Lyapunov function approach for approximation algorithm design and analysis: with applications in submodular maximization
Lyapunov function approach for approximation algorithm design and analysis: with applications in submodular maximization
复制标题
用于近似算法设计和分析的李亚普诺夫函数方法:在子模最大化中的应用
DOI:
10.48550/arxiv.2205.12442
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
D. Du
中科院分区:
文献类型:
--
作者:
D. Du
We propose a two-phase systematical framework for approximation algorithm design and analysis via Lyapunov function. The first phase consists of using Lyapunov function as an input and outputs a continuous-time approximation algorithm with a provable approximation ratio. The second phase then converts this continuous-time algorithm to a discrete-time algorithm with almost the same approximation ratio along with provable time complexity. One distinctive feature of our framework is that we only need to know the parametric form of the Lyapunov function whose complete specification will not be decided until the end of the first phase by maximizing the approximation ratio of the continuous-time algorithm. Some immediate benefits of the Lyapunov function approach include: (i) unifying many existing algorithms; (ii) providing a guideline to design and analyze new algorithms; and (iii) offering new perspectives to potentially improve existing algorithms. We use various submodular maximization problems as running examples to illustrate our framework.
DOI:
10.1137/1.9781611977073.65
发表时间:
2022
期刊:
2022 ACM-SIAM Symposium on Discrete Algorithms
影响因子:
--
作者:
Cohen-Addad, Vincent;Gupta, Anupam;Hu, Lunjia;Oh, Hoon;Saulpic, David
通讯作者:
Saulpic, David
影响因子:
3.1
作者:
Diakonikolas, Jelena;Orecchia, Lorenzo
通讯作者:
Orecchia, Lorenzo