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This paper proposes a methodology to estimate characteristic functions of stochastic differential equations that are defined over polynomials and driven by L\'evy noise. For such systems, the time evolution of the characteristic function is…

最优化与控制 · 数学 2017-11-20 Khem Raj Ghusinga , Andrew Lamperski , Abhyudai Singh

This article investigates the least squares estimators (LSE) for the unknown parameters in stochastic differential equations (SDEs) that are affected by L\'evy noise, particularly when the sample paths are sparse. Specifically, given $n$…

统计方法学 · 统计学 2026-01-01 Brijesh Kumar Jha , Subhra Sankar Dhar , Akash Ashirbad Panda

Deploying LLMs raises two coupled challenges: (1) monitoring--estimating where a model underperforms as traffic and domains drift--and (2) improvement--prioritizing data acquisition to close the largest performance gaps. We test whether an…

计算与语言 · 计算机科学 2026-05-27 Pedro Memoli Buffa , Luciano Del Corro

Audio Sentiment Analysis is a popular research area which extends the conventional text-based sentiment analysis to depend on the effectiveness of acoustic features extracted from speech. However, current progress on audio sentiment…

音频与语音处理 · 电气工程与系统科学 2019-08-01 Feiyang Chen , Ziqian Luo

Recurrent Neural Networks (RNNs) have become the state-of-the-art choice for extracting patterns from temporal sequences. However, current RNN models are ill-suited to process irregularly sampled data triggered by events generated in…

机器学习 · 计算机科学 2016-11-01 Daniel Neil , Michael Pfeiffer , Shih-Chii Liu

I propose a novel framework that integrates stochastic differential equations (SDEs) with deep generative models to improve uncertainty quantification in machine learning applications involving structured and temporal data. This approach,…

机器学习 · 统计学 2026-01-09 James Rice

Recently, outstanding identification rates in image classification tasks were achieved by convolutional neural networks (CNNs). to use such skills, selective CNNs trained on a dataset of well-known images of metal surface defects captured…

计算机视觉与模式识别 · 计算机科学 2024-06-24 Nadeem Jabbar Chaudhry , M. Bilal Khan , M. Javaid Iqbal , Siddiqui Muhammad Yasir

Training deep neural networks (DNNs) from noisy labels is an important and challenging task. However, most existing approaches focus on the corrupted labels and ignore the importance of inherent data structure. To bridge the gap between…

机器学习 · 计算机科学 2024-05-03 Zijia Wang , Wenbin Yang , Zhisong Liu , Zhen Jia

We focus in this paper on the stochastic stabilization problems of PDEs by Levy noise. Sufficient conditions under which the perturbed systems decay exponentially with a general rate function are provided and some examples are constructed…

概率论 · 数学 2011-04-15 Jianhai Bao , Chenggui Yuan

This paper studies stabilities of stochastic differential equation (SDE) driven by time-changed L\'evy noise in both probability and moment sense. This provides more flexibility in modeling schemes in application areas including physics,…

概率论 · 数学 2016-04-27 Erkan Nane , Yinan Ni

Neural network models become increasingly popular as dynamic modeling tools in the control community. They have many appealing features including nonlinear structures, being able to approximate any functions. While most researchers hold…

机器学习 · 计算机科学 2023-10-23 Jinming Zhou , Yucai Zhu

Time-varying linear state-space models are powerful tools for obtaining mathematically interpretable representations of neural signals. For example, switching and decomposed models describe complex systems using latent variables that evolve…

Hyperparameter tuning is one of the essential steps to guarantee the convergence of machine learning models. We argue that intuition about the optimal choice of hyperparameters for stochastic gradient descent can be obtained by studying a…

无序系统与神经网络 · 物理学 2025-12-12 Chanju Park , Biagio Lucini , Gert Aarts

Disparity estimation is a difficult problem in stereo vision because the correspondence technique fails in images with textureless and repetitive regions. Recent body of work using deep convolutional neural networks (CNN) overcomes this…

计算机视觉与模式识别 · 计算机科学 2018-05-22 Rowel Atienza

This work presents a new approach for detection and exclusion (or de-weighting) of pseudo-range measurements from the Global Navigation Satellite System (GNSS) in order to improve the accuracy of single-epoch positioning, which is an…

信号处理 · 电气工程与系统科学 2023-06-12 Ibrahim Sbeity , Christophe Villien , Christophe Combettes , Benoît Denis , E Veronica Belmega , Marwa Chafii

The Sequential Sentence Classification task within the domain of medical abstracts, termed as SSC, involves the categorization of sentences into pre-defined headings based on their roles in conveying critical information in the abstract. In…

计算与语言 · 计算机科学 2024-06-03 Phat Lam , Lam Pham , Tin Nguyen , Hieu Tang , Michael Seidl , Medina Andresel , Alexander Schindler

L\'evy processes are widely used in financial modeling due to their ability to capture discontinuities and heavy tails, which are common in high-frequency asset return data. However, parameter estimation remains a challenge when associated…

机器学习 · 统计学 2025-10-01 Nicolas Coloma , William Kleiber

Stochastic partial differential equations (SPDEs) are ubiquitous in engineering and computational sciences. The stochasticity arises as a consequence of uncertainty in input parameters, constitutive relations, initial/boundary conditions,…

数据分析、统计与概率 · 物理学 2020-01-29 Sharmila Karumuri , Rohit Tripathy , Ilias Bilionis , Jitesh Panchal

Convolutional Neural Networks (CNNs) have demonstrated superiority in learning patterns, but are sensitive to label noises and may overfit noisy labels during training. The early stopping strategy averts updating CNNs during the early…

计算机视觉与模式识别 · 计算机科学 2022-12-08 Huaxi Huang , Hui Kang , Sheng Liu , Olivier Salvado , Thierry Rakotoarivelo , Dadong Wang , Tongliang Liu

This study presents two models to optimize pressure management in water distribution networks. The first model forecasts pressure at distribution points and compares predictions with actual data to detect anomalies such as leaks and…

系统与控制 · 电气工程与系统科学 2024-10-15 Tran Dang Khoa