Yi Liu's Homepage

*marks equal contributions; †indicates I am a corresponding author.

Data Fusion, Exchangeability and Federated Learning

  1. Liu Y, Levis A, Zhu K, Yang S, Gilbert PB, and Han L (2025). Targeted Data Fusion for Causal Survival Analysis Under Distribution Shift. Preprint. [arXiv]

    Selected for IMS Hannan Graduate Student Travel Award (2025).

  2. Liu Y, Levis A, Normand S-L, and Han L (2024). Multi-Source Conformal Inference Under Distribution Shift. Proceedings of the 41st International Conference on Machine Learning (ICML), PMLR 235:31344-31382. [OpenReview][software][poster]

    Selected for Graduate Stduent Association Travel Award (2024) from North Carolina State University.

Randomized Clinical Trials

  1. Liu Y, Zhu K, Han L, and Yang S (2025). COADVISE: Covariate Adjustment with Variable Selection in Randomized Controlled Trials. Submitted. [arXiv][software]
  2. Gao Y*, Liu Y*†, and Matsouaka RA (2024). When does adjusting covariate under randomization help? A comparative study on current practices. BMC Medical Research Methodology 24(250):1-17.

Propensity Score Weighting in Observational Studies

  1. Wang Y*, Liu Y*†, and Yang S (2024). Rate doubly robust estimations for weighted average treatment effects. Under review. [software]
  2. Liu Y, Li H, Zhou Y, and Matsouaka RA (2024). Average treatment effect on the treated, under lack of positivity. Statistical Methods in Medical Research 33(10):1689-1717. [arXiv][slides][software]
  3. Matsouaka RA*, Liu Y*, and Zhou Y (2024). Overlap, matching, or entropy weights: what are we weighting for? Communications in Statistics - Simulation and Computation. [arXiv][poster]

    Selected for Student Poster Award at ASA Biopharmaceutical Section Regulatory-Industry Statistics Workshop (2023), Student Poster Award at Georgia Statistics Day (2022), and Outstanding Master's Project Award (2022) from Duke Biostatistics and Bioinformatics.

  4. Matsouaka RA, Liu Y, and Zhou Y (2023). Variance estimation for the average treatment effects on the treated and on the controls. Statistical Methods in Medical Research 32(2):389-403. [arXiv]

Selected Applications and Interdisciplinary Collaborations

  1. Poteat T, Liu Y, Adams D, van der Merwe L, Cloete A, Howard L, and McCarthy J. Social Determinants of HIV Status and Viral Load Suppression among Transgender Women in South Africa: A Cross-Sectional Analysis. Submitted. [infographic]

    Selected for Best Quantitative Science Poster Award (2024) at Duke Center for AIDS Research Fall Scientific Retreat.

  2. Liu J, Liu Y, Zhou Y, and Matsouaka RA (2025). Assessing racial disparities in healthcare expenditure using generalized propensity score weighting. BMC Medical Research Methodology 25(64):1-16.