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:
20.07.21.15. rstats: change a legend title with scale_...(name="new title") http://bit.ly/1Ih6p0E
20.06.30.15. rstats: use ggpairs from the GGally package for better pairwise plots http://stackoverflow.com/a/12047554
20.06.14.15. rstats: use V(g)$name to access node names with igraph http://bit.ly/1BcqlRk
20.05.07.15. latex: use the footmisc package to comma separate multiple footnotes http://bit.ly/1F1PlKt
20.04.07.15. linux: use lshw to get system hardware details http://bit.ly/1O4OE5Q