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Implicit sampling is a weighted sampling method that is used in data assimilation, where one sequentially updates estimates of the state of a stochastic model based on a stream of noisy or incomplete data. Here we describe how to use…

数值分析 · 数学 2016-01-20 Matthias Morzfeld , Xuemin Tu , Jon Wilkening , Alexandre J. Chorin

Solving partial differential equations (PDEs) can be prohibitively expensive using traditional numerical methods. Deep learning-based surrogate models typically specialize in a single PDE with fixed parameters. We present a framework for…

机器学习 · 计算机科学 2025-11-14 Qian-Ze Zhu , Paul Raccuglia , Michael P. Brenner

Existing work on understanding deep learning often employs measures that compress all data-dependent information into a few numbers. In this work, we adopt a perspective based on the role of individual examples. We introduce a measure of…

机器学习 · 计算机科学 2021-06-21 Robert J. N. Baldock , Hartmut Maennel , Behnam Neyshabur

Ordinary differential equations (ODEs) are foundational in modeling intricate dynamics across a gamut of scientific disciplines. Yet, a possibility to represent a single phenomenon through multiple ODE models, driven by different…

统计方法学 · 统计学 2023-09-01 Itai Dattner , Shota Gugushvili , Oleksandr Laskorunskyi

We propose a Bayesian evidence-based inference framework based on relative belief ratios and apply it to discriminating between one and two incoherent optical point sources using spatial-mode demultiplexing (SPADE). Unlike the Helstrom…

In mapping enterprise applications, data mapping remains a fundamental part of integration development, but its time consuming. An increasing number of applications lack naming standards, and nested field structures further add complexity…

人工智能 · 计算机科学 2023-07-11 Nischal Ashok Kumar , Nitin Gupta , Shanmukha Guttula , Hima Patel

We introduce a novel grid-independent model for learning partial differential equations (PDEs) from noisy and partial observations on irregular spatiotemporal grids. We propose a space-time continuous latent neural PDE model with an…

机器学习 · 计算机科学 2023-10-27 Valerii Iakovlev , Markus Heinonen , Harri Lähdesmäki

Unveiling the underlying governing equations of nonlinear dynamic systems remains a significant challenge. Insufficient prior knowledge hinders the determination of an accurate candidate library, while noisy observations lead to imprecise…

机器学习 · 计算机科学 2024-04-30 Mengge Du , Yuntian Chen , Longfeng Nie , Siyu Lou , Dongxiao Zhang

In this paper, we further develop the approach, originating in [14 (arXiv:1311.6765),20 (arXiv:1604.02576)], to "computation-friendly" hypothesis testing and statistical estimation via Convex Programming. Specifically, we focus on…

统计理论 · 数学 2018-04-16 Anatoli Juditsky , Arkadi Nemirovski

Inferring unbiased treatment effects has received widespread attention in the machine learning community. In recent years, our community has proposed numerous solutions in standard settings, high-dimensional treatment settings, and even…

机器学习 · 计算机科学 2024-03-19 Krzysztof Kacprzyk , Samuel Holt , Jeroen Berrevoets , Zhaozhi Qian , Mihaela van der Schaar

The data-driven discovery of interpretable models approximating the underlying dynamics of a physical system has gained attraction in the past decade. Current approaches employ pre-specified functional forms or basis functions and often…

机器学习 · 计算机科学 2025-07-30 Rahul Golder , M. M. Faruque Hasan

With an increasing use of data-driven models to control robotic systems, it has become important to develop a methodology for validating such models before they can be deployed to design a controller for the actual system. Specifically, it…

系统与控制 · 计算机科学 2018-03-28 Somil Bansal , Shromona Ghosh , Alberto Sangiovanni-Vincentelli , Sanjit A. Seshia , Claire J. Tomlin

Providing explanations along with predictions is crucial in some text processing tasks. Therefore, we propose a new self-interpretable model that performs output prediction and simultaneously provides an explanation in terms of the presence…

机器学习 · 计算机科学 2019-09-30 Diane Bouchacourt , Ludovic Denoyer

Modeling complex dynamical systems with only partial knowledge of their physical mechanisms is a crucial problem across all scientific and engineering disciplines. Purely data-driven approaches, which only make use of an artificial neural…

流体动力学 · 物理学 2023-10-04 Nilam Tathawadekar , Nguyen Anh Khoa Doan , Camilo F. Silva , Nils Thuerey

In recent years, data-driven methods have been developed to learn dynamical systems and partial differential equations (PDE). The goal of such work is discovering unknown physics and the corresponding equations. However, prior to achieving…

机器学习 · 统计学 2021-02-17 Hao Xu , Haibin Chang , Dongxiao Zhang

In this paper, we present an initial attempt to learn evolution PDEs from data. Inspired by the latest development of neural network designs in deep learning, we propose a new feed-forward deep network, called PDE-Net, to fulfill two…

数值分析 · 数学 2018-01-03 Zichao Long , Yiping Lu , Xianzhong Ma , Bin Dong

Given an inverse problem with a normalizing flow prior, we wish to estimate the distribution of the underlying signal conditioned on the observations. We approach this problem as a task of conditional inference on the pre-trained…

机器学习 · 统计学 2021-06-16 Jay Whang , Erik M. Lindgren , Alexandros G. Dimakis

Matching in causal inference from observational data aims to construct treatment and control groups with similar distributions of covariates, thereby reducing confounding and ensuring an unbiased estimation of treatment effects. This…

人工智能 · 计算机科学 2025-04-15 Sahil Shikalgar , Md. Noor-E-Alam

We introduce a learning-based approach to detect repeatable keypoints under drastic imaging changes of weather and lighting conditions to which state-of-the-art keypoint detectors are surprisingly sensitive. We first identify good keypoint…

计算机视觉与模式识别 · 计算机科学 2015-11-16 Yannick Verdie , Kwang Moo Yi , Pascal Fua , Vincent Lepetit

Accuracy and generalization capabilities are key objectives when learning dynamical system models. To obtain such models from limited data, current works exploit prior knowledge and assumptions about the system. However, the fusion of…