This book constitutes the thoroughly refereed post-proceedings of the 4th International Workshop on Agents and Peer-to-Peer Computing, AP2PC 2005, held in Utrecht, Netherlands, on July 25th, 2005, in the context of the 4th International Joint Conference on Autonomous Agents and Multi-Agent Systems, AAMAS 2005.
The 13 revised full papers presented were carefully reviewed and selected from 27 submissions; they are fully revised to incorporate reviewers' comments and discussions at the workshop. The volume is organized in topical sections on trust and reputation, P2P infrastructure, semantic infrastructure, as well as community and mobile applications.
