| Article ID: | iaor20061812 |
| Country: | Netherlands |
| Volume: | 34 |
| Issue: | 1 |
| Start Page Number: | 94 |
| End Page Number: | 96 |
| Publication Date: | Jan 2006 |
| Journal: | Operations Research Letters |
| Authors: | Pisaruk Nicolai N. |
The network substitution problem is to substitute an existing network for a new network so as to minimize the cost of exploiting the existing network during the period when the new network is being constructed. We show that this problem is NP-hard, and propose a 2-approximation algorithm for solving it.