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An Improved Incentive Ratio of the Resource Sharing on Cycles

Journal of the Operations Research Society of China 2019年第3期7卷 409-427页

作者： Yu-Kun Cheng Zi-Xin Zhou Suzhou Key Laboratory for Big Data and Information Service School of BusinessSuzhou University of Science and TechnologySuzhou 215009JiangsuChina Department of Computer Science and Technology Peking UniversityBeijing 100871China

Consider a resource sharing system in peer-to-peer(P2P)networks where peers act as both suppliers and customers of *** participant obtains the utility by exchanging its resources with its neighbors according to the preset rules.A series of recent work considered a market equilibrium mechanism and studied the robustness of such a protocol against the sybil attack strategy,which is a kind of grave threat in P2P *** concept of incentive ratio is applied to measure how much a participant could gain from the sybil attack by splitting its identity and reconstructing its communication connections with *** Chen et al.(Incentive ratios of a proportional sharing mechanism in resource ***:23rd Annual International Computing and Combinatorics Conference,2017)proved the incentive ratio on cycle networks is bounded by 2 and 4,an open problem is left that is how to narrow the gap *** this paper,we improve the upper bound of incentive ratio on cycle networks to *** improvement comes from a better understanding of the market equilibrium mechanism and a novel analysis technique for the improvement in utility.

关键词： Game theory Resource sharing Market equilibrium mechanism Incentive ratio sybil attac

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