Supplementary Materials for "Common Growth Patterns for Regional Social Networks: A Point Process Approach" by T. Wang and S.I. Resnick

SEPP_Fcn.R: Generic functions for fitting a SEPP with an exponential triggering function.

Datasets: We include all four datasets discussed in the paper. They are downloaded from KONECT (http://konect.cc/networks/).

1. Facebook Wall Posts: Data available at http://konect.cc/networks/facebook-wosn-wall/.

fb_exp_rds.R: Fit the SEPP model to the Facebook data from 2005-01-01 to 2007-06-01, and compute the transformed times.

fb_SEPP.R: Run KS tests based on fitted models.

fb_acf.pdf: ACF plots of transformed inter-event times.

2. Dutch Wikipedia Talk: Raw data available at http://konect.cc/networks/wiki_talk_nl/.

wikiNoBotRl.RData: Cleaned data from Wan et al. (2017).

wiki_nl_expfit.R: Fit the SEPP model to the Dutch Wiki Talk data: (1) 2003-01-01 to 2005-12-31 and (2) 2006-01-01 to 2006-12-31, and compute the transformed times.

wiki_nl_SEPP.R: Run KS tests based on fitted models.

nl_acf.pdf: ACF plots of transformed inter-event times in the first 46 time windows, i.e. from 2003-01-01 to 2005-02-09.

3. German Wikipedia Talk: Raw data available at http://konect.cc/networks/wiki_talk_de/.

wiki_de_exp_Rds.R:

(1) Clean the data after removing admin accounts and bots.

(2) Fit the SEPP model to the German Wiki Talk data from 2003-01-01 to 2004-12-31, and compute the transformed times.

wiki_de_SEPP.R: Run KS tests based on fitted models.

4. Math Overflow: Data available at http://konect.cc/networks/sx-mathoverflow/.

math_exp_rds.R: Fit the SEPP model to the Math Overflow data from 2009-10-01 to 2010-02-28, and compute the transformed times.

math.R: Run KS tests based on fitted models.

math_sepp_acf.pdf: ACF plots for transformed inter-event times after fitting the SEPP model to the Math Overflow data from 2009-10-01 to 2010-02-28.

math_nhpp_acf.pdf: ACF plots for inter-event times after fitting the NHPP model to the Math Overflow data from 2011-01-01 to 2011-02-28.