The arbitrary Boolean publish/subscribe model: making the case
Proceedings of the 2007 inaugural international conference on Distributed event-based systems
Proceedings of the international workshop on Workshop on multimedia information retrieval
Exploiting semantic proximities for content search over p2p networks
Computer Communications
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It is demonstrated how to provide a peer-to-peer system that supports an expressive query language while maintaining efficient distribution over a wide-area network. The key is to base message routing on the contents of the query messages and to use advertisements from resource providers to make that routing efficient. Advertisements are special queries that describe the data sets available at each site. Queries are encoded as messages that are efficiently distributed to sites providing advertisements Distribution is determined by using a limited form of symbolic execution to intersect queries and advertisements. Performance measurements indicate that cost of symbolic intersection is low.