An ActOn-based semantic information service for Grids

  • Authors:
  • Wei Xing;Oscar Corcho;Carole Goble;Marios D. Dikaiakos

  • Affiliations:
  • Information Management Group, School of Computer Science, University of Manchester, UK;Ontology Engineering Group, Departamento de Inteligencia Artificial, Facultad de Informática, Universidad Politécnica de Madrid, Spain;Information Management Group, School of Computer Science, University of Manchester, UK;Department of Computer Science, University of Cyprus, Cyprus

  • Venue:
  • Future Generation Computer Systems
  • Year:
  • 2010

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Abstract

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.