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Chin. Phys. B, 2018, Vol. 27(10): 100504    DOI: 10.1088/1674-1056/27/10/100504
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Detecting overlapping communities based on vital nodes in complex networks

Xingyuan Wang(王兴元)1,2, Yu Wang(王宇)2, Xiaomeng Qin(秦小蒙)2, Rui Li(李睿)3, Justine Eustace2
1 School of Information Science and Technology, Dalian Maritime University, Dalian 116026, China;
2 Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China;
3 School of Mathematical Sciences, Dalian University of Technology, Dalian 116024, China
Abstract  

Detection of community structures in the complex networks is significant to understand the network structures and analyze the network properties. However, it is still a problem on how to select initial seeds as well as to determine the number of communities. In this paper, we proposed the detecting overlapping communities based on vital nodes algorithm (DOCBVA), an algorithm based on vital nodes and initial seeds to detect overlapping communities. First, through some screening method, we find the vital nodes and then the seed communities through the pretreatment of vital nodes. This process differs from most existing methods, and the speed is faster. Then the seeds will be extended. We also adopt a new parameter of attribution degree to extend the seeds and find the overlapping communities. Finally, the remaining nodes that have not been processed in the first two steps will be reprocessed. The number of communities is likely to change until the end of algorithm. The experimental results using some real-world network data and artificial network data are satisfactory and can prove the superiority of the DOCBVA algorithm.

Keywords:  complex networks      overlapping communities      vital nodes      seed communities  
Received:  21 March 2018      Revised:  09 August 2018      Published:  05 October 2018
PACS:  05.10.-a (Computational methods in statistical physics and nonlinear dynamics)  
  02.10.Ox (Combinatorics; graph theory)  
Fund: 

Project supported by the National Natural Science Foundation of China (Grant Nos. 61672124, 61370145, 61173183, and 61503375) and the Password Theory Project of the 13th Five-Year Plan National Cryptography Development Fund, China (Grant No. MMJJ20170203).

Corresponding Authors:  Xingyuan Wang     E-mail:  wangxy@dlut.edu.cn

Cite this article: 

Xingyuan Wang(王兴元), Yu Wang(王宇), Xiaomeng Qin(秦小蒙), Rui Li(李睿), Justine Eustace Detecting overlapping communities based on vital nodes in complex networks 2018 Chin. Phys. B 27 100504

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