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pro vyhledávání: '"Stefanoni, Giorgio"'
The volume of news content has increased significantly in recent years and systems to process and deliver this information in an automated fashion at scale are becoming increasingly prevalent. One critical component that is required in such systems i
Externí odkaz:
http://arxiv.org/abs/2003.07461
Autor:
Voskarides, Nikos, Meij, Edgar, Reinanda, Ridho, Khaitan, Abhinav, Osborne, Miles, Stefanoni, Giorgio, Kambadur, Prabhanjan, de Rijke, Maarten
Knowledge graphs (KGs) model facts about the world, they consist of nodes (entities such as companies and people) that are connected by edges (relations such as founderOf). Facts encoded in KGs are frequently used by search applications to augment re
Externí odkaz:
http://arxiv.org/abs/1805.02393
Estimating the cardinality (i.e., the number of answers) of conjunctive queries is particularly difficult in RDF systems: queries over RDF data are navigational and thus tend to involve many joins. We present a new, principled cardinality estimation
Externí odkaz:
http://arxiv.org/abs/1801.09619
Autor:
Stefanoni, Giorgio
OWL 2 EL is a popular ontology language that is based on the EL family of description logics and supports regular role inclusions,axioms that can capture compositional properties of roles such as role transitivity and reflexivity. In this thesis, we
Externí odkaz:
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.711814
Autor:
Stefanoni, Giorgio, Motik, Boris
Answering conjunctive queries (CQs) over $\mathcal{EL}$ knowledge bases (KBs) with complex role inclusions is PSPACE-hard and in PSPACE in certain cases; however, if complex role inclusions are restricted to role transitivity, the tight upper complex
Externí odkaz:
http://arxiv.org/abs/1411.2516
Publikováno v:
Journal Of Artificial Intelligence Research, Volume 48, pages 635-669, 2013
In order to meet usability requirements, most logic-based applications provide explanation facilities for reasoning services. This holds also for Description Logics, where research has focused on the explanation of both TBox reasoning and, more recen
Externí odkaz:
http://arxiv.org/abs/1402.0575
So-called combined approaches answer a conjunctive query over a description logic ontology in three steps: first, they materialise certain consequences of the ontology and the data; second, they evaluate the query over the data; and third, they filte
Externí odkaz:
http://arxiv.org/abs/1303.7430
Akademický článek
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Akademický článek
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Publikováno v:
Proceedings of the 2010 ACM Symposium: Applied Computing; 3/22/2010, p1388-1395, 8p
