Managing Query Pipeline Thesaurus

The thesaurus of an Organization is a list of equivalent words used to transparently add keywords to the query entered by a user before it is sent to the index (see About Thesaurus and Thesaurus Leading Practices).

The list of thesaurus rules for the index of a Coveo™ Organization is empty by default, but you can add thesaurus rules. Thesaurus rules are defined independently for each pipeline.

When a query pipeline contains Coveo Machine Learning (Coveo ML) models, avoid or minimize the use of thesaurus rules. Thesaurus rules are static and can thus negatively impact Coveo ML models which follow trends. Therefore, create thesaurus rules with caution.