Query terms, unless they are delimited with quotation marks to be treated as exact phrases, are expanded by the MDEX Engine using stemming.
The expansion for stemming
applies even to terms that are the result of thesaurus expansion. A stemmed
query term is an
OR
expression of its word forms.
For example, if the query
pentium laptop
was thesaurus-expanded to:
(pentium OR intel) AND (laptop OR notebook)
it will be stemmed to:
(pentium OR intel) AND (laptop OR laptops OR notebook OR notebooks)
assuming that only the improper nouns have plurals in the word form dictionary.