Thesaurus

A thesaurus search looks for synonyms based on the English language. A thesaurus search is broad and flexible and good for general searches where synonyms of general speech words should be used as criteria.

For example, when searches for records with references to a home or house, a thesaurus search could find records containing house, home, domicile, dwelling, abode, habitation, villa, etc..., with only a single criteria keyword.

Thesaurus searches are good for broad textual searches, but are not appropriate for more specific situations. A thesaurus will not contain most proper names, brand names, abbreviations and jargon. Use Managed Synonyms for these scenarios.

Filtering the Thesaurus

The thesaurus used in Omnidex Text contains a large number of words in common English usage. This includes words of various dialects, words found more commonly in British English or Canadian English, idiomatic phrases and common slang. The latter category includes common and uncommon swear words as well as other scatological language.

Some applications may require unfiltered searches while others might require the filtering of such words, insuring that these words do not appear as a result of a synonym search, misspelling search or suggestion.

A file named filter.exc, located in $OMNIDEX_HOME/config/english/thesaurus, contains some of the most common, objectionable words that are filtered by default. You can edit this file, adding or removing words, to suit your application needs. The contents are structured as one word or phrase per line with spaces represented by underscores.

If upgrading Omnidex to a new version, be sure to make a copy of this file before installing the new version, to avoid losing your changes when the file is overwritten.

WordNet® License

The following license agreement is found on the WordNet website (http://www.cogsci.princeton.edu/~wn/license.shtml):

Commercial Use of WordNet

WordNet® is unencumbered, and may be used in commercial applications in accordance with the following license agreement. An attorney representing the commercial interest should review this WordNet license with respect to the intended use.

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