Members of Longhai Li’s Research Lab

Post-doctoral Fellows

1. Tingxuan Wu, RA, Jan 2025 - Dec. 2025
2. Tingxuan Wu, PDF, co-supervised with Prof. Cindy Feng, June 2023 – April 2024
3. Ming-Ming Zhang, PDF, March 2022 - March 2025
4. Jinhong Shi, PDF, team-supervised, 2016-2019.

Ph.D. Students

1. Jing Wang, Ph.D in Biostatistics, Sept 2024-present, co-supervised with Prof. Li Xing

2. Tingxuan Wu, PhD in Biostatistics, 2023, co-supervised with Prof. Cindy Feng

   Thesis: Residual Diagnostics and Statistical Inference for Shared Frailty Models

   Employment: Forestry Statistical Analyst, Ministry of Environment, Government of Saskatchewan

   Publications:

   • Wu, T., Feng, C., Li, L. (2024). Cross-validatory Z-Residual for Diagnosing Shared Frailty Models. The American Statistician 79(2), 198–211. PDF; Free Reprints; slides; Z-residual on Github; Demo

   • Wu, T., Li, L., Feng, C. (2024). Z-residual diagnostic tool for assessing covariate functional form in shared frailty models. Journal of Applied Statistics 52(1), 28–58. PDF; Z-residual on Github; Demo; slides

   • Wu, T., Feng, C., Li, L. (2024). A Comparison of Estimation Methods for Shared Gamma Frailty Models. Statistics in Biosciences 0, 1–22. PDF

3. Wutao Yin, Ph.D., September 2019 - December 2021, co-supervised with Prof. Fang-Xiang Wu

   Thesis: Artificial Intelligence Based Methods for Autism Spectrum Disorder Diagnosis from fMRI Data

   Current position: Associate Professor, Ocean Institute, Northwestern Polytechnical University, Taicang Jiangsu, China

   Publications:

   • Wutao Yin, Longhai Li, Fang-Xiang Wu, A semi-supervised autoencoder for autism disease diagnosis, Neurocomputing, Volume 483, 2022, Pages 140-147.
     
   • Yin, W., Li, L., Wu, F.-X., 2022. Deep learning for brain disorder diagnosis based on fMRI images. Neurocomputing 469, 332–345.
   • Yin, W., Li, L., Wu, F.-X., 2021. A Graph Attention Neural Network for Diagnosing ASD with fMRI Data, in: 2021 IEEE International Conference on Bioinformatics and Biomedicine (BIBM). pp. 1131–1136.

4. Lai Jiang, Ph.D., 2015

   Thesis: Fully Bayesian T-probit Regression with Heavy-tailed Priors for Selection in High-Dimensional Features with Grouping Structure

   Employment: Postdoctoral fellow at Lady Davis Institute, Jewish General Hospital, McGill University in Montreal.

   Publication:

   • Jiang L, Greenwood CMT, Yao W, Li L. Bayesian Hyper-LASSO Classification for Feature Selection with Application to Endometrial Cancer RNA-seq Data. Scientific Reports. 2020 Jun 16;10(1):9747.

Master Students

1. Dananji Shashiprabha, M.Sc. in Statistics, Sept 2023-present, Co-supervised with Prof. Cindy Feng at U of Dalhousie.

2. Effie Wuqian Gao, M.Sc. in Biostatistics, Sept. 2022 - August 2024, Co-supervised with Prof. Cindy Feng at U of Dalhousie.

   Thesis: Z-residuals for Checking Bayesian Hurdle Models

   Employment: Senior Data and Forecasting Analyst, Health Ministry, Government of Saskatchewan

3. Hao Hu, M.Sc., 2022, co-supervised with Prof. Li Xing

   Thesis: Identifying Risk Factors for Cognitive Decline Using Statistical Learning Techniques and Functional Data Analysis

   First Employment: Senior Statistician in Health Ministry in a Chinese goverment

4. Lina Li, M.Sc, May 2021 to September 2021, MITACS project supervisor

   Publication: Real-time estimates of the reproduction rate (R_t) of Canadian provinces.

5. Man Chen, M.Sc., 2021.

   Thesis: Association between Gut Microbiome and Parkinson’s Disease Revealed by Sparse Learning.

