Eigenvector centrality is a standard network analysis tool for determining the importance of (or ranking of) entities in a connected system that is represented by a graph. However, many complex systems and datasets have natural multi-way interactions that are more faithfully modeled by a hypergraph. Here we extend the notion of graph eigenvector centrality to uniform hypergraphs. Traditional graph eigenvector centralities are given by a positive eigenvector of the adjacency matrix, which is guaranteed to exist by the Perron-Frobenius theorem under some mild conditions. The natural representation of a hypergraph is a hypermatrix (colloquially, a tensor). Using recently established Perron-Frobenius theory for tensors, we develop three tensor eigenvectors centralities for hypergraphs, each with different interpretations. We show that these centralities can reveal different information on real-world data by analyzing hypergraphs constructed from n-gram frequencies, co-tagging on stack exchange, and drug combinations observed in patient emergency room visits.
Generalizing Perron--Frobenius theory and eigenvector-based centralities to networks with complex edge weights
Center for Systems Biology Dresden（德累斯顿系统生物学中心）；Max Planck Institute for the Physics of Complex Systems（马克斯·普朗克复杂系统物理研究所）；Max-Planck Institute of Molecular Cell Biology and Genetics（马克斯·普朗克分子细胞生物学与遗传学研究所）；TU Dresden（德累斯顿工业大学）；University of California, Los Angeles（加州大学洛杉矶分校）；Sante Fe Institute（圣塔菲研究所）；Frankfurt School of Finance and Management（法兰克福金融管理学院）；University of Florida（佛罗里达大学）
A two-steps tensor eigenvector centrality for nodes and hyperedges in hypergraphs
School of Mathematical Sciences, Harbin Engineering University（哈尔滨工程大学数学科学学院）；Academy for Advanced Interdisciplinary Studies, Northeast Normal University（东北师范大学前沿交叉科学研究院）
California State University, Fullerton（加州州立大学富勒顿分校）；USC Information Sciences Institute（南加州大学信息科学研究所）；Claremont Graduate University（克莱蒙特研究生大学）；HP Labs（惠普实验室）
About the Discriminant Power of the Subgraph Centrality and Other Centrality Measures About the Discriminant Power of the Subgraph Centrality and Other Centrality Measures(Working paper)
