I am a Senior Principal Researcher at Microsoft Research in New York City, where my work in the area of computational social science involves applications of novel computational tools and statistical methods to large-scale social data.

I am also an Adjunct Assistant Professor in Columbia University’s Applied Mathematics 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 . Before that I received my Ph.D. from Columbia University’s Physics Department . See my CV for more on my background and experience.

You can find more information on my research and teaching on this site.

I also tweet occasionally, keep an extensive set of online bookmarks , and maintain a log of handy one-line tips .