International Symposium on Graph Drawing and Network Visualization

Graph Drawing and Network Visualization pp 489-501 | Cite as

A Tale of Two Communities: Assessing Homophily in Node-Link Diagrams

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9411)

Abstract

Homophily is a concept in social network analysis that states that in a network a link is more probable, if the two individuals have a common characteristic. We study the question if an observer can assess homophily by looking at the node-link diagram of the network. We design an experiment that investigates three different layout algorithms and asks the users to estimate the degree of homophily in the displayed network. One of the layout algorithms is a classical force-directed method, the other two are designed to improve node distinction based on the common characteristic. We study how each of the three layout algorithms helps to get a fair estimate, and whether there is a tendency to over or underestimate the degree of homophily. The stimuli in our experiments use different network sizes and different proportions of the cluster sizes.

Notes

Acknowledgments

The authors would like to thank all anonymous volunteers who participated in the presented user study.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.giCentreCity University LondonLondonUK
  2. 2.LG Theoretische InformatikFernUniversität in HagenHagenGermany

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