Title
Over-time measurement of triadic closure in coauthorship networks.
Abstract
Applying the concept of triadic closure to coauthorship networks means that scholars are likely to publish a joint paper if they have previously coauthored with the same people. Prior research has identified moderate to high (20 to 40%) closure rates; suggesting this mechanism is a reasonable explanation for tie formation between future coauthors. We show how calculating triadic closure based on prior operationalizations of closure, namely Newman’s measure for one-mode networks (NCC) and Opsahl’s measure for two-mode networks (OCC) may lead to higher amounts of closure compared to measuring closure over time via a metric that we introduce and test in this paper. Based on empirical experiments using four large-scale, longitudinal datasets, we find a lower bound of 1–3% closure rates and an upper bound of 4–7%. These results motivate research on new explanatory factors for the formation of coauthorship links.
Year
DOI
Venue
2017
10.1007/s13278-017-0428-3
Social Netw. Analys. Mining
Keywords
Field
DocType
Clustering coefficient,Transitivity,Triadic closure,Coauthorship networks
Publication,Upper and lower bounds,Triadic closure,Theoretical computer science,Artificial intelligence,Clustering coefficient,Mathematics,Transitive relation
Journal
Volume
Issue
ISSN
7
1
Social Network Analysis and Mining, 7(1), 1-12 (2017)
Citations 
PageRank 
References 
4
0.38
11
Authors
2
Name
Order
Citations
PageRank
Jinseok Kim1516.74
Jana Diesner221624.38