Quantile regression and its applications in public health and medicine; Semi-parametric models; multivariate quantiles; longitudinal data analysis; measurement errors; missing data; robust statistics.
2011- 2020, Associate Editor for the Journal of American Statistical Association.
2015 – 2017, Associate Editor for the Science China:Mathematics.
2015 – 2017, Nomination Committee for the International Chinese Statistical Association (ICSA)
2012-2015, on the Board of Directors for the International Chinese Statistical Association
Honors and Awards:
2021, the International Statistical Institute (ISI) Fellow
2020, the Institute of Mathematical Science (IMS) Fellow
2015, the American Statistical Association Fellow
2011, Noether Young Scholar Award by the American Statistical Association.
2008, Career Development Award from the NIEHS Center for Environmental Health in Northern Manhattan
2007, Calderone Research Prize for Junior Faculty (seed grant), Columbia University.