This paper investigates opinion dynamics and social influence in directed communication networks. We study the …

then bring the model to the data by using a very detailed dataset of adolescent friendship networks. A novel social network … Networks ; Linear-in-means Model ; Spatial Autoregressive Model ; Social Norms …

of link formation with the middlemen. -- Network formations ; social networks ; assimilation and separation …

We survey the literature on social networks by putting together the economics, sociological and physics … network formation. While the physics/applied mathematics approach is capable of reproducing most observed networks, it does … not explain why they emerge. On the contrary, the economics approach is very precise in explaining why networks emerge but …

In order to understand the different characteristics observed in real-world networks, one needs to analyze how and why … networks form, the impact of network structure on agents' outcomes, and the evolution of networks over time. For this purpose … real-world networks. We also find that there exists a sharp transition in efficiency and network density from highly …

determines the structures of networks. In our model, agents are endowed with their own multidimensional characteristics and their … stable networks, and analyze how they are related to the way agents measure social distances. The model predicts the small …-formation costs, the model also accommodates other well documented empirical patterns of social networks such as skewed degree …

groups. We derive several results on the formation of links in such networks, including results on the degree distribution …

then bring the model to the data by using a very detailed dataset of adolescent friendship networks. A novel social network …