Author

R. Liu

Observed name: Liu, Ren-Rui

Institution: Zhejiang University

Observed institution: Zhejiang University

OpenAlex ID: A5013270626

Learning under Target Shift: Optimal Density Ratio Estimation and Importance-Weighted Regression

2026 · Liu, Ren-Rui, Guo, Zheng-Chu · arXiv (Cornell University)

Unbounded Density Ratio Estimation and Its Application to Covariate Shift Adaptation

2026 · Liu, Ren-Rui, Fan, Jun, et al. · arXiv (Cornell University)

Spectral Algorithms in Misspecified Regression: Convergence under Covariate Shift

2025 · Liu, Ren-Rui, Guo, Zheng-Chu · arXiv (Cornell University)

Works count: 3

Citation count:

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