Building a Location-Based Set of Social Media Users

In many instances, one may want to gain situational awareness in an environment by monitoring the content of local social media users. Often the challenge is how to build a set of users from a targ…

Optimizing Opinions with Stubborn Agents

We consider the problem of optimizing the placement of stubborn agents in a social network in order to maximally influence the population. We assume the network contains stubborn users whose opinio…

Detecting Bots and Assessing Their Impact in Social Networks

Online social networks are often subject to influence campaigns by malicious actors through the use of automated accounts known as bots. We consider the problem of detecting bots in online social n…

Finding Extremists in Online Social Networks

Rumors in a Network : Who's the Cuplrit?

Finding rumor sources on random trees