Task Thesaurus as a Tool for Modeling of User Information Needs

Abstract

We consider task thesaurus as an element of user model that reflects dynamic aspects of user current work. Such thesaurus is based on domain ontology and contains the subset of it’s concepts that are dealt with user task. Task thesaurus can be generated automatically by analysis of task description or with the help of semantic similarity estimations of ontological concepts. Task thesaurus represents personalized user view on domain and depends on his/her abilities, experience and aims. We describe some examples of task thesaurus usage in intelligent applications for adaptation to user needs.