Thunderstone Search Appliance Manual

Using Word Forms

The Word forms options give you control over how many variations of your query terms will be sought in your search.

Exact match:: Only exact matches will be allowed. (the default)
Plurals & possessives:: Plural and possessive forms will be found. (s, es, 's)
Any word forms:: As many word forms as can be derived will be located.
Custom:: Uses the Custom Suffix List, Custom Suffix Default Removal, and Custom Suffix Min Length settings to create your own custom behavior.


Word	president

EXACT	president
PLURAL	(above) + presidents president's
ANY	(above) + presidential presidency preside presides presiding presided

Word	tight

EXACT	tight
PLURAL	(above) + tights
ANY	(above) + tightly tightening tightened tighter tightest

Word	program

EXACT	program
PLURAL	(above) + programs program's
ANY	(above) + programming programmatic programmed programmer programmable

Table 6.4: Word Form Examples

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/link_ling.html .

Notes: Thesaurus terms are also treated in the same manner. Words smaller than 4-5 characters will not be morpheme processed.