Format

Send to

Choose Destination
PLoS One. 2011 Apr 5;6(4):e16939. doi: 10.1371/journal.pone.0016939.

Geographic constraints on social network groups.

Author information

1
Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts, United States of America. onnela@med.harvard.edu

Abstract

Social groups are fundamental building blocks of human societies. While our social interactions have always been constrained by geography, it has been impossible, due to practical difficulties, to evaluate the nature of this restriction on social group structure. We construct a social network of individuals whose most frequent geographical locations are also known. We also classify the individuals into groups according to a community detection algorithm. We study the variation of geographical span for social groups of varying sizes, and explore the relationship between topological positions and geographic positions of their members. We find that small social groups are geographically very tight, but become much more clumped when the group size exceeds about 30 members. Also, we find no correlation between the topological positions and geographic positions of individuals within network communities. These results suggest that spreading processes face distinct structural and spatial constraints.

PMID:
21483665
PMCID:
PMC3071679
DOI:
10.1371/journal.pone.0016939
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Public Library of Science Icon for PubMed Central
Loading ...
Support Center