Active Ontology: An Information Integration Approach for Highly Dynamic Information Sources

A poster presentation written by Marios Dikaiakos, Oscar Corcho, Wei Xing and Carole Goble. It was presented at the ESWC2007. It is about Grid, Information Integration, EGEE and Information Services

[edit] Abstract

In this paper we describe an ontology-based information integration approach that is suitable for highly dynamic distributed information sources, such as those available in Grid systems. The main challenges addressed are: 1) information changes frequently and information requests have to be answered quickly in order to provide up-to-date information; and 2) the most suitable information sources have to be selected from a set of different distributed ones that can provide the information needed. To deal with the first challenge we use an information cache that works with an update-on-demand policy. To deal with the second we add an information source selection step to the usual architecture used for ontology-based information integration. To illustrate our approach, we have developed an information service that aggregates metadata available in hundreds of information services of the EGEE Grid infrastructure.

This data has been imported from the ESWC2007 RDF