You can declare single or multiple terms to be synonyms. They are mutually expanded in queries.
The expansion file contains one group of synonyms per line. The number of synonyms per group is virtually unlimited.1
Note: Keep in mind that all synonyms are added to the query. This might hit query stack length limits.
Synonyms are separated by = equal signs.
An expression can occur in multiple synonym groups, with this exception:
Each expression should only occur once as the first synomym. If the first synonym of two lines is the same, the second occurrence is ignored. Then a message is shown in the index engine log file (distributedMindServer.*.log).
Optionally, you can specify a base form as the first term in the list followed by the tilde (~) and the list of synonyms. The base form is only used for display in the list of characteristic words (only available in Decisiv Search ).
Example:
plutonium=pu=pu239 car=auto=horseless carriage=automobile
The query
auto construction is expanded to
(auto OR car OR horseless carriage OR automobile) AND
construction
Example:
Nuclear~plutonium=pu=pu239
Car~auto=horseless carriage=automobile
In the characteristic words, only Car will appear, but when you click this term, documents with the other terms will be found, too.