By Arturo Crespo, Hector Garcia-Molina (auth.), Gianluca Moro, Sonia Bergamaschi, Karl Aberer (eds.)

ISBN-10: 3540297553

ISBN-13: 9783540297550

Peer-to-peer (P2P) computing is attracting huge, immense media realization, spurred through the recognition of dossier sharing structures akin to Napster, Gnutella, and Morpheus. The friends are independent, or as a few name them, firstclass voters. P2P networks are rising as a brand new allotted computing paradigm for his or her capability to harness the computing strength of the hosts composing the community and make their under-utilized assets on hand to others. even if researchers engaged on allotted computing, multiagent platforms, databases and networks were utilizing comparable thoughts for a very long time, it is just lately that papers prompted by means of the present P2P paradigm have began showing in high quality meetings and workshops. learn in agent platforms particularly seems to be such a lot suitable simply because, considering their inception, multiagent platforms have continuously been regarded as networks of associates. The multiagent paradigm can therefore be superimposed at the P2P structure, the place brokers embrace the outline of the duty environments, the decision-support functions, the collective habit, and the interplay protocols of every peer. The emphasis during this context on decentralization, person autonomy, ease and pace of progress that provides P2P its merits additionally ends up in major strength difficulties. so much well known between those difficulties are coordination, the power of an agent to make judgements by itself activities within the context of actions of different brokers, and scalability, the worth of the P2P platforms lies in how good they scale alongside numerous dimensions, together with complexity, heterogeneity of associates, robustness, site visitors redistribution, and so on.

This quantity provides the totally revised papers awarded on the 3rd foreign Workshop on brokers and Peer-to-Peer Computing, AP2PC 2004, held in long island urban on July 19, 2004 within the context of the 3rd overseas Joint convention on self reliant brokers and Multi-Agent structures (AAMAS 2004). the quantity is geared up in topical sections on P2P networks and seek functionality, emergent groups and social behaviours, semantic integration, cellular P2P platforms, adaptive structures, agent-based source discovery, in addition to belief and reputation.

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Additional info for Agents and Peer-to-Peer Computing: Third International Workshop, AP2PC 2004, New York, NY, USA, July 19, 2004, Revised and Invited Papers

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The effectiveness of caching and replication in such architectures is not significant since a data key always maps to a unique network node. These algorithms are effective in different ways. Many of the DHT based algorithms cannot see much benefit due to caching as data items or keys map to unique nodes. However the characteristics of requests indicate popularity of documents and hence caching and replication mechanisms can significantly impact the performance of the network. In this paper, we design a novel architecture that takes advantage of the efficiency of Distributed Hash Tables while providing flexibility that can make good use of caching and replication mechanisms.

The number of “messages” sent between peers in the network during the search process). There are two broad classes of search techniques for unstructured P2P graphs: uninformed (blind) and informed (heuristic) [25]. Uninformed algorithms utilize only local connectivity knowledge of the graph during search. Sometimes this is the best we can do; without the ability to maintain some local state, search can do little more than follow some systematic blind routine. If we can maintain some local state, then search can proceed in a more intelligent manner.

The Internet Indirection Infrastructure (i3) is another possible choice as a substrate for building a DTN. In i3, packets are sent not to an IP address but rather to a rendezvous node identified by an m-bit key, called k. An overlay network (Chord is used in the i3 implementation) then routes data packets to the node associated by successor(k) in the Chord system. Any interested parties can register triggers with the rendezvous node (again, using the key k to identify 38 C. Yoshikawa, B. Chun, and A.

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Agents and Peer-to-Peer Computing: Third International Workshop, AP2PC 2004, New York, NY, USA, July 19, 2004, Revised and Invited Papers by Arturo Crespo, Hector Garcia-Molina (auth.), Gianluca Moro, Sonia Bergamaschi, Karl Aberer (eds.)


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