Journal of the Korean Society for information Management (정보관리학회지)

Korean Society for Information Management (한국정보관리학회)
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A Comparison Study on the Weighted Network Centrality Measures of tnet and WNET

tnet과 WNET의 가중 네트워크 중심성 지수 비교 연구

  • 이재윤 (명지대학교 문헌정보학과)
  • Received : 2013.11.30
  • Accepted : 2013.12.15
  • Published : 2013.12.30
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Abstract

This study compared and analyzed weighted network centrality measures supported by Opsahl's tnet and Lee's WNET, which are free softwares for weighted network analysis. Three node centrality measures including weighted degree, weighted closeness, and weighted betweenness are supported by tnet, and four node centrality measures including nearest neighbor centrality, mean association, mean profile association, triangle betweenness centrality are supported by WNET. An experimental analysis carried out on artificial network data showed tnet's high sensitiveness on linear transformations of link weights, however, WNET's centrality measures were insensitive to linear transformations. Seven centrality measures from both tools, tnet and WNET, were calculated on six real network datasets. The results showed the characteristics of weighted network centrality measures of tnet and WNET, and the relationships between them were also discussed.

이 연구에서는 공개된 가중 네트워크 분석용 소프트웨어인 Opsahl의 tnet과 이재윤의 WNET에서 지원하는 가중 네트워크 중심성 지수를 비교 분석해보았다. tnet은 가중 연결정도중심성, 가중 근접중심성, 가중 매개중심성을 지원하고, WNET은 최근접이웃중심성, 평균연관성, 평균프로파일연관성, 삼각매개중심성을 지원한다. 가상 데이터를 대상으로 한 분석에서 tnet의 중심성 지수는 링크 가중치의 선형변화에 민감한 반면 WNET의 중심성 지수는 선형 변화에 영향을 받지 않았다. 실제 네트워크 6종을 대상으로 가중 네트워크 중심성을 측정하고 결과를 비교하여 두 소프트웨어의 가중 네트워크 중심성지수들의 특징을 파악하고 중심성 지수 간 관계를 살펴보았다.

Keywords

Acknowledgement

Supported by : 명지대학교

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