Please use this identifier to cite or link to this item: http://hdl.handle.net/11718/25441
Title: Gravity and depth of social media networks
Authors: Guha, Pritha
Bansal, Avijit
Guha, Apratim
Chakrabarti, Anindya S.
Issue Date: 27-May-2021
Publisher: Oxford University Press
Citation: Guha, P., Bansal, A., Guha, A., & Chakrabarti, A. S. (2021). Gravity and depth of social media networks. Journal of Complex Networks, 9(2), cnab016.
Abstract: Structures of social media networks provide a composite view of dyadic connectivity across social actors, which reveals the spread of local and global influences of those actors in the network. Although social media network is a construct inferred from online activities, an underlying feature is that the actors also possess physical locational characteristics. Using a unique dataset from Facebook that provides a snapshot of the complete enumeration of county-to-county connectivity in the USA (in April 2016), we exploit these two dimensions viz. online connectivity and geographic distance between the counties, to establish a mapping between the two. We document two major results. First, social connectivity wanes as physical distance increases between county-pairs, signifying gravity-like behaviour found in economic activities like trade and migration. Two, a geometric projection of the network on a lower-dimensional space allows us to quantify depth of the nodes in the network with a well-defined metric. Clustering of this projected network reveals that the counties belonging to the same cluster tend to exhibit geographic proximity, a finding we quantify with regression-based analysis as well. Thus, our analysis of the social media networks demonstrates a unique relationship between physical spatial clustering and node connectivity-based clustering. Our work provides a novel characterization of geometric distance in the study of social network analysis, linking abstract network topology with its statistical properties.
URI: https://doi.org/10.1093/comnet/cnab016
http://hdl.handle.net/11718/25441
Appears in Collections:Journal Articles

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