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arXiv 1507.08348cs.DS
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逼近密集最大2-CSP

Approximating Dense Max 2-CSPs

Pasin Manurangsi, Dana Moshkovitz

摘要:

在本文中,我们提出了一个多项式时间算法,近似足够高的价值最大2-CSP足够密集的图内$O(N^{\varepsilon})$的任何常数$\varepsilon > 0$的近似比。利用该算法,我们也取得了类似的结果,自由游戏,投影游戏上的足够密集的随机图,和Denminbi $k$ -子图问题的足够密集的最优解。然而,请注意,与最后一个算法具有类似保证的算法实际上是在我们的工作之前由Feige等人和Suzuki和Tokuyama发现的。此外,我们的想法,上述算法产生以下副产品:一个准多项式时间近似计划(QPTAS)的可满足的密集最大2-CSP具有更好的运行时间比已知的算法。

英文摘要:

In this paper, we present a polynomial-time algorithm that approximates sufficiently high-value Max 2-CSPs on sufficiently dense graphs to within $O(N^{\varepsilon})$ approximation ratio for any constant $\varepsilon > 0$. Using this algorithm, we also achieve similar results for free games, projection games on sufficiently dense random graphs, and the Densest $k$-Subgraph problem with sufficiently dense optimal solution. Note, however, that algorithms with similar guarantees to the last algorithm were in fact discovered prior to our work by Feige et al. and Suzuki and Tokuyama. In addition, our idea for the above algorithms yields the following by-product: a quasi-polynomial time approximation scheme (QPTAS) for satisfiable dense Max 2-CSPs with better running time than the known algorithms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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