arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1809.08154cs.CCcs.DM
收藏

图同构的硬例子构造

Constructing Hard Examples for Graph Isomorphism

Anuj Dawar, Kashif Khan

摘要:

我们描述了一种生成图的方法,为实际的图同构测试提供了困难的例子。我们首先给出了理论结构,表明我们可以有一个家庭的图没有任何非平凡的自同构,也有高Weisfeiler-Leman维数。该构造基于随机3XOR公式的性质。我们描述了如何将这样的公式转换成具有高概率的所需属性的图。我们通过实验验证了该方法。我们构造随机公式,并使用SAT求解器对其进行验证,以筛选合适的公式,然后将其转换为图形。实验结果表明,所得到的图形确实提供了硬的例子,匹配已知的最难的基准图同构。

英文摘要:

We describe a method for generating graphs that provide difficult examples for practical Graph Isomorphism testers. We first give the theoretical construction, showing that we can have a family of graphs without any non-trivial automorphisms which also have high Weisfeiler-Leman dimension. The construction is based on properties of random 3XOR-formulas. We describe how to convert such a formula into a graph which has the desired properties with high probability. We validate the method by an experimental implementation. We construct random formulas and validate them with a SAT solver to filter through suitable ones, and then convert them into graphs. Experimental results demonstrate that the resulting graphs do provide hard examples that match the hardest known benchmarks for graph isomorphism.

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。

↑