1. Department of Computer Science, Binghamton University, Binghamton, NY 13902, USA, 2Department of Computer Science, University of Illinois at Chicago, Chicago, IL 60612, USA, 3Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR 97239, USA and 4Department of Psychiatry and Psychiatric Institute, University of Illinois at Chicago, Chicago, IL 60612, USA