Ontological CP-Nets

Uncertainty Reasoning for the Semantic Web III - 2014
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Representing and reasoning about preferences is a key issue in many real-world scenarios in which personalized access to information is required. Many approaches have been proposed and studied in the literature that allow a system to work with qualitative or quantitative preferences; among the qualitative models, one of the most prominent are CP-nets. Their clear graphical structure unifies an easy representation of user preferences with good computational properties when computing the best outcome. In this paper, we show how to reason with CP-nets when the attributes modeling the knowledge domain are structured via an underlying domain ontology. We show how the computation of all undominated feasible outcomes of an ontological CP-net can be reduced to the solution of a constraint satisfaction problem, and study the computational complexity of the basic reasoning problems in ontological CP-nets.

BibTex references

author = {Tommaso {Di Noia} and Thomas Lukasiewicz and Maria Vanina Martinez and Gerardo Ignacio {Simari } and Oana Tifrea\−Marciuska},
title = "Ontological CP-Nets",
booktitle = "Uncertainty Reasoning for the Semantic Web III",
series = "Lecture Notes in Artificial Intelligence",
year = "2014",
publisher = "Springer",
url = "http://www-ictserv.poliba.it/publications/2014/DLM

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SisInf Lab - Information Systems Laboratory

Research group of Politecnico di Bari
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