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The Impact of Churn on Uncertainty Decay in P2P Reputation Systems

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1 Author(s)
Marc Sanchez-Artigas ; Universitat Rovira i Virgili, Tarragona

Reputation systems rely on historical information to account for uncertainty about users' intention to cooperate, but accumulating experience over long time periods is challenging in many situations. In peer-to-peer (P2P) systems, this operation is particularly hard due to churn-the continuous process of node arrival and departure. Key issues here include how churn impacts newcomers' perceptions and which key factors result in a slowing of uncertainty decay. New research explores these issues, and experimental results show the impact of churn on uncertainty reduction.

Published in:

IEEE Internet Computing  (Volume:14 ,  Issue: 5 )