Search Tips

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

For example:

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

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

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

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

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

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

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 Last updated March 10, 2003.