Title
Emergence of core-periphery structure from local node dominance in social networks
Abstract
There has been growing evidence recently for the view that social networks can be divided into a well connected core, and a sparse periphery. This paper describes how such a global description can be obtained from local "dominance" relationships between vertices, to naturally yield a distributed algorithm for such a decomposition. It is shown that the resulting core describes the global structure of the network, while also preserving shortest paths, and displaying "expander-like" properties. Moreover, the periphery obtained from this decomposition consists of a large number of connected components, which can be used to identify communities in the network. These are used for a 'divide-and-conquer' strategy for community detection, where the peripheral components are obtained as a pre-processing step to identify the small sets most likely to contain communities. The method is illustrated using a real world network (DBLP co-authorship network), with ground-truth communities.
Year
Venue
Keywords
2015
European Signal Processing Conference
Social networks,core-periphery structure,community detection,homology,local-to-global
Field
DocType
ISSN
Dynamic network analysis,Global structure,Social network,Vertex (geometry),Computer science,Network topology,Signal processing algorithms,Distributed computing
Conference
2076-1465
Citations 
PageRank 
References 
0
0.34
16
Authors
3
Name
Order
Citations
PageRank
Jennifer Gamble141.15
Harish Chintakunta2366.05
Hamid Krim352059.69