† trainee; * corresponding author.

Dependence modeling with copulas

  1. Guanjie Lyu, Selim Orhun Susam. (2026+). On the boundary properties of the empirical Bernstein copula .
  2. Guanjie Lyu, Cindy Feng*. (2026+). Joint Copula‑Based Beta Regression with Covariate‑Dependent Dispersion for Malaria Indicators.
  3. Guanjie Lyu, Cindy Feng*. (2026+). Copula-Based Bivariate Distributional Regression for Estimating Joint and Conditional Exceedance Probabilities in Overdispersed Count Data.
  4. Guanjie Lyu, Cindy Feng*, Lihui Liu. (2026+). Copula-Based Joint Modelling of Emergency Department Length of Stay and Readmission with Endogeneity.
  5. Guanjie Lyu*, Mohamed Belalia, Yuling Chen†. (2026+). On the computation and efficiency of the integrated empirical copula process for testing independence.
  6. Guanjie Lyu, Mohamed Belalia, Abdulkadir Hussein*. (2026+). Semiparametric copula-based quantile regression for semicontinuous outcomes with application to healthcare data.
  7. Jasper Arends, Guanjie Lyu, Mhamed Mesfioui, Elisa Perrone*, Julien Trufin. (2026). Spearman's rho for zero-inflated count data: formulation and attainable bounds. Statistics and Probability Letters. Accepted. Paper
  8. Guanjie Lyu, Lihui Liu, Cindy Feng*. (2026). Copula-based joint modeling of emergency department visits with time-varying dependence. Canadian Journal of Statistics. Accepted.
  9. Jasper Arends, Guanjie Lyu, Mhamed Mesfioui, Elisa Perrone*, Julien Trufin. (2025+). Rank-based concordance for zero-inflated data: New representations, estimators, and sharp bounds.
  10. Guanjie Lyu*, Mohamed Belalia. (2024+). Testing independence using C-power functions.
  11. Guanjie Lyu, Mohamed Belalia*. (2024+). Testing equality between the dependence structures of two samples using Bernstein polynomials. arXiv:2303.02510.
  12. Guanjie Lyu, Mohamed Belalia*. (2023). Testing symmetry for bivariate copulas using Bernstein polynomials. Statistics and Computing 33 (6): 128. Paper R Code

Nonparametric inference

  1. Guanjie Lyu, Frédéric Ouimet*, Cindy Feng. (2026+). Tweedie-based nonparametric estimation for semicontinuous mixed densities .
  2. Guanjie Lyu*, Cindy Feng. (2026+). Smoothing parameter selection for the Szász-Mirakyan distribution estimator .
  3. Hanen Daayeb, Wissem Jedidi, Salah Khardani, Guanjie Lyu, Frédéric Ouimet*. (2026+). Dirichlet kernel density estimation on the simplex with missing data .
  4. Guanjie Lyu*, Frédéric Ouimet, Cindy Feng. (2026+). Asymptotic properties of multivariate Szász-Mirakyan distribution estimators on the nonnegative orthant .
  5. Guanjie Lyu*, Cindy Feng. (2026+). Smooth cumulative hazard function using Szász-Mirakyan operators for right-censored data .
  6. Guanjie Lyu, Mohamed Belalia*. (2024). Smooth estimation of conditional quantile function using Bernstein polynomials. Statistics 58 (2): 407-421. Paper
  7. Mohamed Belalia*, Guanjie Lyu. (2024). Two-stage conditional density estimation based on Bernstein polynomials. Communications in Statistics - Theory and Methods 53 (11): 4172-4193. Paper

Applied research in health sciences

  1. Cindy Feng*, Mark Asbridge, Amy Grant, Lihui Liu, Guanjie Lyu, Fahima Hassan. (2025). Impact of the COVID-19 Pandemic on Opioid Overdose Mortality in Nova Scotia: An Interrupted Time Series Analysis, 2009–2023. Canadian Journal of Public Health. Accepted. Paper
  2. Cindy Feng*, Guanjie Lyu, Mark Asbridge, Amy Grant, Kathryn Mclsaac, JianLi Wang, Vincent Agyapong, Bryanne Taylor, Patryk Simon, Lihui Liu, Swarna Weerasinghe. (2026+). Spatial and Temporal Patterns of Emergency Department Readmission for Mental Health and Substance Use Conditions.