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Query Processing in a Mediator Based Framework for Linked Data Integration

Query Processing in a Mediator Based Framework for Linked Data Integration

Vânia M. P. Vidal, José A. F. de Macêdo, João C. Pinheiro, Marco A. Casanova, Fábio Porto
Copyright: © 2011 |Volume: 7 |Issue: 2 |Pages: 19
ISSN: 1548-0631|EISSN: 1548-064X|EISBN13: 9781613505861|DOI: 10.4018/jbdcn.2011040103
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MLA

Vidal, Vânia M. P., et al. "Query Processing in a Mediator Based Framework for Linked Data Integration." IJBDCN vol.7, no.2 2011: pp.29-47. http://doi.org/10.4018/jbdcn.2011040103

APA

Vidal, V. M., de Macêdo, J. A., Pinheiro, J. C., Casanova, M. A., & Porto, F. (2011). Query Processing in a Mediator Based Framework for Linked Data Integration. International Journal of Business Data Communications and Networking (IJBDCN), 7(2), 29-47. http://doi.org/10.4018/jbdcn.2011040103

Chicago

Vidal, Vânia M. P., et al. "Query Processing in a Mediator Based Framework for Linked Data Integration," International Journal of Business Data Communications and Networking (IJBDCN) 7, no.2: 29-47. http://doi.org/10.4018/jbdcn.2011040103

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Abstract

In this paper, the authors present a three-level mediator based framework for linked data integration. In the approach, the mediated schema is represented by a domain ontology, which provides a conceptual representation of the application. Each relevant data source is described by a source ontology, published on the Web according to the Linked Data principles. Each source ontology is rewritten as an application ontology, whose vocabulary is restricted to be a subset of the vocabulary of the domain ontology. The main contribution of the paper is an algorithm for reformulating a user query into sub-queries over the data sources. The reformulation algorithm exploits inter-ontology links to return more complete query results. The approach is illustrated by an example of a virtual store mediating access to online booksellers.

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