An Introduction to Ontology-Based Query Answering with Existential Rules

Marie-Laure Mugnier 1 Michaël Thomazo 2
1 GRAPHIK - Graphs for Inferences on Knowledge
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier, CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : The need for an ontological layer on top of data, associated with advanced reasoning mechanisms able to exploit ontological knowl-edge, has been acknowledged in the database, knowledge representation and Semantic Web communities. We focus here on the ontology-based data querying problem, which consists in querying data while taking on-tological knowledge into account. To tackle this problem, we consider a logical framework based on existential rules, also called Datalog ± . In this course, we introduce fundamental notions on ontology-based query answering with existential rules. We present basic reasoning techniques, explain the relationships with other formalisms such as lightweight de-scription logics, and review decidability results as well as associated al-gorithms. We end with ongoing research and some challenging issues.
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Communication dans un congrès
Manolis Koubarakis; Giorgos Stoilos; Ian Horrocks; Phokion G. Kolaitis; Georg Lausen; Gerhard Weikum; Giorgos B. Stamou. RW: Reasoning Web, Sep 2014, Athens, Greece. Springer, 10th Reasoning Web Summer School, LNCS (8714), pp.245-278, 2014, Reasoning Web. Reasoning on the Web in the Big Data Era. 〈http://rw2014.di.uoa.gr/〉. 〈10.1007/978-3-319-10587-1_6〉
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Marie-Laure Mugnier, Michaël Thomazo. An Introduction to Ontology-Based Query Answering with Existential Rules. Manolis Koubarakis; Giorgos Stoilos; Ian Horrocks; Phokion G. Kolaitis; Georg Lausen; Gerhard Weikum; Giorgos B. Stamou. RW: Reasoning Web, Sep 2014, Athens, Greece. Springer, 10th Reasoning Web Summer School, LNCS (8714), pp.245-278, 2014, Reasoning Web. Reasoning on the Web in the Big Data Era. 〈http://rw2014.di.uoa.gr/〉. 〈10.1007/978-3-319-10587-1_6〉. 〈lirmm-01089990〉

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