arXiv:2611.07937v1 Announce Type: cross
Abstract: Functional data analysis provides a framework for studying time-varying associations between covariates and high-frequency biological signals. In dig...
By Yang Xiao, Francisco Gude, Marcos Matabuena
arXiv:2610.07388v1 Announce Type: cross
Abstract: Joint Models simultaneously model longitudinal and survival outcomes, leveraging patterns in patients' longitudinal trajectory to improve the predict...
By Barsha Halder, Jeffrey A. Thompson
The paper introduces MEGPODE, a Bayesian nonparametric mixed‑effect ODE framework that models each subject’s dynamics as a combination of a shared population component and a subject‑specific deviation, both governed by Gaussian process priors. It avoids repeated ODE solves by representing latent trajectories with state‑space GP priors and penalizing derivative discrepancies on a finite time grid, enabling a single variational objective for joint inference of trajectories and vector fields. Experiments on heterogeneous oscillatory and biomedical ODE benchmarks show that MEGPODE outperforms strong baselines in recovering population‑level fields and predicting subject‑level trajectories.
By Julien Martinelli, Maksim Sinelnikov, Harri L\"ahdesm\"aki, Quentin Clairon, M\'elanie Prague
Joint Models simultaneously model longitudinal and survival outcomes, leveraging patterns in patients' longitudinal trajectory to improve the prediction of survival outcomes. The classical parametric...
arXiv:2610.34349v1 Announce Type: cross
Abstract: In longitudinal studies, repeated treatments may be followed by different sequences of mediators and time-varying covariates. We develop semiparametr...
By Xiaxian Ou, Xinwei He, Razieh Nabi
The paper investigates how learned multimodal representations of high‑dimensional health data can fail to preserve causal information, even when trained to reconstruct the data. It establishes conditions under which a representation is sufficient for causal identification, shows that interventional mediation requires stricter preservation than counterfactual comparison, and proves that reconstruction‑based objectives cannot certify sufficiency. The authors decompose the error of cross‑fitted doubly robust estimators into a first‑order representation bias and a second‑order nuisance‑estimation remainder, demonstrating that coverage can deteriorate with larger samples if the representation is insufficient. They propose a practical workflow that combines modality‑specific variational autoencoders, cross‑fitted doubly robust estimation, locked phenotypes, selective pathway analysis, portable representations, and diagnostics for representation insufficiency, exposure leakage, and sensitivity, and validate it in simulations where a rare confounder’s omission leads to severely under‑covered indirect‑effect intervals.
By Cong Cao