We present a dynamic model of social network formation in which a fixed number of agents
interact in overlapping social groups. We derive several results on the formation of links in …

In this work we study diffusion in networks with community structure. We first replicate and
extend work on networks with non-overlapping community structure. We then study diffusion …

Community structure identification has attracted considerable attention in recent years and
there has been many algorithms proposed to detect community structures in complex …

Many real networks exhibit overlapping community structures. Recent studies have been
performed that analyze the impact of overlapping community structure on information …

This thesis comprises four essays in the economics of networks and market design. The
common thread in all these essays is the presence of complementarities or externalities …

Today two keywords more and more frequently recur over the Internet: Peer-to-Peer (P2P)
and social networks. P2P, in all of its different declinations, represents a widely-adopted …