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A Refined Generalization Analysis for Extreme Multi-class Supervised Contrastive Representation Learning Ensemble Distributionally Robust Bayesian Optimisation The Proxy Presumption: From Semantic Embeddings to Valid Social Measures Modulated learning for private and distributed regression with just a single sample per client device Query-efficient model evaluation using cached responses Functional-prior-based approaches to Bayesian PDE-constrained inversion using physics-informed neural networks Optimal Experiments for Partial Causal Effect Identification Order-Agnostic Autoregressive Modelling with Missing Data Grokking or Glitching? How Low-Precision Drives Slingshot Loss Spikes Tuning Derivatives for Causal Fairness in Machine Learning Spherical Flows for Sampling Categorical Data Bayesian Rain Field Reconstruction using Commercial Microwave Links and Diffusion Model Priors GRALIS: A Unified Canonical Framework for Linear Attribution Methods via Riesz Representation Sharp Capacity Thresholds in Linear Associative Memory: From Winner-Take-All to Listwise Retrieval Unified Framework of Distributional Regret in Multi-Armed Bandits and Reinforcement Learning Jacobian-Velocity Bounds for Deployment Risk Under Covariate Drift Self-Attention as Transport: Limits of Symmetric Spectral Diagnostics Perturbation is All You Need for Extrapolating Language Models Adapt or Forget: Provable Tradeoffs Between Adam and SGD in Nonstationary Optimization Realizable Bayes-Consistency for General Metric Losses Graph Convolutional Support Vector Regression for Robust Spatiotemporal Forecasting of Urban Air Pollution Segmenting Human-LLM Co-authored Text via Change Point Detection Stochastic Schrödinger Diffusion Models for Pure-State Ensemble Generation Understanding Self-Supervised Learning via Latent Distribution Matching The Geometric Mechanics of Contrastive Representation Learning: Alignment Potentials, Entropic Dispersion, and Cross-modal Divergence Imbalanced Classification under Capacity Constraints On the Spectral Structure and Objective Equivalence of Orthogonal Multilabel Fisher Discriminants Partially Observed Structural Causal Models First-Order Efficiency for Probabilistic Value Estimation via A Statistical Viewpoint Robust and Fast Training via Per-Sample Clipping
Robust Semiparametric Inference for Bayesian Additive Reg...
[Submitted on 29 Sep 2025 (v1), last revised 17 Aug 2026 (this v · 2025-09-29 · via stat updates on arXiv.org

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Abstract:We develop a corrected posterior distribution for semiparametric inference on the population mean under missing-at-random (MAR). The procedure combines Bayesian Additive Regression Trees (BART) with Bayesian-bootstrap reweighting. We derive a new Bernstein-von Mises (BvM) theorem and show that even the one-step posterior contains a bias term in the non-Donsker regime. To remove this term, we introduce RoBART, a posterior correction based on pilot estimators of the outcome regression and propensity score. We establish a BvM theorem for the corrected posterior and develop a cross-fitted version based on fold-specific BART posteriors. The average of fold-specific posterior means of RoBART coincides exactly with the corresponding cross-fitted augmented inverse-probability-weighted estimator, equivalently the double machine learning estimator. RoBART therefore provides a corrected posterior distribution for uncertainty quantification around the same point estimator. In simulations and an empirical illustration, RoBART demonstrates competitive finite-sample performance relative to existing methods.

Submission history

From: Christoph Breunig [view email]
[v1] Mon, 29 Sep 2025 11:42:06 UTC (62 KB)
[v2] Mon, 20 Oct 2025 09:00:10 UTC (36 KB)
[v3] Mon, 17 Aug 2026 20:35:31 UTC (67 KB)