owl:sameAs and Linked Data: An Empirical Study

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Abstract:

Linked Data is a steadily growing presence on the Web. In Linked Data, the description of resources can be obtained incrementally by dereferencing the URIs of resources via the HTTP protocol. The use of owl:sameAs further enriches the Linked Data space by declaratively supporting distributed semantic data integration at the instance level. When consuming Linked Data, users should be careful when handling owl:sameAs: in that URIs linked by owl:sameAs may not be appropriate for simple aggregation, and that recursively exploring owl:sameAs may lead to considerable network overhead. In this work, we discuss and conduct an empirical pilot study on the usage of owl:sameAs in the Linked Data community. The results include initial quantitative measures of the usage of owl:sameAs. Based on observations of these results, we further discuss several strategies for dealing with owl:sameAs in Linked Data applications.

History

DateCreated ByLink
July 19, 2011
16:07:34
Ping WangDownload

Related Projects:

Inference Web Project LogoInference Web
Principal Investigator: Deborah L. McGuinness
Description: The Inference Web is a Semantic Web based knowledge provenance infrastructure that supports interoperable explanations of sources, assumptions, learned information, and answers as an enabler for trust. Provenance - if users (humans and agents) are to use and integrate data from unknown, uncertain, or multiple sources, they need provenance metadata for evaluation Interoperability - more systems are using varied sources and multiple information manipulation engines, thus increasing interoperability requirements Explanation/Justification - if information has been manipulated (i.e., by sound deduction or by heuristic processes), information manipulation trace information should be available Trust - if some sources are more trustworthy than others, trust ratings are desired The Inference Web consists of two important components: Proof Markup Language (PML) Ontology - Semantic Web based representation for exchanging explanations including provenance information - annotating the sources of knowledge justification information - annotating the steps for deriving the conclusions or executing workflows trust information - annotating trustworthiness assertions about knowledge and sources IW Toolkit - Web-based and standalone tools that facilitate human users to browse, debug, explain, and abstract the knowledge encoded in PML.

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Lead Professor: Deborah L. McGuinness
Description: Inference And Trust
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Knowledge Provenance
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