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    Peer-based query rewriting in SPARQL for semantic integration of linked data

    Dimartino, Mirko (2015) Peer-based query rewriting in SPARQL for semantic integration of linked data. CEUR Workshop Proceedings 1491 , ISSN 1613-0073.

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    In this proposal we address the problem of ontology-based SPARQL query answering over distributed Linked Data sources, where the ontology is given by conjunctive mappings between the source schemas in a peer-to-peer fashion and by equality constraints between constants. In our setting, the data is not materialised in a single datastore: it is accessed in a distributed environment through SPARQL endpoints. We aim to achieve query answering by generating the perfect rewriting of the original query and then processing the rewritten query over distributed SPARQL endpoints. We identify a subset of ontology constraints that enjoy the first-order rewritability property and we perform preliminary empirical evaluation taking into account such restricted constraints only. For future work, we aim to tackle the query answering problem in the general case.


    Item Type: Article
    Additional Information: Proceedings of the Doctoral Consortium at the 14th International Semantic Web Conference (ISWC 2015) Bethlehem, Pennsylvania, USA, October 12, 2015.
    Keyword(s) / Subject(s): Distributed environments, Empirical evaluations, Equality constraints, Peer-to-peer fashion, Query answering, Query rewritings, Query-answering problems, Semantic integration
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Computing and Mathematical Sciences
    Depositing User: Administrator
    Date Deposited: 04 Aug 2016 10:42
    Last Modified: 09 Aug 2023 12:38


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