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:
20.02.25.17. git: use git log --diff-filter=D --summary to find deleted files http://bit.ly/2mhsNno
20.02.11.17. search: advanced search operators http://bit.ly/2kwUFz9 http://bit.ly/2kwVcB9 (h/t @dggoldst)
20.02.10.17. search: use the AROUND keyword to find documents with words near each other http://bit.ly/2kd9ScN (h/t @dggoldst)
20.02.09.17. rstats: better yet, use map_df(files, read_csv) to read multiple files (h/t @hadleywickham)
20.02.09.17. rstats: use files %>% map(read_csv) %>% reduce(rbind) to read multiple files into a dataframe http://bit.ly/2kyah8d