Research

Opinion Polarization in Social Media

Modern social media envisioned a connected world with openness, transparency, and fluidity of information exchange. Why, then, have political polarization and social division exacerbated in social media?

Origins of Network Wormholes

People enjoy the company of those who are similar to themselves. Then why do rare bridging ties between socially distant and dissimilar people exist in population-scale social networks?

Higher-Order Interactions as Social Ritual

Social networks are powerful analytic representations of social systems, built up from the collection of social ties between individuals. However, as we often experience in social rituals, group interactions among co-present individuals are often irreducible to the sum of 1:1 social ties. Do group interactions with ritualistic character occur in online settings? How can we identify and study them using alternative analytic representions?

Informal Collaboration and the Production of Disruptive Knowledge

Large-scale collaborations have become prevalent in science, but why does disruptive knowledge tend to originate from smaller teams?

Mesh of Civilizations

Broad cultural divides continue to structure international communication in the digital age

Status and Gift Exchange

People of similar status delay gift reciprocation to signal higher status

Network-Based Group Account Classification

Simple classification of individual and group accounts on Twitter