Download Agents and Peer-to-Peer Computing: Third International by Arturo Crespo, Hector Garcia-Molina (auth.), Gianluca Moro, PDF

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

Peer-to-peer (P2P) computing is attracting huge, immense media realization, spurred by means of the recognition of dossier sharing structures similar to Napster, Gnutella, and Morpheus. The friends are self sustaining, or as a few name them, top notch voters. P2P networks are rising as a brand new allotted computing paradigm for his or her capability to harness the computing energy of the hosts composing the community and make their under-utilized assets to be had to others. even though researchers engaged on allotted computing, multiagent platforms, databases and networks were utilizing comparable recommendations for a very long time, it's only lately that papers stimulated by means of the present P2P paradigm have all started showing in fine quality meetings and workshops. study in agent structures particularly seems to be so much suitable simply because, considering that their inception, multiagent structures have constantly been regarded as networks of co-workers. The multiagent paradigm can therefore be superimposed at the P2P structure, the place brokers include 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 velocity of development that provides P2P its benefits additionally results in major capability difficulties. such a lot favorite between those difficulties are coordination, the facility of an agent to make judgements by itself activities within the context of actions of alternative brokers, and scalability, the price of the P2P platforms lies in how good they scale alongside numerous dimensions, together with complexity, heterogeneity of colleagues, robustness, site visitors redistribution, and so on.

This quantity offers the absolutely revised papers provided on the 3rd foreign Workshop on brokers and Peer-to-Peer Computing, AP2PC 2004, held in manhattan urban on July 19, 2004 within the context of the 3rd overseas Joint convention on self sustaining brokers and Multi-Agent platforms (AAMAS 2004). the quantity is prepared in topical sections on P2P networks and seek functionality, emergent groups and social behaviours, semantic integration, cellular P2P platforms, adaptive platforms, 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

Example text

Lookup protocols owing to the flexibility of our architecture. We assume a symmetric, bi-directional, and transitive routing in the network in our architecture. 1 Design Overview The underlying structure of the DiST protocol is a distributed search tree, with a group of peers acting together as a node of the tree. The root group of the tree holds information about the number of groups in the tree and the number of members in each group. This information is used to decide the potential group to which a new member joining the network should belong.

Unlike IP, there is no assumption of an instantaneous source-to-destination routing path nor are there limitations placed on latency or packet loss. In essence, arbitrary delays along the routing path are tolerated by incorporating storage and retransmission in the network itself. DTNs are useful for enabling messaging over so-called challenged networks [2] which have inherent network deficiencies that prohibit communication using standard IP. Examples of challenged networks include satellite-based communication, sensor networks, and ad-hoc mobile networks.

25. Tsoumakos, Dimitrios and Nick Roussopoulos. A Comparison of Peer-to-Peer Search Methods. Proc. ACM WebDB 2003, pp. 61-66, 2003. 26. Tsoumakos, Dimitrios and Nick Roussopoulos. Adaptive Probabilistic Search for Peer-to-Peer Networks. Proc. IEEE P2P2003, pp. 102-109, 2003. 27. Walsh, Toby. Search in a Small World. Proc. IJCAI99, pp. 1172-1177, JulyAugust 1999. 28. Watts, Duncan and Steven Strogatz. Collective Dynamics of ‘Small-World’ Networks. Nature, 393:440-442, June 1998. 29. Yang, Beverly and Hector Garcia-Molina.

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