Peer-to-Peer Cooperation for Content-Oriented XML-Retrieval

XML-documents are used in rapidly increasing numbers by applications for Peer-to-Peer networks. Consequently, there is a growing need for techniques to search these documents with information retrieval methods. Current XML search engines for P2P- networks lack the use of such methods. In this paper, a P2P search engine is proposed that applies an extension of the vector space model and exploits structural information to compute relevance of XML-documents, and thus can significantly improve retrieval performance. We describe how peers can perform a distributed query execution through cooperated retrieval and ranking of dynamic XML documents in a structured P2P-network based on a DHT-algorithm.