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The behavior of recurrent neural network for the data-driven simulation of noisy dynamical systems is studied by training a set of Long Short-Term Memory Networks (LSTM) on the Mackey-Glass time series with a wide range of noise level. It…

神经与进化计算 · 计算机科学 2019-04-11 Kyongmin Yeo

The Synthetic Corona Outflow Model (SynCOM), an empirical model, simulates the solar corona's dynamics to match high-resolution observations, providing a useful resource for testing velocity measurement algorithms. SynCOM generates…

太阳与恒星天体物理 · 物理学 2024-11-11 Valmir P. Moraes Filho , Vadim M. Uritsky , Barbara J. Thompson , Sarah E. Gibson , Craig E. DeForest

In non-stationary environments, learning machines usually confront the domain adaptation scenario where the data distribution does change over time. Previous domain adaptation works have achieved great success in theory and practice.…

机器学习 · 计算机科学 2020-05-06 Zhongyi Han , Xian-Jin Gui , Chaoran Cui , Yilong Yin

The aim of this paper is to describe a novel non-parametric noise reduction technique from the point of view of Bayesian inference that may automatically improve the signal-to-noise ratio of one- and two-dimensional data, such as e.g.…

天体物理仪器与方法 · 物理学 2023-07-07 Pablo M Sanchez-Alarcon , Yago Ascasibar Sequeiros

The performance of machine learning models often relies on large labeled datasets; however, data collected from diverse sources can contain label noise. Recent work has shown that, in noisy settings, there may exist a subset of the training…

机器学习 · 计算机科学 2026-05-05 Kumar Shubham , Pavan Karjol , Kiran M K , Prathosh AP

Robust generalization under climate change remains a major challenge for machine learning applications in climate science. Most existing approaches struggle to extrapolate beyond the climate they were trained on, leading to a strong…

大气与海洋物理 · 物理学 2025-09-03 Shuchang Liu , Paul A. O'Gorman

Frequency estimation is a fundamental problem in signal processing, with applications in radar imaging, underwater acoustics, seismic imaging, and spectroscopy. The goal is to estimate the frequency of each component in a multisinusoidal…

机器学习 · 计算机科学 2021-02-04 Gautier Izacard , Sreyas Mohan , Carlos Fernandez-Granda

Scaled sparse linear regression jointly estimates the regression coefficients and noise level in a linear model. It chooses an equilibrium with a sparse regression method by iteratively estimating the noise level via the mean residual…

机器学习 · 统计学 2012-06-22 Tingni Sun , Cun-Hui Zhang

Causality analysis is a powerful tool for determining cause-and-effect relationships between variables in a system by quantifying the influence of one variable on another. Despite significant advancements in the field, many existing studies…

数值分析 · 数学 2024-09-12 Justin Lien

In many real-world classification tasks, label noise is an unavoidable issue that adversely affects the generalization error of machine learning models. Additionally, evaluating how methods handle such noise is complicated, as the effect…

机器学习 · 计算机科学 2024-09-24 Sjoerd de Vries , Dirk Thierens

A key step in any resonant anomaly detection search is accurate modeling of the background distribution in each signal region. Data-driven methods like CATHODE accomplish this by training separate generative models on the complement of each…

高能物理 - 唯象学 · 物理学 2025-04-08 Ranit Das , David Shih

Channel estimation is a fundamental challenge in massive multiple-input multiple-output systems, where estimation accuracy governs the spectral efficiency and link reliability. In this work, we introduce Recursive Flow (RC-Flow), a novel…

Oversampling is a common characteristic of data representing dynamic networks. It introduces noise into representations of dynamic networks, but there has been little work so far to compensate for it. Oversampling can affect the quality of…

社会与信息网络 · 计算机科学 2015-08-12 Benjamin Fish , Rajmonda S. Caceres

Forecasting with multivariate time series, which aims to predict future values given previous and current several univariate time series data, has been studied for decades, with one example being ARIMA. Because it is difficult to measure…

人工智能 · 计算机科学 2020-10-19 Youngjin Park , Deokjun Eom , Byoungki Seo , Jaesik Choi

Background: Current mathematical quantification methods for beam symmetry are highly sensitive to noise, especially in beam profiles with significant variation. Purpose: This study evaluates the accuracy of standard radiotherapy beam…

医学物理 · 物理学 2025-09-30 Dalton H Bermudez , Wesley Culberson

Reconstructing the equation of motion and thus the network topology of a system from time series is a very important problem. Although many powerful methods have been developed, it remains a great challenge to deal with systems in high…

适应与自组织系统 · 物理学 2023-08-16 Zishuo Yan , Lili Gui , Kun Xu , Yueheng Lan

In this paper we consider sparse and identifiable linear latent variable (factor) and linear Bayesian network models for parsimonious analysis of multivariate data. We propose a computationally efficient method for joint parameter and model…

机器学习 · 统计学 2011-06-24 Ricardo Henao , Ole Winther

Falsely annotated samples, also known as noisy labels, can significantly harm the performance of deep learning models. Two main approaches for learning with noisy labels are global noise estimation and data filtering. Global noise…

机器学习 · 计算机科学 2025-07-31 Yuval Grinberg , Nimrod Harel , Jacob Goldberger , Ofir Lindenbaum

Climate field reconstructions (CFR) attempt to estimate spatiotemporal fields of climate variables in the past using climate proxies such as tree rings, ice cores, and corals. Data Assimilation (DA) methods are a recent and promising new…

统计方法学 · 统计学 2020-08-06 Trevor Harris , Bo Li , Nathan Steiger , Jason Smerdon , Naveen Narisetty , Derek Tucker

We consider the problem of recovering of continuous multi-dimensional functions from the noisy observations over the regular grid. Our focus is at the adaptive estimation in the case when the function can be well recovered using a linear…

统计理论 · 数学 2009-03-06 Anatoli Iouditski , Arkadii S. Nemirovski