I am a Research Scientist at the Data Science Institute (DSI) and the Department of Computer Science at Columbia University. I am also an Adjunct Associate Professor in the Department of Computer Science. My research is focused on computational models for understanding language in context, such as social context or visual context, with application to computational social science and education. Specific areas of interest are argument mining, language and vision, modeling figurative language such as irony.

Before joining Columbia University, I was a faculty in the School of Communication and Information at Rutgers University, where I co-founded the Laboratory for the Study of Applied Language Technologies and Society. While at Rutgers, I received a Distinguished Achievements in Research Award.