   Publication:

   • Dong M, Li L, Chen M, Kusalik A, Xu W. Predictive analysis methods for human microbiome data with application to Parkinson’s disease. PLOS ONE. 2020 Aug 24;15(8):e0237779.

   First Employment: AI Engineer at Super GeoAI Technology Inc.

6. Mei Dong, M.Sc., 2019, co-supervised with Prof. Lloyd Balbuena

   Thesis: Feature Selection Bias in Assessing the Predictivity of SNPs for Alzheimer’s Disease

   Employment: Senior Research Analyst at the University of Toronto.

   Publications:

   • Dong M, Li L, Chen M, Kusalik A, Xu W. Predictive analysis methods for human microbiome data with application to Parkinson’s disease. PLOS ONE. 2020 Aug 24;15(8):e0237779.
   • Bai, W., Dong, M., Li, L., Feng, C., Xu, W., 2021. Randomized quantile residuals for diagnosing zero-inflated generalized linear mixed models with applications to microbiome count data. BMC Bioinformatics 22, 564.

7. Xiaoying Wang, M.Sc., 2019

   Thesis: Comparison of Statistical Testing and Predictive Analysis Methods for Feature Selection in Zero-inflated Microbiome Data

8. Tingxuan Wu, M.Sc. in biostatistics, 2018, co-supervised with Prof. Cindy Feng

   Thesis: Randomized Survival Probability Residuals for Assessing Parametric Survival Models

   Employment: PhD student at the University of Saskatchewan

   Publication:

   • Li, L., Wu, T., Feng, C. (2021). Model diagnostics for censored regression via randomized survival probabilities. Statistics in Medicine 40, 1482–1497. PDF; R Functions and Demonstration; slides-1; slides-2

9. Wei Bai, M.Sc., 2018, co-supervised with Prof. Cindy Feng

   Thesis: Randomized Quantile Residual for Assessing Generalized Linear Mixed Models with Application to Zero-Inflated Microbiome Data

   First Employment: Statistical Programmer, Everest Clinical Research, Markham, Ontario.

   Present Position: Lead Statistical Analyst, Bayer Pharmaceuticals, Ontario, Canada

   Publication:

   • Bai, W., Dong, M., Li, L., Feng, C., Xu, W., 2021. Randomized quantile residuals for diagnosing zero-inflated generalized linear mixed models with applications to microbiome count data. BMC Bioinformatics 22, 564.

10. Arash Shamloo, M.MATH (project-based), 2017

    Project: Randomized quantile residuals for accelerated failure time models

    Employment: Research assistant, College of Pharmacy and Nutrition, University of Saskatchewan.

11. Yunyang Wang, M.Sc., 2016

    Thesis: Comparison of Stochastic Volatility Models Using Integrated Information Criteria

    Employments: Statistician at Montreal office of Evidera (a PPD company), Montreal, QC

    First Employment: Intern at the PathWise Solutions, AON Securities, Toronto.

12. Alireza Sadeghpour, M.Sc., 2016, co-supervised with Prof. Cindy Feng

    Thesis: Empirical Investigation of Randomized Quantile Residuals for Diagnosis of Non-Normal Regression Models

    First Employment: Statistician at Health Canada, Ottawa.

    Publication:

    • Feng C, Li L, Sadeghpour A. A comparison of residual diagnosis tools for diagnosing regression models for count data. BMC Medical Research Methodology. 2020 Jul 1;20(1):175.

13. Naorin Islam, M.Sc., 2016, co-supervised wtih Prof. Khan

    Thesis: Substance Abuse and Health: A Structural Equation Modeling Approach to Assess Latent Health Effects

    First Employment: Research assistant, College of Pharmacy and Nutrition, University of Saskatchewan.

14. Shi Qiu, M.Sc., 2015 (co-supervised with Cindy X. Feng)

    Thesis: Cross-validatory Model Comparison and Divergent Regions Detection using iIS and iWAIC for Disease Mapping

    First Employment: “Data Service Specialist” at IRD Inc. in Saskatoon.

