Macedo Sousa Maia

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The Web of Linked Data forms a single, globally distributed Web. Querying this dataspace poses new challenges that are not addressed by traditional research on federated query processing. Linked data integration applications must meet the requirements of efficient query processing in the distributed setting. This paper presents QEF-LD, a query engine that(More)
Semantic Web technologies like RDF model, URIs and SPARQL query language, can reduce the complexity of data integration by making use of properly established and described links between sources. However, the diculty to formulate distributed queries has been a challenge to harness the potential of these technologies due to autonomy, distribution and(More)
Motivated by the success of Linked Data and driven by the growing number of data sources into RDF files available on the web, new challenges for query processing are emerging, especially in distributed settings. These environments allow distributed execution of federated queries, which involve joining data provided by multiple sources, which are often(More)
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