Advanced search
Start date
Betweenand


Spectral Algorithm for Line Graphs to Find Overlapping Communities in Social Networks

Full text
Author(s):
Tautenhain, Camila P. S. ; Nascimento, Maria C. V. ; Rocha, AP ; Steels, L ; VanDenHerik, J
Total Authors: 5
Document type: Journal article
Source: PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON AGENTS AND ARTIFICIAL INTELLIGENCE (ICAART), VOL 2; v. N/A, p. 12-pg., 2019-01-01.
Abstract

A great deal of community detection communities is based on the maximization of the measure known as modularity. There is a dearth of literature on overlapping community detection algorithms, in spite of the importance of the applications and the overwhelming number of community detection algorithms yet proposed. To this end, one of the suggestions in the literature consists of partitioning the set of edges into communities, also known as link partitions, by applying community detection algorithms to line graphs. In line with this, in this paper, overlapping vertex communities are obtained from link partitions by a method that selects the communities of the edges that represent the highest modularity gain. We also introduce a spectral algorithm to find link partitions from line graphs. We show that the modularity of communities in line graphs is equivalent to the adaptation of modularity of communities in the original graphs, when considering the non-backtracking matrix instead of the adjacency matrix in its formula. The results of the experiments carried out with overlapping community detection algorithms showed that the proposed method is competitive with state-of-the-art algorithms. (AU)

FAPESP's process: 15/21660-4 - Hibridizing heuristic and exact methods to approach combinatorial optimization problems
Grantee:Mariá Cristina Vasconcelos Nascimento Rosset
Support Opportunities: Regular Research Grants
FAPESP's process: 16/22688-2 - Spectral Theory for Analysing Graph Clustering
Grantee:Camila Pereira dos Santos Tautenhain
Support Opportunities: Scholarships in Brazil - Doctorate