Community detection using spectral clustering on sparse geosocial data

  title={Community detection using spectral clustering on sparse geosocial data},
  author={Yves van Gennip and Blake Hunter and Raymond Ahn and Peter Elliott and Kyle Luh and Megan Halvorson and Shannon Reid and Matthew Valasik and James Wo and George E. Tita and Andrea L. Bertozzi and P. Jeffrey Brantingham},
  journal={SIAM Journal of Applied Mathematics},
In this article we identify social communities among gang members in the Hollenbeck policing district in Los Angeles, based on sparse observations of a combination of social interactions and geographic locations of the individuals. This information, coming from LAPD Field Interview cards, is used to construct a similarity graph for the individuals. We use spectral clustering to identify clusters in the graph, corresponding to communities in Hollenbeck, and compare these with the LAPD’s… CONTINUE READING
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