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Peer-to-peer(P2P)computing has attracted enormous media attention, initially spurred by the popularity of ?le sharing systems such as Napster, Gnutella, and Morpheus. Morerecently,systemslikeBitTorrentandeDonkeyhavecontinuedto sustain that attention. New techniques such as distributed hash-tables (DHTs), semantic routing, and Plaxton Meshes are being combined with traditional c- cepts such as Hypercubes, Trust Metrics and caching techniques to pool - gether the untapped computing power at the edges  of the Internet. These new techniques and possibilities have generated a lot of interest in many industrial organizations, and has resulted in the creation of a P2P working group on st- dardizationin this area (http://www. irtf. org/charter?gtype=rg&group=p2prg). In P2P computing, peers and services forego central coordination and - namically organize themselves to support knowledge sharing and collaboration, in both cooperative and non-cooperative environments. The success of P2P s- tems strongly depends on a number of factors. First, the ability to ensure eq- table distribution of content and services. Economic and business models which rely on incentive mechanisms to supply contributions to the system are being developed, along with methods for controlling the free riding  issue. Second, the ability to enforce provision of trusted services. Reputation-based P2P trust management models are becoming a focus of the research community as a - able solution. The trust models must balance both constraints imposed by the environment (e. g. , scalability) and the unique properties of trust as a social and psychological phenomenon.

Computer architecture. Operating systems --- Information systems --- Artificial intelligence. Robotics. Simulation. Graphics --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- IR (information retrieval) --- informatica --- maatschappij --- informatiesystemen --- KI (kunstmatige intelligentie) --- computernetwerken --- robots

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The aim of the International Workshop on Databases, Information Systems and P2P Computing was to explore the promise of P2P to o?er exciting new p- sibilities in distributed information processing and database technologies. The realization of this promise lies fundamentally in the availability of enhanced services such as structured ways for classifying and registering shared infor- tion, veri?cation and certi?cation of information, content distributed schemes and quality of content, security features, information discovery and accessib- ity, interoperation and composition of active information services, and ?nally market-based mechanisms to allow cooperative and noncooperative information exchanges. The P2P paradigm lends itself to constructing large-scale, complex, adaptive, autonomous and heterogeneous database and information systems, endowed with clearly speci?ed and di?erential capabilities to negotiate, bargain, coordinate and self-organize the information exchanges in large-scale networks. This vision will have a radical impact on the structure of complex organizations (business, sci- ti?c or otherwise) and on the emergence and the formation of social communities, and on how the information is organized and processed. The P2P information paradigm naturally encompasses static and wireless connectivity and static and mobile architectures. Wireless connectivity combined with the increasingly small and powerful mobile devices and sensors poses new challenges as well as opp- tunities to the database community. Information becomes ubiquitous, highly distributed and accessible anywhere and at any time over highly dynamic, - stable networks with very severe constraints on the information management and processing capabilities.

Computer architecture. Operating systems --- Information systems --- Artificial intelligence. Robotics. Simulation. Graphics --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- IR (information retrieval) --- informatiesystemen --- database management --- software engineering --- KI (kunstmatige intelligentie) --- computernetwerken --- robots