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Probabilistic analysis of the network reliability problem on a random graph ensemble

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2 Author(s)
Akiyuki Yano ; Dept. of Comput. Sci. & Eng., Nagoya Inst. of Technol., Nagoya, Japan ; Tadashi Wadayama

In the field of computer science, the network reliability problem for evaluating the network failure probability has been extensively investigated. For a given undirected graph G, the network failure probability is the probability that edge failures (i.e., edge erasures) make G unconnected. Edge failures are assumed to occur independently with the same probability. The main contributions of the present paper are the upper and lower bounds on the expected network failure probability. We herein assume a simple random graph ensemble that is closely related to the Erdos-Rényi random graph ensemble. These upper and lower bounds exhibit the typical behavior of the network failure probability. The proof is based on the fact that the cutset space of G is a linear space over F2 spanned by the incident matrix of G. The present study shows a close relationship between the ensemble analysis of the expected network failure probability and the ensemble analysis of the average weight distribution of LDGM codes with column weight 2.

Published in:

Information Theory and its Applications (ISITA), 2012 International Symposium on

Date of Conference:

28-31 Oct. 2012