He holds an appointment in Health Sciences Informatics in the School of Medicine. His research in natural language processing and machine learning has focused on graphical models, semi-supervised learning, information extraction, large-scale learning and speech processing. His recent work includes health information applications, including information extraction from social media, biomedical and clinical texts. He earned his B.S. (’03) from Northwestern University; his M.S. (’04) from Yeshiva University and his Ph.D. (’09) from the University of Pennsylvania.