The impact of partially missing communities on the reliability of centrality measures
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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Complex Networks & Their Applications VI: Proceedings of Complex Networks 2017 (The 6th International Conference on Complex Networks and Their Applications). Band 1 Springer Verlag, 2018. S. 41-52 (Studies in Computational Intelligence; Band 689).
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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TY - CHAP
T1 - The impact of partially missing communities on the reliability of centrality measures
AU - Martin, Christoph
N1 - Conference code: 6
PY - 2018
Y1 - 2018
N2 - Network data is usually not error-free, and the absence of some nodes is a very common type of measurement error. Studies have shown that the reliability of centrality measures is severely affected by missing nodes. This paper investigates the reliability of centrality measures when missing nodes are likely to belong to the same community. We study the behavior of five commonly used centrality measures in uniform and scale-free networks in various error scenarios. We find that centrality measures are generally more reliable when missing nodes are likely to belong to the same community than in cases in which nodes are missing uniformly at random. In scale-free networks, the betweenness centrality becomes, however, less reliable when missing nodes are more likely to belong to the same community. Moreover, centrality measures in scale-free networks are more reliable in networks with stronger community structure. In contrast, we do not observe this effect for uniform networks. Our observations suggest that the impact of missing nodes on the reliability of centrality measures might not be as severe as the literature suggests.
AB - Network data is usually not error-free, and the absence of some nodes is a very common type of measurement error. Studies have shown that the reliability of centrality measures is severely affected by missing nodes. This paper investigates the reliability of centrality measures when missing nodes are likely to belong to the same community. We study the behavior of five commonly used centrality measures in uniform and scale-free networks in various error scenarios. We find that centrality measures are generally more reliable when missing nodes are likely to belong to the same community than in cases in which nodes are missing uniformly at random. In scale-free networks, the betweenness centrality becomes, however, less reliable when missing nodes are more likely to belong to the same community. Moreover, centrality measures in scale-free networks are more reliable in networks with stronger community structure. In contrast, we do not observe this effect for uniform networks. Our observations suggest that the impact of missing nodes on the reliability of centrality measures might not be as severe as the literature suggests.
KW - Business informatics
UR - http://www.scopus.com/inward/record.url?scp=85036630496&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-72150-7_4
DO - 10.1007/978-3-319-72150-7_4
M3 - Article in conference proceedings
AN - SCOPUS:85036630496
SN - 978-3-319-72149-1
VL - 1
T3 - Studies in Computational Intelligence
SP - 41
EP - 52
BT - Complex Networks & Their Applications VI
PB - Springer Verlag
T2 - 6th International Conference on Complex Networks and Their Applications - Complex Networks 2017
Y2 - 29 November 2017 through 1 December 2017
ER -