A Fast Approximation Algorithm for Computing the Frequencies of Subgraphs in a Given Graph
A Fast Approximation Algorithm for Computing the Frequencies of Subgraphs in a Given Graph
复制标题
计算给定图中子图频率的快速逼近算法
DOI:
10.1137/s0097539793247634
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发表时间:
1995
期刊:
影响因子:
--
通讯作者:
V. Rödl
中科院分区:
文献类型:
--
作者:
R. Duke;H. Lefmann;V. Rödl
In this paper we give an algorithm which, given a labeled graph on $n$ vertices and a list of all labeled graphs on $k$ vertices, provides for each graph $H$ of this list an approximation to the number of induced copies of $H$ in $G$ with total error small. This algorithm has running time $O(n^{{1 \over \log \log n}} \cdot M(n))$, where $M(n)$ is the time needed to square a $n$ by $n$ matrix with 0, 1-entries over the integers. The main tool in designing this algorithm is a variant of the regularity lemma of Szemeredi.