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This paper presents a novel approach for propagating uncertainties in dynamical systems building on high-order Taylor expansions of the flow and moment-generating functions (MGFs). Unlike prior methods that focus on Gaussian distributions,…

空间物理 · 物理学 2025-04-08 Giacomo Acciarini , Nicola Baresi , David Lloyd , Dario Izzo

Accurate forecasting of spatiotemporal data remains challenging due to complex spatial dependencies and temporal dynamics. The inherent uncertainty and variability in such data often render deterministic models insufficient, prompting a…

机器学习 · 计算机科学 2024-11-05 Mingze Gong , Lei Chen , Jia Li

The aim of this work is to develop a new numerical method to overcome the computational difficulties of numerical simulation of unsaturated impregnation in porous media. The numerical analysis by classical methods (F.E.M, theta-method, ...)…

计算物理 · 物理学 2018-06-25 Anh Khoa Nguyen , Eric Blond , Thomas Sayet , Athanasios Batakis , E. De Bilbao , Minh Duc Duong

Stochastic Gradient Descent (SGD) is a known stochastic iterative method popular for large-scale convex optimization problems due to its simple implementation and scalability. Some objectives, such as those found in complex-valued neural…

机器学习 · 计算机科学 2026-05-26 Natanael Alpay , Emeric Battaglia

Over the past twenty years, artificial Gene Regulatory Networks (GRNs) have shown their capacity to solve real-world problems in various domains such as agent control, signal processing and artificial life experiments. They have also…

神经与进化计算 · 计算机科学 2018-07-17 Dennis G Wilson , Kyle Harrington , Sylvain Cussat-Blanc , Hervé Luga

Gaussian Processes (GPs) are expressive models for capturing signal statistics and expressing prediction uncertainty. As a result, the robotics community has gathered interest in leveraging these methods for inference, planning, and…

机器人学 · 计算机科学 2023-08-29 Francesco Crocetti , Jeffrey Mao , Alessandro Saviolo , Gabriele Costante , Giuseppe Loianno

In this work, we present DiPPeR, a novel and fast 2D path planning framework for quadrupedal locomotion, leveraging diffusion-driven techniques. Our contributions include a scalable dataset generator for map images and corresponding…

机器人学 · 计算机科学 2024-05-30 Jianwei Liu , Maria Stamatopoulou , Dimitrios Kanoulas

Sequential robot manipulation tasks require finding collision-free trajectories that satisfy geometric constraints across multiple object interactions in potentially high-dimensional configuration spaces. Solving these problems in real-time…

机器人学 · 计算机科学 2025-10-14 Lucas Chen , Shrutheesh Raman Iyer , Zachary Kingston

Modern trajectory optimization based approaches to motion planning are fast, easy to implement, and effective on a wide range of robotics tasks. However, trajectory optimization algorithms have parameters that are typically set in advance…

机器人学 · 计算机科学 2020-03-12 Mohak Bhardwaj , Byron Boots , Mustafa Mukadam

We consider the problem of minimizing the convergence time for decentralized federated learning (DFL) in wireless networks under broadcast communications, with focus on mixing matrix design. The mixing matrix is a critical hyperparameter…

机器学习 · 计算机科学 2026-04-20 Tuan Nguyen , Ting He

Recent advances in robotic manipulation have highlighted the effectiveness of learning from demonstration. However, while end-to-end policies excel in expressivity and flexibility, they struggle both in generalizing to novel object…

机器人学 · 计算机科学 2026-04-14 Lyuxing He , Eric Cai , Shobhit Aggarwal , Jianjun Wang , David Held

4D content generation has achieved remarkable progress recently. However, existing methods suffer from long optimization times, a lack of motion controllability, and a low quality of details. In this paper, we introduce DreamGaussian4D…

计算机视觉与模式识别 · 计算机科学 2024-06-11 Jiawei Ren , Liang Pan , Jiaxiang Tang , Chi Zhang , Ang Cao , Gang Zeng , Ziwei Liu

We consider distributed optimization under communication constraints for training deep learning models. We propose a new algorithm, whose parameter updates rely on two forces: a regular gradient step, and a corrective direction dictated by…

机器学习 · 计算机科学 2022-04-29 Yunfei Teng , Wenbo Gao , Francois Chalus , Anna Choromanska , Donald Goldfarb , Adrian Weller

The state-space models (SSMs) are widely utilized in the analysis of time-series data. SSMs rely on an explicit definition of the state and observation processes. Characterizing these processes is not always easy and becomes a modeling…

机器学习 · 计算机科学 2023-07-04 Mohammad R. Rezaei , Milos R. Popovic , Milad Lankarany , Ali Yousefi

Since upcoming telescopes will observe thousands of strong lensing systems, creating fully-automated analysis pipelines for these images becomes increasingly important. In this work, we make a step towards that direction by developing the…

宇宙学与河外天体物理 · 物理学 2020-06-03 Marco Chianese , Adam Coogan , Paul Hofma , Sydney Otten , Christoph Weniger

The modeling of high-dimensional spatio-temporal processes presents a fundamental dichotomy between the probabilistic rigor of classical geostatistics and the flexible, high-capacity representations of deep learning. While Gaussian…

机器学习 · 计算机科学 2025-12-22 Yuri Calleo

Deep Gaussian Processes (DGPs) combine the expressiveness of Deep Neural Networks (DNNs) with quantified uncertainty of Gaussian Processes (GPs). Expressive power and intractable inference both result from the non-Gaussian distribution over…

机器学习 · 计算机科学 2020-02-26 Chi-Ken Lu , Scott Cheng-Hsin Yang , Xiaoran Hao , Patrick Shafto

Ray tracing is a widely used deterministic method for radio propagation simulations, capable of producing physically accurate multipath components. The accuracy depends on the quality of the environment model and its electromagnetic…

信号处理 · 电气工程与系统科学 2025-07-08 Niklas Vaara , Pekka Sangi , Miguel Bordallo López , Janne Heikkilä

A new technique of global optimization and its applications in particular to neural networks are presented. The algorithm is also compared to other global optimization algorithms such as Gradient descent (GD), Monte Carlo (MC), Genetic…

分布式、并行与集群计算 · 计算机科学 2020-12-18 Homayoun Valafar , Okan K. Ersoy , Faramarz Valafar

In modern wireless communication systems, radio propagation modeling to estimate pathloss has always been a fundamental task in system design and optimization. The state-of-the-art empirical propagation models are based on measurements in…

网络与互联网体系结构 · 计算机科学 2022-02-08 Usama Masood , Hasan Farooq , Ali Imran , Adnan Abu-Dayya
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