His current research focuses on statistical and mathematical analysis and modeling of social and biological networks and their connection to human health; development of metrics and methods for network analysis; and development of methods for analyzing online social systems and social media. His group focuses on network methods that combine ideas from two different approaches to the study of networked systems, the physics based approach (network science) and the statistics based approach (network analysis). He also contributes to the development of network methods as a member of the HIV Prevention Methods Working Group.ProfileM. Omar RahmanAdjunct Associate Professor of Demography and Epidemiology, Harvard School of Public HealthProfileSV SubramanianAssociate Professor in the Department of Society, Human Development and Health, HSPHProfile