Global Cardinality Constraints Make Approximating Some Max-2-CSPs Harder
Global Cardinality Constraints Make Approximating Some Max-2-CSPs Harder
复制标题
全局基数约束使得近似某些 Max-2-CSP 变得更加困难
DOI:
10.4230/lipics.approx-random.2019.24
复制
发表时间:
2019
期刊:
影响因子:
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通讯作者:
A. Stankovic
中科院分区:
文献类型:
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作者:
Per Austrin;A. Stankovic
Assuming the Unique Games Conjecture, we show that existing approximation algorithms for some Boolean Max-2-CSPs with cardinality constraints are optimal. In particular, we prove that Max-Cut with cardinality constraints is UG-hard to approximate within \approx 0.858, and that Max-2-Sat with cardinality constraints is UG-hard to approximate within \approx 0.929. In both cases, the previous best hardness results were the same as the hardness of the corresponding unconstrained Max-2-CSP (\approx 0.878 for Max-Cut, and \approx 0.940 for Max-2-Sat). The hardness for Max-2-Sat applies to monotone Max-2-Sat instances, meaning that we also obtain tight inapproximability for the Max-k-Vertex-Cover problem.
DOI:
10.1145/3055399.3055412
发表时间:
2016-11
期刊:
Proceedings of the 49th Annual ACM SIGACT Symposium on Theory of Computing
影响因子:
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作者:
Pasin Manurangsi
通讯作者:
Pasin Manurangsi