We develop a dynamic version of the primal-dual method for optimization problems, and apply it to obtain the following results. (1) For the dynamic set-cover problem, we maintain an O(f2)-approximately optimal solution in O(f⋅log⁡(m+n)) amortized update time, where f is the maximum “frequency” of an element, n is the number of sets, and m is the maximum number of elements in the universe at any point in time. (2) For the dynamic b-matching problem, we maintain an O(1)-approximately optimal solution in O(log3⁡n) amortized update time, where n is the number of nodes in the graph.

Bhattacharya, S., Henzinger, M., Italiano, G. (2018). Dynamic algorithms via the primal-dual method. INFORMATION AND COMPUTATION, 261, 219-239 [10.1016/j.ic.2018.02.005].

Dynamic algorithms via the primal-dual method

Italiano, GF
2018-01-01

Abstract

We develop a dynamic version of the primal-dual method for optimization problems, and apply it to obtain the following results. (1) For the dynamic set-cover problem, we maintain an O(f2)-approximately optimal solution in O(f⋅log⁡(m+n)) amortized update time, where f is the maximum “frequency” of an element, n is the number of sets, and m is the maximum number of elements in the universe at any point in time. (2) For the dynamic b-matching problem, we maintain an O(1)-approximately optimal solution in O(log3⁡n) amortized update time, where n is the number of nodes in the graph.
2018
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/05 - SISTEMI DI ELABORAZIONE DELLE INFORMAZIONI
English
Data structures; dynamic algorithms; primal-dual method; theoretical computer science; information systems; computer science applications1707; computer vision and pattern recognition; computational theory and mathematics
http://www.elsevier.com/inca/publications/store/6/2/2/8/4/4/index.htt
Bhattacharya, S., Henzinger, M., Italiano, G. (2018). Dynamic algorithms via the primal-dual method. INFORMATION AND COMPUTATION, 261, 219-239 [10.1016/j.ic.2018.02.005].
Bhattacharya, S; Henzinger, M; Italiano, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/201090
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