Harnessing Big Data for Population Health: Advancing Natural Language Processing Techniques to Extract Social-Behavioral Risk Factors from Free Text within Large Electronic Health Record Systems

Jonathan Weiner, Hadi Kharrazi, Elham Hatef* 1, Mark Dredze 2, Christopher Chute 3, 1Center for Population Health Information Technology, Health Policy and Management, Bloomberg School of Public Health, Johns Hopkins University, 2Center for Language and Speech Processing & Malone Center for Engineering in Healthcare, Whiting School of Engineering, Johns Hopkins University, 3School of Medicine & Chief Research Information Officer, Johns Hopkins Health System