My research interests are primarily in the areas of spatial statistics, Bayesian modeling and computation, and statistical network analysis. I have made contributions in the areas of dimension reduction methodology for spatio-temporal data, the development of covariate-driven nonstationary spatial models, hierarchical pathways models for exposure assessment, data-augmentation algorithms for spatial generalized linear (mixed) models, latent space models for network data, and model-based comparisons of networks.  Much of my research is motivated by applications in the environmental, social, and health sciences.  I currently collaborate with social scientists at Ohio State on the Adolescent Health and Development in Context Study, a longitudinal study of adolescents and their daily activity patterns.


Chris Browning – Professor of Sociology, The Ohio State University

Beth Boettner – Senior Research Associate, Institute for Population Research, The Ohio State University

Srinivasan Parthasarathy – Professor of Computer Science and Engineering, The Ohio State University

Jodi Ford – Associate Professor of Nursing, The Ohio State University

Kammi Schmeer – Associate Professor of Sociology, The Ohio State University

Dena Asta – Assistant Professor of Statistics, The Ohio State University

Veronica Berrocal – Associate Professor of Biostatistics, University of Michigan


David Wheeler (PhD in Geography, Ohio State 2006; co-advisor) – Associate Professor of Biostatistics, Virginia Commonwealth University

Hongfei Li (PhD in Statistics, Ohio State, 2007; co-advisor) – Head of Data Science and Principal Data Scientist, IBM Analytics

Candace Berrett (PhD in Statistics, Ohio State, 2010) – Associate Professor of Statistics, Brigham Young University

Bethann Mangel Pflugeisen (MS in Statistics, Ohio State, 2010) – Research Associate, MultiCare Institute for Research & Innovation

Daisuke Tatsumi (MS in Statistics, Ohio State, 2013; unofficial advisor) – Deputy-Director of Engineering, Administrative Office of Ports and Harbours, Bureau,Ministry of Land, Infrastructure, Transport and Tourism, Japan

Mark Risser (PhD in Statistics, Ohio State; 2015) – Research Scientist, Lawrence Berkeley National Lab and Visiting Scholar, UC Berkeley Department of Statistics

Anna Smith (PhD in Statistics, Ohio State; 2017) – Assistant Professor, Department of Statistics, University of Kentucky; Previously, Postdoctoral Fellow, Department of Statistics, Columbia University

Wenna Xi – (PhD in Biostatistics, Ohio State; 2019) – Postdoctoral Associate, Weill Cornell Medicine

Kori Khan – (PhD in Statistics, Ohio State; expected 2020)


My research has been funded by the NIH, NSF, NASA, and other agencies and foundations.