Author

Yuan Zhang

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Open access Oct 2026

Dynamic risk assessment by landmark modeling of the restricted residual mean survival time

Dynamic risk assessment is an important tool for healthcare providers to inform treatment selection and optimize patient outcomes. Frequent evaluation of clinical status provides invaluable information on adverse event risk and/or treatment urgency, based on the changes in predictive biomarkers. Landmark analysis is a...

Yuan Zhang, D. Schaubel · Lifetime Data Analysis · 0 citations

#artificial intelligence May 2026

First-Order Efficiency for Probabilistic Value Estimation via A Statistical Viewpoint

This work proposes an Efficiency-Aware Surrogate-adjusted Estimator (EASE) that directly chooses the sampling law and surrogate to minimize the leading mean squared error (MSE), and demonstrates that EASE consistently outperforms existing estimators for various probabilistic values.

Ziqi Liu, Kiljae Lee, Yuan Zhang et al. · arXiv.org · 1 citation