Custom Suffix List,
Custom Suffix Default Removal, and
Custom Suffix Min Lengthsettings to create your own custom behavior.
|PLURAL||(above) + presidents president's|
|ANY||(above) + presidential presidency preside presides presiding presided|
|PLURAL||(above) + tights|
|ANY||(above) + tightly tightening tightened tighter tightest|
|PLURAL||(above) + programs program's|
|ANY||(above) + programming programmatic programmed programmer programmable|
We call this morpheme processing, and it is generally smarter than a traditional "stemming" algorithm. It doesn't just rip the end off a word, it actually checks to see if it could be a valid form of the search term. More information is available at http://docs.thunderstone.com/site/texisman/adjusting_linguistic_controls.html .
Notes: Thesaurus terms are also treated in the same manner. Words smaller than 4-5 characters will not be morpheme processed.