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Exact Computation of Strongly Connected Reliability by Binary Decision Diagrams

  • Hirofumi Suzuki
  • Masakazu Ishihata
  • Shin-ichi Minato
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11346)

Abstract

Network reliability is the probability that a network system can perform a desired operation, such as communication between facilities, against stochastic equipment failures. On analyzing network systems that are represented by undirected graphs, the all-terminal reliability (ATR) is commonly used as one of the network reliability. As a natural extension of the ATR for the directed version, the strongly connected reliability (SCR) is known. The SCR should be computed on various network systems, such as ad-hoc network, that demand the property called strongly connected. Unfortunately, computing the SCR is known to be #P-complete, and little studies challenge the computation of the exact or an approximate SCR on limited graph classes. In this study, we propose the first practically efficient algorithm to compute the exact SCR in general. The algorithm constructs a binary decision diagram (BDD) representing all the strongly connected spanning subgraphs (SCSSs) in a given directed graph. Subsequently, the algorithm computes the exact SCR by a dynamic programming on the BDD. To efficiently construct BDDs, we designed a new variant of the frontier based search (FBS). We conducted computational experiments to evaluate the proposed algorithm. The results demonstrated that the proposed algorithm succeeded in computing the SCR in real-world networks with a few hundred edges within a reasonable time, which was previously impossible.

Keywords

Network reliability All-terminal reliability Strongly connected reliability Binary decision diagram Dynamic programming 

Notes

Acknowledgement

This work was supported by JSPS KAKENHI Grant Number 15H05711.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Graduate School of Information Science and TechnologyHokkaido UniversitySapporoJapan
  2. 2.NTT Communication Science LaboratoriesKyotoJapan
  3. 3.Graduate School of InformaticsKyoto UniversityKyotoJapan

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