Query Language

The text search engine allows queries to be formed from arbitrary Boolean expressions containing the keywords AND, OR, and NOT, and grouped with parentheses. For example:

information retrieval - finds documents containing 'information' or 'retrieval'

information or retrieval - same as above

information and retrieval - finds documents containing both 'information' and 'retrieval'

information not retrieval - finds documents containing 'information' but not 'retrieval'

(information not retrieval) and WAIS - finds documents containing 'WAIS', plus 'information' but not 'retrieval'

web* - finds documents containing words starting with 'web'

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