(WAIS, Oracle, PLS, Verity)
A set of methods for enlarging the search domain of a given query to go beyond simple word frequencies. Proximities are established between the words in the query and other words, based on spelling, grammar, meaning, context, etc.
See also ``advisors'', ``stemming'', ``fuzzy search'' ``query-by-theme'', ``concept searching'' and ``topic agents''.