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:
20.08.27.15. rstats: hide all ticks, text, border, grid, etc in ggplot2 http://bit.ly/1LD2yhA
20.08.07.15. latex: use the etoolbox package to remove first page permission blocks http://bit.ly/1Pb9xN3
20.08.07.15. rstats: even better, change ggplot2 legend titles with labs(fill="new title") (h/t @0x00BAB10C)
20.08.07.15. rstats: modify ggplot2 legend titles with guide(fill=guide_legend(title="new title")) http://bit.ly/1KUsfqO
20.08.07.15. rstats: reverse the order of a ggplot2 legend with scale(guide = guide_legend(reverse=TRUE)) http://bit.ly/1KUsfqO