arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2110.04574cs.DS
收藏

稠密图最大割的一种快速算法

A Faster Algorithm for Max Cut in Dense Graphs

Arijit Ghosh, Gopinath Mishra, Rahul Raychaudhury, Sayantan Sen

摘要:

我们设计了一个算法来逼近稠密图中的\emph{Max Cut}的大小。给定一个邻近参数$\varepsilon \in (0,1)$,我们的算法近似的$G$与$n$顶点的图\emph{Max Cut}的大小,在$\varepsilon n^2$的附加误差,与样本复杂度$\mathcal{O}(\frac{1}{\varepsilon^3} \log^2 \frac{1}{\varepsilon} \log \log \frac{1}{\varepsilon})$和查询复杂度$\mathcal{O}(\frac{1}{\varepsilon^4} \log^3 \frac{1}{\varepsilon} \log \log \frac{1}{\varepsilon})$。自从Goldreich,Goldwasser和Ron(JACM 98)给出了第一个样本复杂度为$\mathcal{O}(\frac{1}{\varepsilon^5}\log \frac{1}{\varepsilon})$,查询复杂度为$\mathcal{O}(\frac{1}{\varepsilon^7}\log^2 \frac{1}{\varepsilon})$的算法以来,已经有一些努力采用来自不同领域的技术,重点是提高样本和查询复杂度。我们的工作使得第一次改进的样本复杂度以及查询复杂度超过十年后,从以前的最佳结果的Alon,Vega,Kannan和Karpinski(JCSS 03)和Mathieu和Schudy(SODA 08),分别与样本复杂度$\mathcal{O}\left(\frac{1}{{\varepsilon}^4}{\log}\frac{1}{\varepsilon}\right)$。我们还想指出,这个问题的最佳时间复杂度是由Alon,Vega,Karpinski和Kannan(JCSS 03)提出的。通过将他们的结果与Arora、Karger和Karpinski(STOC 95)的近似技术相结合,他们得到了时间复杂度为$2^{\mathcal{O}(\frac{1}{{\varepsilon}^2} \log \frac{1}{\varepsilon})}$的算法。在这项工作中,我们已经改进了进一步的$2^{\mathcal{O}(\frac{1}{\varepsilon} \log \frac{1}{\varepsilon} )}$。

英文摘要:

We design an algorithm for approximating the size of \emph{Max Cut} in dense graphs. Given a proximity parameter $\varepsilon \in (0,1)$, our algorithm approximates the size of \emph{Max Cut} of a graph $G$ with $n$ vertices, within an additive error of $\varepsilon n^2$, with sample complexity $\mathcal{O}(\frac{1}{\varepsilon^3} \log^2 \frac{1}{\varepsilon} \log \log \frac{1}{\varepsilon})$ and query complexity of $\mathcal{O}(\frac{1}{\varepsilon^4} \log^3 \frac{1}{\varepsilon} \log \log \frac{1}{\varepsilon})$. Since Goldreich, Goldwasser and Ron (JACM 98) gave the first algorithm with sample complexity $\mathcal{O}(\frac{1}{\varepsilon^5}\log \frac{1}{\varepsilon})$ and query complexity of $\mathcal{O}(\frac{1}{\varepsilon^7}\log^2 \frac{1}{\varepsilon})$, there have been several efforts employing techniques from diverse areas with a focus on improving the sample and query complexities. Our work makes the first improvement in the sample complexity as well as query complexity after more than a decade from the previous best results of Alon, Vega, Kannan and Karpinski (JCSS 03) and of Mathieu and Schudy (SODA 08) respectively, both with sample complexity $\mathcal{O}\left(\frac{1}{{\varepsilon}^4}{\log}\frac{1}{\varepsilon}\right)$. We also want to note that the best time complexity of this problem was by Alon, Vega, Karpinski and Kannan (JCSS 03). By combining their result with an approximation technique by Arora, Karger and Karpinski (STOC 95), they obtained an algorithm with time complexity of $2^{\mathcal{O}(\frac{1}{{\varepsilon}^2} \log \frac{1}{\varepsilon})}$. In this work, we have improved this further to $2^{\mathcal{O}(\frac{1}{\varepsilon} \log \frac{1}{\varepsilon} )}$.

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。

↑