Finding hierarchy in directed online social networks

Mangesh Gupte, Pravin Shankar, Jing Li, S. Muthukrishnan, Liviu Iftode

Research output: Chapter in Book/Report/Conference proceedingConference contribution

87 Scopus citations

Abstract

Social hierarchy and stratification among humans is a well studied concept in sociology. The popularity of online social networks presents an opportunity to study social hierarchy for different types of networks and at different scales. We adopt the premise that people form connections in a social network based on their perceived social hierarchy; as a result, the edge directions in directed social networks can be leveraged to infer hierarchy. In this paper, we define a measure of hierarchy in a directed online social network, and present an efficient algorithm to compute this measure. We validate our measure using ground truth including Wikipedia notability score. We use this measure to study hierarchy in several directed online social networks including Twitter, Delicious, YouTube, Flickr, LiveJournal, and curated lists of several categories of people based on different occupations, and different organizations. Our experiments on different online social networks show how hierarchy emerges as we increase the size of the network. This is in contrast to random graphs, where the hierarchy decreases as the network size increases. Further, we show that the degree of stratification in a network increases very slowly as we increase the size of the graph.

Original languageEnglish (US)
Title of host publicationProceedings of the 20th International Conference on World Wide Web, WWW 2011
Pages557-566
Number of pages10
DOIs
StatePublished - 2011
Event20th International Conference on World Wide Web, WWW 2011 - Hyderabad, India
Duration: Mar 28 2011Apr 1 2011

Publication series

NameProceedings of the 20th International Conference on World Wide Web, WWW 2011

Other

Other20th International Conference on World Wide Web, WWW 2011
Country/TerritoryIndia
CityHyderabad
Period3/28/114/1/11

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Keywords

  • Hierarchy
  • Measure
  • Social networks

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