An ActOn-based semantic information service for Grids
Dikaiakos, Marios D.
SourceFuture Generation Computer Systems
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We describe a semantic information service that aggregates metadata from a large number of information sources of a large-scale Grid infrastructure. It uses an ontology-based information integration architecture (ActOn) suitable for the highly dynamic distributed information sources available in Grid systems, where information changes frequently and where the information of distributed sources has to be aggregated in order to solve complex queries. These two challenges are addressed by a Metadata Cache that works with an update-on-demand policy and by an information source selection module that selects the most suitable source at a given point in time. We have evaluated the quality of this information service, and compared it with other similar services from the EGEE production testbed, with promising results. © 2009 Elsevier B.V. All rights reserved.
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Xing, Wei; Corcho, O.; Goble, C.; Dikaiakos, Marios D. (2007)We describe an information service that aggregates metadata available in hundreds of information sources of the EGEE Grid infrastructure. It uses an ontology-based information integration architecture (ActOn), which is ...
Xing, Wei; Corcho, O.; Goble, C.; Dikaiakos, Marios D. (Springer Science and Business Media, LLC, 2007)The quality of the information provided by information services deployed in the EGEE production testbed differs from one system to another. Under the same conditions, the answers provided for the same query by different ...
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