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Stress testing poses a causal question: how would portfolio credit losses change if the macroeconomy followed an adverse counterfactual path? Yet standard practice remains predictive and might be therefore vulnerable to omitted-variable…

人工智能 · 计算机科学 2026-05-19 Yu Wang , Xiangchen Liu , Siguang Li

We develop new methods for constructing confidence sets and intervals in linear instrumental variables (IV) models based on tests that remain valid under weak identification and under heteroskedastic, autocorrelated, or clustered errors. In…

计量经济学 · 经济学 2026-04-07 Gustavo Schlemper , Marcelo J. Moreira

Transformers are theoretically reversal-invariant: their function class does not prefer left-to-right over right-to-left mappings. Yet empirical studies on natural language repeatedly report a "reversal curse," and recent work on temporal…

计算与语言 · 计算机科学 2025-11-26 Mihir Sahasrabudhe

Inference-time steering is widely regarded as a lightweight and parameter-free mechanism for controlling large language model (LLM) behavior, and prior work has often suggested that simple activation-level interventions can reliably induce…

人工智能 · 计算机科学 2026-03-20 Zikang Ding , Qiying Hu , Yi Zhang , Hongji Li , Junchi Yao , Hongbo Liu , Lijie Hu

Randomization-based inference commonly relies on grid search methods to construct confidence intervals by inverting hypothesis tests over a range of parameter values. While straightforward, this approach is computationally intensive and can…

计量经济学 · 经济学 2025-12-17 Ian Xu

In Structural Health Monitoring (SHM), the recovery of distributed mechanical parameters from sparse data is often ill-posed, raising critical questions about identifiability and the reliability of inferred states. While deterministic…

计算工程、金融与科学 · 计算机科学 2025-11-24 Tammam Bakeer , Max Herbers , Steffen Marx

We focus on the problem estimating a monotone trend function under additive and dependent noise. New point-wise confidence interval estimators under both short- and long-range dependent errors are introduced and studied. These intervals are…

统计理论 · 数学 2016-02-23 Pramita Bagchi , Moulinath Banerjee , Stilian Stoev

Fluctuations of local fields are crucial for the prediction of failure in random composites across different scales as well as estimating the inelastic behaviour of it. This can be quantified statistically through second moments of the…

计算物理 · 物理学 2025-09-03 Tarkes Dora Pallicity

Confidence sets play a fundamental role in statistical inference. In this paper, we consider confidence intervals for high dimensional linear regression with random design. We first establish the convergence rates of the minimax expected…

统计理论 · 数学 2015-11-30 T. Tony Cai , Zijian Guo

We propose to use techniques from Bayesian inference and deep neural networks to translate uncertainty in seismic imaging to uncertainty in tasks performed on the image, such as horizon tracking. Seismic imaging is an ill-posed inverse…

地球物理 · 物理学 2022-06-17 Ali Siahkoohi , Gabrio Rizzuti , Felix J. Herrmann

Machine learning approaches commonly rely on the assumption of independent and identically distributed (i.i.d.) data. In reality, however, this assumption is almost always violated due to distribution shifts between environments. Although…

机器学习 · 计算机科学 2022-10-18 Ronan Perry , Julius von Kügelgen , Bernhard Schölkopf

Recent years have experienced increasing utilization of complex machine learning models across multiple sources of data to inform more generalizable decision-making. However, distribution shifts across data sources and privacy concerns…

统计方法学 · 统计学 2024-05-16 Yi Liu , Alexander W. Levis , Sharon-Lise Normand , Larry Han

Focal mechanisms of small earthquakes are critical for characterizing faults and regional stress. P-wave polarities and S/P amplitude ratios (e.g., in HASH) are widely used to determine focal mechanisms for small earthquakes, but…

地球物理 · 物理学 2026-03-31 Miao Zhang

Conformal prediction, which makes no distributional assumptions about the data, has emerged as a powerful and reliable approach to uncertainty quantification in practical applications. The nonconformity measure used in conformal prediction…

机器学习 · 计算机科学 2024-10-15 Yuko Kato , David M. J. Tax , Marco Loog

Hydrogeologic models are commonly over-smoothed relative to reality, owing to the difficulty of obtaining accurate high-resolution information about the subsurface. When used in an inversion context, such models may introduce systematic…

谱理论 · 数学 2018-01-17 Scott K. Hansen , Jiachuan He , Velimir V. Vesselinov

We present a methodology to impose micromechanical constraints, i.e. stress equilibrium at grain and sub-grain scale, to an arbitrary (non-equilibrated) voxelized stress field obtained, for example, by means of synchrotron X-ray diffraction…

Imbalanced data, where the positive samples represent only a small proportion compared to the negative samples, makes it challenging for classification problems to balance the false positive and false negative rates. A common approach to…

机器学习 · 统计学 2026-02-17 Pengfei Lyu , Zhengchi Ma , Linjun Zhang , Anru R. Zhang

In the analysis of survey data it is of interest to estimate and quantify uncertainty about means or totals for each of several non-overlapping subpopulations, or areas. When the sample size for a given area is small, standard confidence…

统计方法学 · 统计学 2018-09-26 Kyle Burris , Peter Hoff

We present a novel and easy-to-use method for calibrating error-rate based confidence intervals to evidence-based support intervals. Support intervals are obtained from inverting Bayes factors based on a parameter estimate and its standard…

统计方法学 · 统计学 2023-06-28 Samuel Pawel , Alexander Ly , Eric-Jan Wagenmakers

This work introduces a new method to efficiently solve optimization problems constrained by partial differential equations (PDEs) with uncertain coefficients. The method leverages two sources of inexactness that trade accuracy for speed:…

最优化与控制 · 数学 2019-05-20 Matthew J. Zahr , Kevin T. Carlberg , Drew P. Kouri
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