By Ben Tse, Raman Paranjape, Samuel R. H. Joseph (auth.), Sam Joseph, Zoran Despotovic, Gianluca Moro, Sonia Bergamaschi (eds.)

ISBN-10: 3540797041

ISBN-13: 9783540797043

This ebook constitutes the completely refereed post-workshop court cases of the fifth foreign Workshop on brokers and Peer-to-Peer Computing, AP2PC 2006, held in Hakodate, Japan, in could 2006, within the context of the fifth foreign Joint convention on self sufficient brokers and Multi-Agent structures, AAMAS 2006.

The 10 revised complete papers and six revised brief papers offered including 1 invited paper have been conscientiously reviewed and chosen from 23 submissions; they're absolutely revised to include reviewers' reviews and discussions on the workshop. the amount is prepared in topical sections on P2P Infrastructure, brokers in P2P, P2P seek, and applications.

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Extra resources for Agents and Peer-to-Peer Computing: 5th International Workshop, AP2PC 2006, Hakodate, Japan, May 9, 2006, Revised and Invited Papers

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G. office computers with hard-wired connections to the Internet). g. all mobile participants such as GSM mobile phones or WLAN PDAs) are temporary nodes. We require a minor modification to the object mapping rules of the DHT: In contrast to the conventional DHT protocol, a reference to a shared object is stored on the closest static node of the object’s key. (The term “closest” refers to 22 S. Zoels et al. ) In contrast, temporary nodes maintain only a pointer to their succeeding static node. Thus whenever a temporary node in the network receives an INSERT or QUERY request (due to its responsibility for the key given in the request) it simply forwards this request to its closest static node which in turn stores the according reference(s).

To evaluate HCP in a more realistic scenario, we set up a heterogeneous overlay network with 2000 nodes, partitioned into five different node classes: 100 office computers, 700 DSL subscribers, 400 ISDN users, 400 PDAs, and 400 mobile phones. Table 3 illustrates the modeling of these nodes classes. Table 3. Simulation parameters for scenario 3 Number of node classes: Node class: Mean online time: Failure probability: Number of shared objects: Average query rate: 1 every... 1% 0-30 10 min 1 hour DSL 2h 5% 0-30 8 min ISDN 30 min 10% 0-15 5 min PDA 10 min 35% 0-8 1 min PHONE 2 min 50% 0-5 20 s Again, the mean online time and the average query rate of overlay nodes are negative exponentially distributed and the number of shared objects is distributed equally between the given minimum and maximum value.

Second, it makes the system work well even in the high ratio of malicious peers in the overlay. Third, it allows the arbitrary behavior of malicious routing peers. Fourth, it uses the alternate lookup path [6] and the query observation [4]. The rest of this paper is organized as follows. In Section 2, related works and their differences with our work are discussed. In Section 3 and 4, the adversary model and the characteristics of the proposed system are described. Section 5 describes the exclusion routing protocol.

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Agents and Peer-to-Peer Computing: 5th International Workshop, AP2PC 2006, Hakodate, Japan, May 9, 2006, Revised and Invited Papers by Ben Tse, Raman Paranjape, Samuel R. H. Joseph (auth.), Sam Joseph, Zoran Despotovic, Gianluca Moro, Sonia Bergamaschi (eds.)


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