    Present Position: Statistician, Mabwell Therapeutics, Inc., Shanghai, China

    Publications:

    • Longhai Li, Cindy X. Feng, and Shi Qiu* (2017), Estimating Cross-validatory Predictive P-values with Integrated Importance Sampling for Disease Mapping Models. [slides], [R code], arXiv:1603.07668, Statistics in Medicine, Volume 36, Issue 14, Pages 2220-2236.
    • Li, L., Qiu, S., Zhang, B., and Feng, C.X. (2016). Approximating Cross-validatory Predictive Evaluation in Bayesian Latent Variables Models with Integrated IS and WAIC. arXiv 1404.2918, [slides], Statistics and Computing, Volume 26, Issue 4, pp 881-897.

15. Masud Rana, M.Sc., 2012 (co-supervised with Prof. Shahed Khan)

    Thesis: Spatial-Longitudinal Bent-Cable Model with an Application to Atmospheric CFC Data

    First Employments: Biostatistician at Clinical Research Support Unit by College of Medicine of University of Saskatchewan.

    Publication:

    • A Statistical Investigation to Monitor and Understand Atmospheric CFC Decline with the Spatial-Longitudinal Bent-Cable Model.

16. Zhengrong Li, M.Sc., 2012.

    Thesis: A Non-MCMC Procedure for Fitting Dirichlet Process Mixture Models

    First Employment: Data Service Specialist at IRD Inc. in Saskatoon.

Undergraduate Students

1. George Chen, B.Sc., Computer Science, Simon Fraser University, June, 2025 - Aug. 25, 2025, Supervised.

2. Shruti Kaur, B.Sc., Computer Science and Statistics, May - Aug., 2025, Supervised.

3. George Chen, B.Sc., Computer Science, Simon Fraser University, May 7, 2023 - Aug. 25, 2023, Supervised.

4. Noah Little, B.Sc., Anatomy and Cell Biology, April 2022 - Aug. 31, 2022, Supervised.

5. Noah Little, B.Sc., Anatomy and Cell Biology, Aug. 2020 - Feb. 2021, Supervised.

6. Lifang Lei, B.Sc., Mechanical Engineering, Oct. 2020 - March 2021, Supervised.

7. Yanping Li, B.Sc., Business, Edward Business School, Feb. 2021 - June 2021, Supervised.

8. Hao Hu, B.Sc., Statistics, 2019-2020, Undergraduate Thesis Supervision, Supervised.

9. Steven Liu, B.Sc., Computer Science, July 2019 - Oct. 2020, Summer Research Assistant, Supervised.

10. Lina Li, B.Sc., Statistics, May 2020 - June 2020, Summer Research Assistant, Supervised.

    Project title: Investigation of Randomized Quantile Residuals

11. Steven Liu, B.Sc., Computer Science, June 17, 2019 - Aug. 31, 2019, Supervised.

    Project title: Development of an R package for Bayesian Hyper-LASSO Logistic Regression

    Software:
    HTLR: Bayesian Logistic Regression with Heavy-Tailed Priors, [CRAN page], [Github page]. HTLR was listed in the top 40 new packages in October 2019 by R views of Rstudio.

12. Jian Su, B.Sc., Computer Science, May 1, 2018 - Aug. 31, 2018, Supervised.

    Project title: Development of Bayes Predictive Models based on Generalized Linear Mixed Models with application to microbiome data

13. Jiaqi Xiao, B.Sc., Economics, Research Assistant, May 2016 - Aug. 2016, Supervised.

14. Jiaqi Xiao, B.Sc., Economics, May 2015 - Aug. 2015, Supervised.

    Project title: Application of iIS and iWAIC to Compare Models for Economic Data.

    Employment: M.Sc. student at Queen’s University

15. Zhouji Zheng, B.Sc., Mathematics, 2014-2015, undergraduate research assistant, Supervised.

    Project title: Application of Importance Sampling to Compare Bayesian Stochastic Volatility Models.

    Employment: M.Sc. student at the University of Toronto

16. Bei Zhang, B.Sc., Statistics, May 1, 2013 - Aug. 31, 2013, Supervised.

    Project title: Cross-validatory Model Checks with iIS for Logistic Random Effect Models

    Publication: Approximating Cross-validatory Predictive Evaluation in Bayesian Latent Variables Models with Integrated IS and WAIC.

Last updated on April 19, 2026.