Research interests

• Longitudinal, functional, and multivariate data
• Mixed effects models and measurement errors
• Multivariate tests
• Semiparametric and nonparametric inferences

Selected professional memberships

• American Statistical Association (ASA), 2003

Selected publications

• Li, E., Mohsen, P. (2013). Alternative REML estimation of covariance matrices in linear mixed models. Statistics & Probability Letters, 83, 1071-1077.
• Li, E., Lim, J., Kim, K. & Lee, S. (2012). Distribution-free tests of mean vectors and covariance matrices for multivariate paired data. Metrika, 75, 833-854.
• Lee, S. H., Lim, J., Li, E., Vannucci, M. & Petkova, E. (2012). Order test for high-dimensional two sample means. Journal of Statistical Planning and Inference, 142, 2719-2725.
• Ryu, D., Li, E. & Mallick, B. (2011). Bayesian nonparametric regression analysis of data with random effects covariates from longitudinal measurements. Biometrics, 67, 454–466.
• Lim, J., Li, E. & Lee, S. (2010). Likelihood ratio tests of correlated multivariate samples. Journal of Multivariate Analysis, 101, 541-554.
• Li, E., Wang, N. & Wang, N. (2007). Joint models for a primary endpoint and multiple longitudinal covariate processes. Biometrics, 63, 1068-1078.
• Li, E., Zhang, D. & Davidian, M. (2007). Likelihood and pseudo-likelihood methods for semiparametric joint models for a primary endpoint and longitudinal data. Computational Statistics and Data Analysis, 51, 5776-5790..
• Li, E., Zhang, D. & Davidian, M. (2004). Conditional estimation for generalized linear models when covariates are subject-specific parameters in a mixed model for longitudinal measurements. Biometrics, 60, 1-7.
• Pressler, B. M., Mohammadian, L. A., Li, E., Vaden, S. L., Levine, J. F., Mathews, K. G. & Robertson, I. D. (2004). In vitro prediction of canine urolith mineral composition using computed tomographic mean beam attenuation measurements. Veterinary Radiology & Ultrasound, 45, 189-197.
• MacAlpine, M. J., Li, E. (2003). Positive Corona in air using a point/cup electrode system. IEEE Transactions on Dielectrics and Electrical Insulation, 10, 307-311.