Approximation Algorithms for the Single Allocation Problem in Hub-and-Spoke Networks.
Masaru IwasaHiroo SaitoTomomi MatsuiPublished in: Electron. Notes Discret. Math. (2006)
Keyphrases
- approximation algorithms
- np hard
- worst case
- special case
- minimum cost
- open shop
- constant factor
- exact algorithms
- vertex cover
- randomized algorithms
- primal dual
- set cover
- precedence constraints
- disjoint paths
- network design problem
- facility location problem
- np hardness
- approximation ratio
- complex networks
- network structure
- mathematical model
- lower bound
- genetic algorithm