Contact Info

Primary Title: 
Associate Professor
Joint Appointment: 
Adjunct Faculty in the Department of Public Health (Biostatistics), Faculty member of the multidisciplinary Molecular and Cellular Biology (MCB) Graduate Program
Email Contact: 
Voice Contact: 
(541) 737-1992
Weniger Hall, Room 235


  • Ph.D., Statistics, University of Washington, Seattle, WA, 2004-2009
  • M.S. Statistics, Arizona State University, Tempe, AZ, 2001-2003
  • M.S. Mathematics, Tsinghua University, Beijing, China, 1997-2000
  • B.S. Applied Mathematics, Tsinghua University, Beijing, China, 1993-1997

Research Interests

  • RNA-Seq and gene expression studies, statistical methods for omics data
  • Statistical genetics, linkage and association studies
  • Applied statistics
  • Statistical computing
  • Software development

Selected Publications [for a full list, see personal webpage]

  • Di, Y. (2015), "Single-gene negative binomial regression models for RNA-Seq data with higher-order asymptotic inference," Statistics and Its Interface, 8, 405-418. [link]
  • Mi, G. and Di, Y. (2015), "The Level of Residual Dispersion Variation and the Power of Differential Expression Tests for RNA-Seq Data," PLoS ONE, 10(4). [link]
  • Jiang, Y., Emerson, S., Wang, L., Li, L., and Di, Y. (2014), "Family-based association test using normal approximation to gene dropping null distribution," BMC Proceedings, 8(Supp 1), S18. [link]
  • Di, Y., Schafer, D. W., Emerson, S. C., and Chang, J. H. (2013), "Higher order asymptotics for negative binomial regression inferences from RNA-sequencing data," Stat Appl Genet Mol Biol, 12(1), 49-70. [link]
  • Di, Y., Schafer, D. W., Cumbie, J. S., and Chang, J. H. (2011), "The NBP Negative Binomial Model for Assessing Differential Gene Expression from RNA-Seq," Statistical Applications in Genetics and Molecular Biology, 10(1). [link]

Instructional and Departmental Activities

  • ST 421/521 Introduction to Mathematical Statistics I
  • ST 422/522 Introduction to Mathematical Statistics II
  • ST 661 Advanced Theory of Statistics I
  • ST 415/515 Design and Analysis of Planned Experiments

Professional Societies

  • American Statistical Association (ASA)
  • Institute of Mathematical Statistics (IMS)
  • International Chinese Statistical Association (ICSA)