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We study two-stage stochastic optimization models with mixed-integer decision variables appearing in both stages. For these models, dual decomposition enables parallel computing implementation and can quickly provide a lower bound for the…

最优化与控制 · 数学 2026-05-15 Pengyu Zhang , Ruiwei Jiang

Dissipative particle dynamics (DPD) is a novel particle method for mesoscale modeling of complex fluids. DPD particles are often thought to represent packets of real atoms, and the physical scale probed in DPD models are determined by the…

化学物理 · 物理学 2016-10-18 R. Qiao , P. He

The ultimate semiclassical wave packet propagation technique is a complex, time-dependent WBK method known as generalized Gaussian wave packet dynamics (GGWPD). It requires overcoming many technical difficulties in order to be carried out…

量子物理 · 物理学 2016-11-10 Harinder Pal , Manan Vyas , Steven Tomsovic

While diffusion models significantly improve the perceptual quality of super-resolved images, they usually require a large number of sampling steps, resulting in high computational costs and long inference times. Recent efforts have…

计算机视觉与模式识别 · 计算机科学 2024-11-22 Yong Liu , Hang Dong , Jinshan Pan , Qingji Dong , Kai Chen , Rongxiang Zhang , Lean Fu , Fei Wang

Fault diagnosis is crucial in monitoring machines within industrial processes. With the increasing complexity of working conditions and demand for safety during production, diverse diagnosis methods are required, and an integrated fault…

人工智能 · 计算机科学 2024-10-11 Xingyue Wang , Hanrong Zhang , Xinlong Qiao , Ke Ma , Shuting Tao , Peng Peng , Hongwei Wang

While exogenous variables have a major impact on performance improvement in time series analysis, inter-series correlation and time dependence among them are rarely considered in the present continuous methods. The dynamical systems of…

机器学习 · 计算机科学 2023-09-26 Penglei Gao , Xi Yang , Rui Zhang , Ping Guo , John Y. Goulermas , Kaizhu Huang

Dynamical System (DS) based Learning from Demonstration (LfD) allows learning of reactive motion policies with stability and convergence guarantees from a few trajectories. Yet, current DS learning techniques lack the flexibility to…

机器人学 · 计算机科学 2023-09-06 Tianyu Li , Nadia Figueroa

Learning a Markov Decision Process (MDP) from a fixed batch of trajectories is a non-trivial task whose outcome's quality depends on both the amount and the diversity of the sampled regions of the state-action space. Yet, many MDPs are…

机器学习 · 计算机科学 2022-03-08 Giorgio Angelotti , Nicolas Drougard , Caroline P. C. Chanel

The prediction of the drop size distribution (DSD) resulting from liquid atomization is key to the optimization of multi-phase flows, from gas-turbine propulsion, through agriculture, to healthcare. Obtaining high-fidelity data of liquid…

流体动力学 · 物理学 2023-05-30 Tullio Traverso , Thomas Abadie , Omar K. Matar , Luca Magri

In the $15$-puzzle game, $15$ labeled square tiles are reconfigured on a $4\times 4$ board through an escort, wherein each (time) step, a single tile neighboring it may slide into it, leaving the space previously occupied by the tile as the…

机器人学 · 计算机科学 2023-12-19 Marcus Gozon , Jingjin Yu

We develop deep Poisson-gamma dynamical systems (DPGDS) to model sequentially observed multivariate count data, improving previously proposed models by not only mining deep hierarchical latent structure from the data, but also capturing…

机器学习 · 统计学 2019-01-03 Dandan Guo , Bo Chen , Hao Zhang , Mingyuan Zhou

We revisit the evolution of generalised parton distributions (GPDs) in momentum space. We formulate the evolution kernels at one-loop in perturbative QCD (pQCD) in a form suitable for numerical implementation and that allows for an accurate…

高能物理 - 唯象学 · 物理学 2022-10-12 Valerio Bertone , Hervé Dutrieux , Cédric Mezrag , José M. Morgado , Hervé Moutarde

In this paper, we extend the Generalized Finite Difference Method (GFDM) on unknown compact submanifolds of the Euclidean domain, identified by randomly sampled data that (almost surely) lie on the interior of the manifolds. Theoretically,…

数值分析 · 数学 2023-07-18 Shixiao W. Jiang , Rongji Li , Qile Yan , John Harlim

A topological computation method, called the MGSTD method, is applied to time-series data obtained from meteorological measurement. The method gives decomposition of the dynamics into invariant sets and gradient-like transitions between…

动力系统 · 数学 2019-05-31 Hidetoshi Morita , Masaru Inatsu , Hiroshi Kokubu

Predicting the end-of-life or remaining useful life of batteries in electric vehicles is a critical and challenging problem, predominantly approached in recent years using machine learning to predict the evolution of the state-of-health…

机器学习 · 计算机科学 2023-06-05 Wei W. Xing , Ziyang Zhang , