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We present a method for providing statistical guarantees on runtime safety and goal reachability for integrated planning and control of a class of systems with unknown nonlinear stochastic underactuated dynamics. Specifically, given a…

机器人学 · 计算机科学 2022-12-15 Craig Knuth , Glen Chou , Jamie Reese , Joe Moore

Randomization, as a key technique in clinical trials, can eliminate sources of bias and produce comparable treatment groups. In randomized experiments, the treatment effect is a parameter of general interest. Researchers have explored the…

统计方法学 · 统计学 2023-12-05 Fuyi Tu , Wei Ma , Hanzhong Liu

This paper develops a conformal method to compute prediction intervals for non-parametric regression that can automatically adapt to skewed data. Leveraging black-box machine learning algorithms to estimate the conditional distribution of…

统计方法学 · 统计学 2021-10-26 Matteo Sesia , Yaniv Romano

Variational mean field approximations tend to struggle with contemporary overparametrized deep neural networks. Where a Bayesian treatment is usually associated with high-quality predictions and uncertainties, the practical reality has been…

Convolutional neural networks (CNN) have been extensively used for inverse problems. However, their prediction error for unseen test data is difficult to estimate a priori since the neural networks are trained using only selected data and…

计算机视觉与模式识别 · 计算机科学 2019-06-19 Eunju Cha , Jaeduck Jang , Junho Lee , Eunha Lee , Jong Chul Ye

When causal quantities cannot be point identified, researchers often pursue partial identification to quantify the range of possible values. However, the peculiarities of applied research conditions can make this analytically intractable.…

统计方法学 · 统计学 2021-09-29 Guilherme Duarte , Noam Finkelstein , Dean Knox , Jonathan Mummolo , Ilya Shpitser

Certifiable, adaptive uncertainty estimates for unknown quantities are an essential ingredient of sequential decision-making algorithms. Standard approaches rely on problem-dependent concentration results and are limited to a specific…

机器学习 · 计算机科学 2023-11-09 Nicolas Emmenegger , Mojmír Mutný , Andreas Krause

We consider the problem of quickly detecting a signal in a sensor network when the subset of sensors in which signal may be present is completely unknown. We formulate this problem as a sequential hypothesis testing problem with a simple…

统计理论 · 数学 2013-11-12 Georgios Fellouris , Alexander Tartakovsky

A common challenge in nonparametric inference is its high computational complexity when data volume is large. In this paper, we develop computationally efficient nonparametric testing by employing a random projection strategy. In the…

统计理论 · 数学 2018-02-20 Meimei Liu , Zuofeng Shang , Guang Cheng

Time-series prediction has drawn considerable attention during the past decades fueled by the emerging advances of deep learning methods. However, most neural network based methods lack interpretability and fail in extracting the hidden…

机器学习 · 计算机科学 2023-03-03 Xiaoyi Liu , Duxin Chen , Wenjia Wei , Xia Zhu , Wenwu Yu

We propose new estimates for the frontier of a set of points. They are defined as kernel estimates covering all the points and whose associated support is of smallest surface. The estimates are written as linear combinatio- ns of kernel…

统计方法学 · 统计学 2011-03-31 Guillaume Bouchard , Stéphane Girard , Anatoli Iouditski , Alexander Nazin

Seemingly unrelated linear regression models are introduced in which the distribution of the errors is a finite mixture of Gaussian components. Identifiability conditions are provided. The score vector and the Hessian matrix are derived.…

统计方法学 · 统计学 2014-03-18 Giuliano Galimberti , Elena Scardovi , Gabriele Soffritti

Complex scientific models where the likelihood cannot be evaluated present a challenge for statistical inference. Over the past two decades, a wide range of algorithms have been proposed for learning parameters in computationally feasible…

统计计算 · 统计学 2021-12-16 Aden Forrow , Ruth E. Baker

Trend change prediction in complex systems with a large number of noisy time series is a problem with many applications for real-world phenomena, with stock markets as a notoriously difficult to predict example of such systems. We approach…

计算金融 · 定量金融 2018-11-30 Ben Moews , J. Michael Herrmann , Gbenga Ibikunle

The fused lasso, also known as (anisotropic) total variation denoising, is widely used for piecewise constant signal estimation with respect to a given undirected graph. The fused lasso estimate is highly nontrivial to compute when the…

Generating high quality uncertainty estimates for sequential regression, particularly deep recurrent networks, remains a challenging and open problem. Existing approaches often make restrictive assumptions (such as stationarity) yet still…

机器学习 · 计算机科学 2021-07-26 Jiri Navratil , Matthew Arnold , Benjamin Elder

Probabilities of causation are fundamental to individual-level explanation and decision making, yet they are inherently counterfactual and not point-identifiable from data in general. Existing bounds either disregard available covariates,…

人工智能 · 计算机科学 2026-02-17 Yuxuan Xie , Ang Li

The statistical analysis of data stemming from dynamical systems, including, but not limited to, time series, routinely relies on the estimation of information theoretical quantities, most notably Shannon entropy. To this purpose, possibly…

信息论 · 计算机科学 2021-09-01 Leonardo Ricci , Alessio Perinelli , Michele Castelluzzo

Bayesian inference for high-dimensional inverse problems is computationally costly and requires selecting a suitable prior distribution. Amortized variational inference addresses these challenges via a neural network that approximates the…

机器学习 · 统计学 2023-01-19 Ali Siahkoohi , Gabrio Rizzuti , Rafael Orozco , Felix J. Herrmann

We present an algorithmic framework for the identification of candidate invariant subspaces for switched linear systems. Namely, the framework allows to compute an orthonormal basis in which the matrices of the system are close to…

最优化与控制 · 数学 2022-09-13 Guillaume O. Berger , Raphaël M. Jungers , Zheming Wang