TY - GEN

T1 - A fast parallel algorithm for finding a most reliable source on a general ring-tree graph with unreliable edges

AU - Ding, Wei

AU - Xue, Guoliang

PY - 2011/8/29

Y1 - 2011/8/29

N2 - Given an unreliable communication network, we aim to find a most reliable source (MRS) on the network, which maximizes the expected number of nodes that are reachable from it. Although the problem of finding an MRS on general graphs is #P-hard, it is tractable in several types of sparse graphs. The ring-tree graph is such a kind of sparse graph that not only has the capability of failure tolerance but also holds an underlying tree topology which facilitates network administration. In this paper, we are concerned with unreliable general ring-tree graphs in which each edge has an independent operational probability while all nodes are immune to failures. We first design a complementary dynamic programming algorithm and then develop a parallel algorithm based on the underlying tree for finding an MRS on the network.

AB - Given an unreliable communication network, we aim to find a most reliable source (MRS) on the network, which maximizes the expected number of nodes that are reachable from it. Although the problem of finding an MRS on general graphs is #P-hard, it is tractable in several types of sparse graphs. The ring-tree graph is such a kind of sparse graph that not only has the capability of failure tolerance but also holds an underlying tree topology which facilitates network administration. In this paper, we are concerned with unreliable general ring-tree graphs in which each edge has an independent operational probability while all nodes are immune to failures. We first design a complementary dynamic programming algorithm and then develop a parallel algorithm based on the underlying tree for finding an MRS on the network.

KW - Most reliable source

KW - complementary dynamic programming

KW - general ring-tree graph

KW - parallel algorithm

UR - http://www.scopus.com/inward/record.url?scp=80051954604&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80051954604&partnerID=8YFLogxK

U2 - 10.1007/978-3-642-22616-8_9

DO - 10.1007/978-3-642-22616-8_9

M3 - Conference contribution

AN - SCOPUS:80051954604

SN - 9783642226151

T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

SP - 98

EP - 112

BT - Combinatorial Optimization and Applications - 5th International Conference, COCOA 2011, Proceedings

T2 - 5th Annual International Conference on Combinatorial Optimization and Applications, COCOA 2011

Y2 - 4 August 2011 through 6 August 2011

ER -