Unifying Models of Churn and Resilience for Unstructured P2P Graphs
IEEE Trans. Parallel Distrib. Syst.(2014)
摘要
Previous analytical results on the resilience of unstructured P2P systems have not explicitly modeled heterogeneity of user churn (i.e, difference in online behavior) or the impact of in-degree on system resilience. To overcome these limitations, we introduce a unifying model of heterogeneous user churn and derive the distribution of the various metrics observed in prior experimental studies. We also show that the arrival process of in-edges to each user converges to Poisson when system size tends to infinity, model transient behavior of in-degree, and apply these results to obtain the joint in/out-degree isolation probability.
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关键词
stochastic processes,joint in-out-degree isolation probability,system resilience,user churn heterogeneity,peer-to-peer systems,pareto,churn model,unstructured p2p systems,peer-to-peer,resilience model,peer-to-peer computing,stochastic lifetime resilience,in-degree transient behavior
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