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Towards a Cooperative Query Language for Semantic Web Database Queries
Stéphane Jean, Allel Hadjali, and Ammar Mars
LIAS/ISAE-ENSMA, University of Poitiers, 1, Avenue Clement Ader, 86960, Futuroscope Cedex, Francestephane.jean@ensma.fr
allel.hadjali@ensma.fr
ammar.mars@ensma.fr
Abstract. In this paper, we address the problem of cooperative query answering on Semantic Web Databases (
) in order to overcome the problem of empty or unsatisfactory answers. While most existing approaches propose an automatic relaxation process based on RDF-S entailment, our proposition consists in endowing 
query languages with relaxation and approximation operators. The main interest of this approach is that the relaxation process can be finely controlled by the user or implicitly by the system. Experiments on real data are conducted to evaluate (1) the scalability of the proposed operators and (2) the interest of the similarity measure defined to rank the alternative answers.
LNCS 8185, p. 519 ff.
lncs@springer.com
© Springer-Verlag Berlin Heidelberg 2013