Fast and Accurate Computation of Role Similarity via Vertex Centrality

  • Longjie LiEmail author
  • Lvjian Qian
  • Victor E. Lee
  • Mingwei Leng
  • Mei Chen
  • Xiaoyun Chen
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9098)


There is growing evidence that vertex similarity based on structural context is the basis of many link mining applications in complex networks. As a special case of vertex similarity, role similarity which measures the similarity between two vertices according to their roles in a network can facilitate the search for peer vertices. In RoleSim, graph automorphism is encapsulated into the role similarity measure. As a real-valued role similarity, RoleSim shows good interpretative power in experiments. However, RoleSim is not sufficient for some applications since it is very time-consuming and may assign unreasonable similarities in some cases. In this paper, we present CentSim, a novel role similarity metric which obeys all axiomatic properties for role similarity. CentSim can quickly calculate the role similarity between any two vertices by directly comparing their corresponding centralities. The experimental results demonstrate that CentSim achieves best performance in terms of efficiency and effectiveness compared with the state-of-the-art.


Complex network Vertex similarity Role similarity Vertex centrality Similarity metric 


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Longjie Li
    • 1
    Email author
  • Lvjian Qian
    • 1
  • Victor E. Lee
    • 2
  • Mingwei Leng
    • 3
  • Mei Chen
    • 1
    • 4
  • Xiaoyun Chen
    • 1
  1. 1.School of Information Science and EngineeringLanzhou UniversityLanzhouChina
  2. 2.Department of Mathematics and Computer ScienceJohn Carroll UniversityUniversity HeightsUSA
  3. 3.School of Mathematics and Computer ScienceShangrao Normal UniversityShangraoChina
  4. 4.School of Electronic and Information EngineeringLanhou Jiaotong UniversityLanzhouChina

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