Approximation algorithms for the fault-tolerant facility location problem with penalties

摘要

We study the fault-tolerant facility location problem with penalties (FTFLPWP). We present an LP-rounding 4-approximation algorithm. Then we apply the randomized rounding technique to improve the approximation to 3.16, which is further improved to 2.408 by the greedy augmentation technique. (C) 2019 Elsevier B.V. All rights reserved.