Stemming and Thesaurus - Endeca Features

Stemming  - The stemming dictionary is based on the common English dictionary, and doesn’t pluralize proper nouns, brand names, etc.  In order to ‘Stem’ a plural of a word that doesn’t occur commonly, a two way thesaurus entry should be made in the Workbench or update the stemming dictionary.

      Stemming  dictionary found at MDEX level /opt/app/endeca//MDEX/6.5.1/conf/stemming

    Thesaurus  -  The thesaurus is intended for specifying concept-level mappings between words and phrases.

There are two options available when configuring thesaurus entries:

1)      One-Way - This mapping technique specifies only one direction of equivalence. 

                 Ex: Assume you define a one-way mapping from the phrase “red wine” to the phrases “merlot” and “cabernet sauvignon”.  This one-way mapping ensures that a search for “red wine” also returns any matches containing the more specific terms “merlot” or “cabernet sauvignon.”

2)      Two-Way - This technique means that the direction of a word mapping is equivalent between the words.

                  Ex: a Two-way mapping between “laptop,” “desktop,” and “notebook” means that a search for one of these words will always return all results matching any of these words

Note: Only one global thesaurus is supported for an Endeca data domain. In other words, language-specific thesauruses are not supported (for example, one thesaurus for English, a second for French, and so on).