Search on this site

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'