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Complexity of column generation in network design with path-based survivability mechanisms

Författare:
Publiceringsår: 2012
Språk: Engelska
Sidor: 132-147
Publikation/Tidskrift/Serie: Networks
Volym: 59
Nummer: 1
Dokumenttyp: Artikel i tidskrift
Förlag: John Wiley & Sons

Sammanfattning

Abstract in Undetermined

his survey deals with computational complexity of column generation problems arising in the design of survivable communication networks. Such problems are often modeled as linear programs based on noncompact multicommodity flow network formulations. These formulations involve an exponential number of path-flow variables, and therefore require column generation to be solved to optimality. We consider several path-based protection and restoration mechanisms and present results, both known and new, on the complexity of the corresponding column generation (also called pricing) problems. We discuss results for the case of single link or single node failures scenarios, and extend the considerations to multiple link failures. Further, we classify the design problems corresponding to different survivability mechanisms according to the structure of their pricing problem. Eventually, we show that almost all the encountered pricing problems are hard to solve for scenarios admitting multiple failures, while a great deal of them are NP-hard already for single failure scenarios.

Nyckelord

  • Electrical Engineering, Electronic Engineering, Information Engineering
  • mixed-integer programing
  • computational complexity
  • column
  • path
  • generation
  • survivable network design

Övriga

Published
  • Networking-lup-obsolete
  • ISSN: 1097-0037

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