XML Filtering for Publish/Subscribe System in a Mobile Environment

Abstract

The publish/subscribe model has gained acceptance as a solution for the loose coupling of systems in terms of asynchronous communication enabling Selective Dissemination of Information (SDI) to mobile clients. The advent of Extensible Markup Language (XML) as a de facto standard for information exchange and the development of query languages for XML data enable the development of more sophisticated filtering mechanisms. The inherent limitations of mobile devices necessitate information to be delivered to mobile clients to be highly personalized according to user profiles. This paper proposes an approach that integrates publish/subscribe system and XML message filtering by describing indexing mechanism to enhance Xfilter algorithm based on a modified Finite State Machine (FSM) approach that can quickly locate and evaluate relevant profiles.