arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.06084cs.DScs.SI
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顶点权依赖于边的超图割

Hypergraph Cuts with Edge-Dependent Vertex Weights

Yu Zhu, Santiago Segarra

摘要:

我们开发了一个框架,将边相关的顶点权重(EDVWs)到超图最小的s-t切割问题。这些权重能够反映超边内顶点的不同重要性,从而导致更好地表征切割属性。更确切地说,我们引入了一类新的超边分裂函数,我们称之为EDVWS为基础的,其中分裂超边的惩罚只取决于与分裂的每一侧的顶点相关联的EDVWS的总和。此外,我们提供了一种方法来构建子模EDVWS为基础的分裂功能,并证明了超图配备这样的分裂功能可以减少到一个图共享相同的切割性能。在这种情况下,超图最小s-t割问题可以使用图最小s-t割问题的成熟解决方案来解决。此外,我们表明,现有的稀疏化技术可以很容易地扩展到我们的情况下,使减少图更小,更稀疏,从而进一步加快算法应用到减少图。使用真实数据的数值实验表明,我们提出的基于EDVWS的分裂函数的有效性相比,全或无分裂函数和基数为基础的分裂函数通常采用现有的工作。

英文摘要:

We develop a framework for incorporating edge-dependent vertex weights (EDVWs) into the hypergraph minimum s-t cut problem. These weights are able to reflect different importance of vertices within a hyperedge, thus leading to better characterized cut properties. More precisely, we introduce a new class of hyperedge splitting functions that we call EDVWs-based, where the penalty of splitting a hyperedge depends only on the sum of EDVWs associated with the vertices on each side of the split. Moreover, we provide a way to construct submodular EDVWs-based splitting functions and prove that a hypergraph equipped with such splitting functions can be reduced to a graph sharing the same cut properties. In this case, the hypergraph minimum s-t cut problem can be solved using well-developed solutions to the graph minimum s-t cut problem. In addition, we show that an existing sparsification technique can be easily extended to our case and makes the reduced graph smaller and sparser, thus further accelerating the algorithms applied to the reduced graph. Numerical experiments using real-world data demonstrate the effectiveness of our proposed EDVWs-based splitting functions in comparison with the all-or-nothing splitting function and cardinality-based splitting functions commonly adopted in existing work.

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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