weiyu - Introduction Model Analysis Results Hidden Actions...

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Unformatted text preview: Introduction Model Analysis Results Hidden Actions Analysis in p2p Systems Weiyu Zhang, Oleg Naroditsky December 6, 2009 Weiyu Zhang, Oleg Naroditsky Hidden Actions Analysis in p2p Systems Introduction Model Analysis Results 1 Introduction 2 Model 3 Analysis 4 Results Weiyu Zhang, Oleg Naroditsky Hidden Actions Analysis in p2p Systems Introduction Model Analysis Results Currency Based Incentive Peers would earn currency by contributing resources, and spend currency to obtain resources. e.g. MojoNation, Karma Weiyu Zhang, Oleg Naroditsky Hidden Actions Analysis in p2p Systems Introduction Model Analysis Results Currency Based Incentive Peers would earn currency by contributing resources, and spend currency to obtain resources. e.g. MojoNation, Karma Golle et al. (2001) shows if peers are charged an amount proportional to their gap between uploads and downloads, strict Nash equilibrium exists. Weiyu Zhang, Oleg Naroditsky Hidden Actions Analysis in p2p Systems Introduction Model Analysis Results Currency Based Incentive Peers would earn currency by contributing resources, and spend currency to obtain resources. e.g. MojoNation, Karma Golle et al. (2001) shows if peers are charged an amount proportional to their gap between uploads and downloads, strict Nash equilibrium exists. Friedman et al. (2006) shows if peers play threshold strategy, Nash equilibrium also exists. The amount of money in the system can affect the system efficiency. Weiyu Zhang, Oleg Naroditsky Hidden Actions Analysis in p2p Systems Introduction Model Analysis Results Currency Based Incentive Peers would earn currency by contributing resources, and spend currency to obtain resources. e.g. MojoNation, Karma Golle et al. (2001) shows if peers are charged an amount proportional to their gap between uploads and downloads, strict Nash equilibrium exists. Friedman et al. (2006) shows if peers play threshold strategy, Nash equilibrium also exists. The amount of money in the system can affect the system efficiency. Problems : whitewashing attack. Weiyu Zhang, Oleg Naroditsky Hidden Actions Analysis in p2p Systems Introduction Model Analysis Results Hidden Actions in p2p Systems ”Hidden Actions” means strategic behaviour of individuals with ”selfish” goals, while their actions are hidden from the rest of the network. e.g. Request forward....
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This note was uploaded on 12/08/2011 for the course CIS 677 taught by Professor Michaelkearns during the Fall '09 term at Penn State.

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weiyu - Introduction Model Analysis Results Hidden Actions...

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