Information Systems - Special issue: The semantic web and web services
On embedding task memory in services composition frameworks
ICWE'07 Proceedings of the 7th international conference on Web engineering
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Increased inter-organisation business activities over the years created a high demand for online catalog integration. Although solutions have been proposed to deal with small collections of catalogs, the need for building large, scalable and adaptive catalog integration systems has been overlooked. We propose a framework for building catalog portals to cater for the integration and evolution of large numbers of e-catalogs. Catalog portals are formed through catalog communities and the semantic relationships between them. A catalog community is a container of e-catalogs that offer products coming from the same domain (e.g., community of books, community of laptops, etc). The communities act as data integration mediators and have individual schemas to support semantically rich queries. Links between communities can be established based on their domains and the semantic relationships between them. Links between communities are used for (i) user navigation, and (ii) routing queries among communities. This architecture facilitates distributed and scalable integration and querying of e-catalogs. Also, catalogs are designed by system designers who have a priori expectations for how catalogs will be explored and queried. It is necessary to consider the actual usage of the catalogs since the designer's anticipation may not have been correct. In catalog communities, we continuously monitor the usage of catalogs (e.g., how users are exploring them, how queries are processed) so that they can be adapted and restructured over time. The adaptation of integrated catalogs is based on the observation of customers' interaction patterns and query routing patterns between communities.