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Score Manager Discovery in EigenTrust Using Virtual Magnetic Fields

Authors:
Henrique Galperin
Luiz Augusto de Paula Lima Jr.
Alcides Calsavara

Keywords: EigenTrust; reputation systems; P2P; virtual magnetic fields

Abstract:
EigenTrust is a well-known distributed reputation system that uses random nodes (called Score Managers) to compute the reputation of other nodes in the network. In the original proposal, the selection of the Score Managers is made by successive hashes in a DHT. This paper proposes the usage of Virtual Magnetic Fields in replacement of DHTs in the selection of Score Managers in the EigenTrust reputation system. Virtual Magnetic Fields are self-organizing message forwarding mechanisms that are capable of delivering messages to specific nodes according to some non-functional aspects concerning the application semantics. A comparative analysis showed that the EigenTrust efficiency was improved in the proposed solution by removing the cost of the discovery of a Score Manager, and by introducing a low cost method for dissemination of information as nodes join and leave the network.

Pages: 52 to 57

Copyright: Copyright (c) IARIA, 2011

Publication date: October 23, 2011

Published in: conference

ISSN: 2308-3484

ISBN: 978-1-61208-161-8

Location: Barcelona, Spain

Dates: from October 23, 2011 to October 29, 2011