Sticky Brownian Rounding and its Applications to Constraint Satisfaction Problems
Sticky Brownian Rounding and its Applications to Constraint Satisfaction Problems
复制标题
粘性布朗舍入及其在约束满足问题中的应用
DOI:
10.1137/1.9781611975994.52
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Singh, M.
中科院分区:
文献类型:
--
作者:
Abbasi-Zadeh, S;Bansal, N;Guruganesh, G.;Nikolov, A;Schwartz, R;Singh, M.
Semidefinite programming is a powerful tool in the design and analysis of approximation algorithms for combinatorial optimization problems. In particular, the random hyperplane rounding method of Goemans and Williamson has been extensively studied for more than two decades, resulting in various extensions to the original technique and beautiful algorithms for a wide range of applications. Despite the fact that this approach yields tight approximation guarantees for some problems, e.g.,Max-Cut, for many others, e.g.,Max-SATandMax-DiCut, the tight approximation ratio is still unknown. One of the main reasons for this is the fact that very few techniques for rounding semi-definite relaxations are known.In this work, we present a new general and simple method for rounding semi-definite programs, based on Brownian motion. Our approach is inspired by recent results in algorithmic discrepancy theory. We develop and present tools for analyzing our new rounding algorithms, utilizing mathematical machinery from the theory of Brownian motion, complex analysis, and partial differential equations. Focusing on constraint satisfaction problems, we apply our method to several classical problems, includingMax-Cut,Max-2SAT, andMax-DiCut, and derive new algorithms that are competitive with the best known results. To illustrate the versatility and general applicability of our approach, we give new approximation algorithms for theMax-Cutproblem with side constraints that crucially utilizes measure concentration results for the Sticky Brownian Motion, a feature missing from hyperplane rounding and its generalizations.
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DOI:
10.1109/focs.2011.95
发表时间:
2011
期刊:
2011 IEEE 52nd Annual Symposium on Foundations of Computer Science
影响因子:
--
作者:
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通讯作者:
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DOI:
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2019
期刊:
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发表时间:
2009
期刊:
2009 50th Annual IEEE Symposium on Foundations of Computer Science
影响因子:
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通讯作者:
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发表时间:
2003
期刊:
Proceedings of the 14th International Symposium on Fundamentals of Computation Theory, Lecture Notes in Computer Science 2751, Springer 14
影响因子:
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作者:
Takao Asano
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