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Reduced-order models based on level-set methods are widely used tools to qualitatively capture and track the nonlinear dynamics of an interface. The aim of this paper is to develop a physics-informed, data-driven, statistically rigorous…

Computational Physics · Physics 2019-09-20 Hans Yu , Matthew P. Juniper , Luca Magri

An intrinsic property of almost any physical measuring device is that it makes observations which are slightly blurred in time. We consider a nudging-based approach for data assimilation that constructs an approximate solution based on a…

Analysis of PDEs · Mathematics 2018-09-05 Michael S. Jolly , Vincent R. Martinez , Eric J. Olson , Edriss S. Titi

Accurate estimation of error covariances (both background and observation) is crucial for efficient observation compression approaches in data assimilation of large-scale dynamical problems. We propose a new combination of a covariance…

Numerical Analysis · Mathematics 2021-06-11 Sibo Cheng , Didier Lucor , Jean-Philippe Argaud

Deep Neural Networks (DNNs) have recently been achieving state-of-the-art performance on a variety of computer vision related tasks. However, their computational cost limits their ability to be implemented in embedded systems with…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Laurent Dillard , Yosuke Shinya , Taiji Suzuki

Data Augmentation (DA) is known to improve the generalizability of deep neural networks. Most existing DA techniques naively add a certain number of augmented samples without considering the quality and the added computational cost of these…

Machine Learning · Computer Science 2022-03-18 Ehsan Kamalloo , Mehdi Rezagholizadeh , Ali Ghodsi

In recent years, one of the most popular techniques in the computer vision community has been the deep learning technique. As a data-driven technique, deep model requires enormous amounts of accurately labelled training data, which is often…

Computer Vision and Pattern Recognition · Computer Science 2022-10-10 Zihan Yang , Richard O. Sinnott , James Bailey , Qiuhong Ke

Data assimilation (DA) is widely used to combine physical knowledge and observations. It is nowadays commonly used in geosciences to perform parametric calibration. In a context of climate change, old calibrations can not necessarily be…

Machine Learning · Statistics 2021-06-23 Rem-Sophia Mouradi , Cédric Goeury , Olivier Thual , Fabrice Zaoui , Pablo Tassi

Data assimilation is a vital component in modern global medium-range weather forecasting systems to obtain the best estimation of the atmospheric state by combining the short-term forecast and observations. Recently, AI-based data…

Machine Learning · Computer Science 2024-06-05 Kun Chen , Tao Chen , Peng Ye , Hao Chen , Kang Chen , Tao Han , Wanli Ouyang , Lei Bai

Training data attribution (TDA) methods aim to identify which training examples influence a model's predictions on specific test data most. By quantifying these influences, TDA supports critical applications such as data debugging,…

Machine Learning · Computer Science 2025-05-30 Xingyuan Pan , Chenlu Ye , Joseph Melkonian , Jiaqi W. Ma , Tong Zhang

We assess the utility of an optimization-based data assimilation (D.A.) technique for treating the problem of nonlinear neutrino flavor transformation in core collapse supernovae. D.A. uses measurements obtained from a physical system to…

High Energy Astrophysical Phenomena · Physics 2017-10-18 Eve Armstrong , Amol V. Patwardhan , Lucas Johns , Chad T. Kishimoto , Henry D. I. Abarbanel , George M. Fuller

Domain adaption (DA) allows machine learning methods trained on data sampled from one distribution to be applied to data sampled from another. It is thus of great practical importance to the application of such methods. Despite the fact…

Computer Vision and Pattern Recognition · Computer Science 2017-07-20 Hao Lu , Lei Zhang , Zhiguo Cao , Wei Wei , Ke Xian , Chunhua Shen , Anton van den Hengel

An alternative data-driven modeling approach has been proposed and employed to gain fundamental insights into robot motion interaction with granular terrain at certain length scales. The approach is based on an integration of dimension…

Robotics · Computer Science 2025-06-13 Guanjin Wang , Xiangxue Zhao , Shapour Azarm , Balakumar Balachandran

Data Augmentation (DA) -- enriching training data by adding synthetic samples -- is a technique widely adopted in Computer Vision (CV) and Natural Language Processing (NLP) tasks to improve models performance. Yet, DA has struggled to gain…

Machine Learning · Computer Science 2024-01-24 Chao Wang , Alessandro Finamore , Pietro Michiardi , Massimo Gallo , Dario Rossi

Continuous data assimilation (CDA) techniques, most notably the nudging approach proposed by Azouani, Olson, and Titi (AOT), have been shown to be very successful in deterministic frameworks for achieving long-time synchronization between…

Probability · Mathematics 2026-04-20 Kush Kinra

Errors in the representation of clouds in convection-permitting numerical weather prediction models can be introduced by different sources. These can be the forcing and boundary conditions, the representation of orography, the accuracy of…

Atmospheric and Oceanic Physics · Physics 2022-03-14 Stefanie Legler , Tijana Janjic

Data Attribution (DA) is an emerging approach in the field of eXplainable Artificial Intelligence (XAI), aiming to identify influential training datapoints which determine model outputs. It seeks to provide transparency about the model and…

Machine Learning · Computer Science 2025-12-22 Galip Ümit Yolcu , Moritz Weckbecker , Thomas Wiegand , Wojciech Samek , Sebastian Lapuschkin

This paper investigates image inpainting with preference alignment. Instead of introducing a novel method, we go back to basics and revisit fundamental problems in achieving such alignment. We leverage the prominent direct preference…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Yutao Shen , Junkun Yuan , Toru Aonishi , Hideki Nakayama , Yue Ma

Unsupervised domain adaptation aims to transfer and adapt knowledge learned from a labeled source domain to an unlabeled target domain. Key components of unsupervised domain adaptation include: (a) maximizing performance on the target, and…

Machine Learning · Statistics 2019-12-20 Kowshik Thopalli , Jayaraman J. Thiagarajan , Rushil Anirudh , Pavan Turaga

Deep learning (DL) techniques are highly effective for defect detection from images. Training DL classification models, however, requires vast amounts of labeled data which is often expensive to collect. In many cases, not only the…

Computer Vision and Pattern Recognition · Computer Science 2023-06-02 Adrian Shuai Li , Elisa Bertino , Rih-Teng Wu , Ting-Yan Wu

Unsupervised Domain Adaptation (DA) exploits the supervision of a label-rich source dataset to make predictions on an unlabeled target dataset by aligning the two data distributions. In robotics, DA is used to take advantage of…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Mohammad Reza Loghmani , Luca Robbiano , Mirco Planamente , Kiru Park , Barbara Caputo , Markus Vincze
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