Approximation Algorithms for Several Graph Augmentation Problems.
Greg N. FredericksonJoseph F. JáJáPublished in: SIAM J. Comput. (1981)
Keyphrases
- approximation algorithms
- vertex cover
- np hard
- np hardness
- approximation schemes
- randomized algorithms
- special case
- undirected graph
- np complete
- worst case
- disjoint paths
- exact algorithms
- network design problem
- minimum cost
- directed graph
- constant factor
- combinatorial optimization
- facility location problem
- graphical models