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dc.contributor.author
Fazzinga, Bettina
dc.contributor.author
Lukasiewicz, Thomas
dc.contributor.author
Martinez, Maria Vanina

dc.contributor.author
Simari, Gerardo

dc.contributor.author
Tifrea Marciuska, Oana
dc.date.available
2019-12-27T18:25:51Z
dc.date.issued
2018-02
dc.identifier.citation
Fazzinga, Bettina; Lukasiewicz, Thomas; Martinez, Maria Vanina; Simari, Gerardo; Tifrea Marciuska, Oana; Ontological query answering under many-valued group preferences in Datalog+/–; Elsevier Science Inc; International Journal Of Approximate Reasoning; 93; 2-2018; 354-371
dc.identifier.issn
0888-613X
dc.identifier.uri
http://hdl.handle.net/11336/93131
dc.description.abstract
The Web has recently been changing more and more to what is called the Social Semantic Web. As a consequence, the ranking of search results no longer depends solely on the structure of the interconnections among Web pages. In this paper, we argue that such rankings can be based on user preferences from the Social Web and on ontological background knowledge from the Semantic Web. We propose an approach to top-k query answering under user preferences in Datalog+/– ontologies, where the queries are unions of conjunctive queries with safe negation, and the preferences are defined via numerical values. To this end, we also generalize the previous RankJoin algorithm to our framework. Furthermore, we explore the generalization to the preferences of a group of users. Finally, we provide experimental results on the performance and quality of our algorithms.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Inc

dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DATALOG+/-
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EXISTENTIAL RULES
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ONTOLOGICAL QUERY ANSWERING
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PREFERENCES
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SOCIAL CHOICE
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TOP-K QUERY ANSWERING
dc.subject.classification
Ciencias de la Computación

dc.subject.classification
Ciencias de la Computación e Información

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CIENCIAS NATURALES Y EXACTAS

dc.title
Ontological query answering under many-valued group preferences in Datalog+/–
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-23T17:32:37Z
dc.journal.volume
93
dc.journal.pagination
354-371
dc.journal.pais
Países Bajos

dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Betinna Fazzinga. National Research Council. ICAR-CNR; Italia
dc.description.fil
Fil: Thomas Lukasiewicz. University of Oxford. Department of Computer Science. The Alan Turing Institute; Reino Unido
dc.description.fil
Fil: Martinez, Maria Vanina. Universidad Nacional del Sur. Departamento de Ciencias e Ingeniería de la Computación. Instituto de Ciencias e Ingeniería de la Computación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
dc.description.fil
Fil: Simari, Gerardo. Universidad Nacional del Sur. Departamento de Ciencias e Ingeniería de la Computación. Instituto de Ciencias e Ingeniería de la Computación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
dc.description.fil
Fil: Oana Tifrea-Marciuska. University of Oxford. Department of Computer Science. The Alan Turing Institute; Reino Unido
dc.journal.title
International Journal Of Approximate Reasoning

dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0888613X17301068
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.ijar.2017.11.008
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