A unifying framework for flexible information access in taxonomy-based sources

Abstract

A taxonomy-based source consists of a taxonomy and a database storing objects that are indexed in terms of the taxonomy. Forthis kind of sources, we describe a flexible interaction scheme that allows users to retrieve the objects of interest without having to be familiarwith the terms of the taxonomy or with the supported query language. Specifically we describe an interaction manager whose functionality unifiesseveral well-known interaction schemes including query by example, answer enlargement/reduction, query relaxation/restriction, index relaxation/contraction, feedback and adaptation mechanisms.