i am a senior research scientist at microsoft research in new york city, where my work in the area of computational social science involves applications of statistics and machine learning to large-scale social data. i was previously a member of the social dynamics group at yahoo! research. i received my ph.d. from columbia university's physics department where i am an adjunct professor in the applied math department. please see my resume for more project and background information.
this site serves several purposes, from presenting and organizing my current research and teaching efforts to publishing code and tips that i hope others will find useful.
i bookmark lots of references on pinboard, occasionally tweet things, post random tidbits on tumblr, and share photos on flickr.
my latest geek tips, also available on twitter, tumblr, or as plain text:
20.11.09.17. rstats: format axes breaks with exponents in ggplot2 http://bit.ly/2zwB8aI
20.11.07.17. git: move a directory from one branch to another http://bit.ly/2iBlgM1
20.11.02.17. rstats: use predict(model, new_data, re.form=NA) to predict from fixed effects only in an hlm http://bit.ly/2ipbwo2
126.96.36.199. rstats: use pull to cleanly extract one tibble column as a vector http://bit.ly/2zmshaj
20.09.28.17. shell: use units to convert between or compute with different physical units http://bit.ly/2wXIgP9 (h/t @dggoldst)