Analysis of push-type epidemic data dissemination in fully connected networks

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2014-07-01

Author

ÇAĞLAR, MİNE
Sezer, Ali Devin

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Consider a fully connected network of nodes, some of which have a piece of data to be disseminated to the whole network. We analyze the following push-type epidemic algorithm: in each push round, every node that has the data, i.e., every infected node, randomly chooses c E Z. other nodes in the network and transmits, i.e., pushes, the data to them. We write this round as a random walk whose each step corresponds to a random selection of one of the infected nodes; this gives recursive formulas for the distribution and the moments of the number of newly infected nodes in a push round. We use the formula for the distribution to compute the expected number of rounds so that a given percentage of the network is infected and continue a numerical comparison of the push algorithm and the pull algorithm (where the susceptible nodes randomly choose peers) initiated in an earlier work. We then derive the fluid and diffusion limits of the random walk as the network size goes to infinity and deduce a number of properties of the push algorithm: (1) the number of newly infected nodes in a push round, and the number of random selections needed so that a given percent of the network is infected, are both asymptotically normal, (2) for large networks, starting with a nonzero proportion of infected nodes, a pull round infects slightly more nodes on average, (3) the number of rounds until a given proportion lambda of the network is infected converges to a constant for almost all lambda is an element of (0, 1). Numerical examples for theoretical results are provided. (C) 2014 Elsevier ay. All rights reserved.

Subject Keywords

Peer to peer, Pull, Push, Epidemics, Epidemic algorithm, Diffusion, Fluid, Approximation, Asymptotic, Analysis, Data dissemination, Fully connected, Network, Graph

URI

https://hdl.handle.net/11511/31122

Journal

PERFORMANCE EVALUATION

DOI

https://doi.org/10.1016/j.peva.2014.03.002

Collections

Graduate School of Applied Mathematics, Article

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Citation Formats

M. ÇAĞLAR and A. D. Sezer, “Analysis of push-type epidemic data dissemination in fully connected networks,” PERFORMANCE EVALUATION, pp. 21–36, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31122.