An Intelligent User Interface oriented to non-expert users

This paper presents the design criteria for an Intelligent User Interface to a search engine of an on-line document data base. The interface is aimed at users that have little or no knowledge of the specific terms and keywords used by experts in the field, and allows an easy navigation without requiring to type any query string. While the user navigates, the Interface infers a model of his/her interests, and activates suitable searches on behalf of the user.