Content-Based Routing of Path Queries in Peer-to-Peer Systems Georgia Koloniari and Evaggelia Pitoura   View Paper (PDF)   Return to Session 1: Security and Privacy for Web Databases and Services Abstract #64257;lters in routing path queries. Furthermore, the content-based hierarchical grouping of nodes increases recall, that is, the number of documents that are retrieved. ©2005 Association for Computing Machinery