value terms if the two respective value terms are in the same group. The lexicon is also used to identify phrases as well as connective terms for conversion to a boolean operator.
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