EL description logics with aggregation of user preference concepts
Peter Vojtáš · 2007
We consider querying containing several vague concepts of user's preferences (with preference scale T ), which is quite typical in semantic web. These particular preferences need to be combined to get an overall ordering of results. We propose [email protected] --a description logic allowing existential restrictions, crisp roles, T -fuzzy concepts and T -fuzzy combining functions @. We discuss problems of consistency, subsumption and the instance problem. We show some results on polynomial complexity of this problem. We conclude with a sketch of an embedding of [email protected] into a sort of classical EL logic with concrete domain.