i am a principal 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 am also an adjunct assistant professor in columbia university's applied math department and i run the microsoft research data science summer school to promote diversity in computer science. i was previously a member of the social dynamics group at yahoo! research. i received my ph.d. from columbia university's physics department. see my curriculum vitae for more 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:
126.96.36.199. shell: convert a movie to an animated gif with ffmpeg and imagemagick http://bit.ly/2QRs6zA
188.8.131.52. powerpoint: jump directly to a slide by typing its number + enter while presenting (h/t @dggoldst)
20.11.02.19. latex: set frame counter manually to avoid counting backup slides in beamer http://bit.ly/2JM9igW
184.108.40.206. shell: find symbolic links with find . -type -ls or ls -lR | grep ^l http://bit.ly/31A259S
20.10.08.19. rstats: knit a regular R script to html with knitr::stitch("script.R") http://bit.ly/2IxcT1N