Welcome to my homepage! I am a Research Fellow in the Medical School at Harvard University, where my supervisor is Prof. Nicholas Christakis. I do research in the field of Network Science, and my interests range from theoretical network problems to more applied problems dealing with large-scale social networks and, increasingly, social networks and health.

Prior to joining the Medical School, I spent a year at the Harvard Kennedy School as a Fulbright Visiting Scholar. I earlier held a Junior Research Fellowship at Oxford University for two years. I'm currently also a CABDyN Associate Fellow and an Associate Fellow at the Said Business School, Oxford University.

I obtained my Ph.D. at Helsinki University of Technology in 2006. My doctoral dissertation Complex networks in the study of financial and social systems received the Dissertation of the Year Prize from the university. The dissertation can be summarized as a haiku:

Common network structures?
Sometimes there,
in markets and in people too.

Regrettably, my haiku has not received any prize, yet.

I contribute to a blog on complexity and networks. Here is my  CV.

A small sample of a cell phone call network analyzed in articles A13 and A12.