e-approximations with minimum packing constraint violation (extended abstract)
STOC '92 Proceedings of the twenty-fourth annual ACM symposium on Theory of computing
Approximation algorithms for facility location problems (extended abstract)
STOC '97 Proceedings of the twenty-ninth annual ACM symposium on Theory of computing
Greedy strikes back: improved facility location algorithms
Proceedings of the ninth annual ACM-SIAM symposium on Discrete algorithms
A 3-approximation algorithm for the k-level uncapacitated facility location problem
Information Processing Letters
A new greedy approach for facility location problems
STOC '02 Proceedings of the thiry-fourth annual ACM symposium on Theory of computing
An Improved Approximation Algorithm for the Metric Uncapacitated Facility Location Problem
Proceedings of the 9th International IPCO Conference on Integer Programming and Combinatorial Optimization
Approximation algorithms for facility location problems
APPROX '00 Proceedings of the Third International Workshop on Approximation Algorithms for Combinatorial Optimization
Improved Approximation Algorithms for Metric Facility Location Problems
APPROX '02 Proceedings of the 5th International Workshop on Approximation Algorithms for Combinatorial Optimization
Improved Combinatorial Algorithms for the Facility Location and k-Median Problems
FOCS '99 Proceedings of the 40th Annual Symposium on Foundations of Computer Science
Improved Approximation Algorithms for the Uncapacitated Facility Location Problem
SIAM Journal on Computing
Approximating the two-level facility location problem via a quasi-greedy approach
Mathematical Programming: Series A and B
Improved combinatorial approximation algorithms for the k-level facility location problem
ICALP'03 Proceedings of the 30th international conference on Automata, languages and programming
The approximation gap for the metric facility location problem is not yet closed
Operations Research Letters
The Fault-Tolerant Facility Allocation Problem
ISAAC '09 Proceedings of the 20th International Symposium on Algorithms and Computation
Lower-bounded facility location
ACM Transactions on Algorithms (TALG)
Incremental Facility Location Problem and Its Competitive Algorithms
Journal of Combinatorial Optimization
Theoretical Computer Science
An Optimal Bifactor Approximation Algorithm for the Metric Uncapacitated Facility Location Problem
SIAM Journal on Computing
Approximation Algorithms for Multicommodity Facility Location Problems
SIAM Journal on Discrete Mathematics
Multi-VPN optimization for scalable routing via relaying
IEEE/ACM Transactions on Networking (TON)
Minimizing movement in mobile facility location problems
ACM Transactions on Algorithms (TALG)
IPCO'11 Proceedings of the 15th international conference on Integer programming and combinatoral optimization
Approximation algorithms for single and multi-commodity connected facility location
IPCO'11 Proceedings of the 15th international conference on Integer programming and combinatoral optimization
The Reliable Facility Location Problem: Formulations, Heuristics, and Approximation Algorithms
INFORMS Journal on Computing
Approximation algorithm for the uniform bounded facility problem
FAW-AAIM'11 Proceedings of the 5th joint international frontiers in algorithmics, and 7th international conference on Algorithmic aspects in information and management
A 1.488 approximation algorithm for the uncapacitated facility location problem
ICALP'11 Proceedings of the 38th international conference on Automata, languages and programming - Volume Part II
Online Optimization with Uncertain Information
ACM Transactions on Algorithms (TALG)
Generalized machine activation problems
Proceedings of the twenty-second annual ACM-SIAM symposium on Discrete Algorithms
Proceedings of the twenty-second annual ACM-SIAM symposium on Discrete Algorithms
Fault-tolerant facility location: a randomized dependent LP-Rounding algorithm
IPCO'10 Proceedings of the 14th international conference on Integer Programming and Combinatorial Optimization
ALGOSENSORS'11 Proceedings of the 7th international conference on Algorithms for Sensor Systems, Wireless Ad Hoc Networks and Autonomous Mobile Entities
Assignment problem in content distribution networks: Unsplittable hard-capacitated facility location
ACM Transactions on Algorithms (TALG)
A dependent LP-rounding approach for the k-median problem
ICALP'12 Proceedings of the 39th international colloquium conference on Automata, Languages, and Programming - Volume Part I
A 1.488 approximation algorithm for the uncapacitated facility location problem
Information and Computation
Approximating k-median via pseudo-approximation
Proceedings of the forty-fifth annual ACM symposium on Theory of computing
QoS-aware placement of stream processing service
The Journal of Supercomputing
Approximation algorithm for uniform bounded facility location problem
Journal of Combinatorial Optimization
Approximating the reliable resource allocation problem using inverse dual fitting
CATS '12 Proceedings of the Eighteenth Computing: The Australasian Theory Symposium - Volume 128
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We consider the metric uncapacitated facility location problem(UFL). In this paper we modify the (1 + 2/e)-approximation algorithm of Chudak and Shmoys to obtain a new (1.6774,1.3738)- approximation algorithm for the UFL problem. Our linear programing rounding algorithm is the first one that touches the approximability limit curve $(\gamma_f, 1+2e^{-\gamma_f})$ established by Jain et al. As a consequence, we obtain the first optimal approximation algorithm for instances dominated by connection costs.Our new algorithm - when combined with a (1.11,1.7764)-approxima- tion algorithm proposed by Jain, Mahdian and Saberi, and later analyzed by Mahdian, Ye and Zhang - gives a 1.5-approximation algorithm for the metric UFL problem. This algorithm improves over the previously best known 1.52-approximation algorithm by Mahdian, Ye and Zhang, and it cuts the gap with the approximability lower bound by 1/3.The algorithm is also used to improve the approximation ratio for the 3-level version of the problem.