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The rise in availability of web-based data sources has led to new challenges in data integration systems for obtaining decentralized, wide-scale sharing of data preserving semantics. In this paper we present a framework for integrating heterogeneous XML data sources distributed over a large-scale, highly dynamic network of autonomous nodes. We propose a query reformulation algorithm to combine and query distributed XML databases through a decentralized point-to-point mediation process among thedoi:10.1109/skg.2008.30 dblp:conf/skg/ComitoT08 fatcat:kuojgzvfhbh6fanuluptpygiki