i am a 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 delicious, 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:
20.03.05.15. rstats: use broom to get tidy dataframes summarizing models and predictions http://bit.ly/1FfnxzY
20.02.26.15. rstats: use variables within dplyr function calls (e.g., for column names) http://bit.ly/1Gy7oXf
20.02.06.15. git: use git rev-parse --show-toplevel to get the absolute path of the repo base http://bit.ly/1Ik1dL2
20.02.06.15. git: get the path of a file relative to the repo with git ls-tree http://bit.ly/1yRtPBC
20.02.03.15. rstats: data wrangling cheatsheet from @hadleywickham http://bit.ly/1zQhrb4 (h/t @solomonmg)