Gesellschaft fr Informatik e.V.

Lecture Notes in Informatics

Informatik 2004, Informatik verbindet, Band 1, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V. (GI), Ulm, 20. - 24. September 2004 P-50, 293-397 (2004).

GI, Gesellschaft für Informatik, Bonn


Peter Dadam, Manfred Reichert (eds.)

Copyright © GI, Gesellschaft für Informatik, Bonn


The buddy system: A distributed reputation system based on social structure

Stefan Fähnrich , Philipp Obreiter and Birgitta König-Ries


In ad hoc networks, there are no incentives to cooperate. There is neither a reward for cooperation nor a punishment for non-cooperation. A distributed reputation system could solve this problem, by giving means of managing trust towards other entities and discovering vicious entities. The existing distributed reputation systems are based on plausibility considerations and, thus, have several limitations. Therefore, in this paper, we aim at overcoming these limitations by proposing the Buddy System as a distributed reputation system that is based on social structure. For this purpose, we choose an appropriate social structure for the Buddy System and discuss the ensuing issues for its maintenance. Finally, we show by the means of simulation the robustness and effectiveness of the Buddy System.

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GI, Gesellschaft für Informatik, Bonn
ISBN 3-88579-379-2

Last changed 24.01.2012 21:46:49