4 citations · 4 across the 3 of their papers we have counts for
4 papers
Model-Induced Hazard Geometry and Functional Representations in Survival Analysis
Xijia Liu
Individualized survival predictions are often summarized by scalar risk scores or event probabilities at selected time horizons, although clinically relevant risk may also differ i…
Rethinking Individual Risk and Aggregation in Survival Analysis: A Latent Mechanism Framework
Xijia Liu
Survival analysis provides a well-established framework for modeling time-to-event data, with hazard and survival functions formally defined as population-level quantities. In appl…
Doubly robust estimation with functional outcomes missing at random
Xijia Liu, Kreske Felix Ecker, Lina Schelin +1
We present and study semi-parametric estimators for the mean of functional outcomes in situations where some of these outcomes are missing and covariate information is available on…
Splinets -- efficient orthonormalization of the B-splines
Xijia Liu, Hiba Nassar, Krzysztof PodgÓrski
A new efficient orthogonalization of the B-spline basis is proposed and contrasted with some previous orthogonalized methods. The resulting orthogonal basis of splines is best visu…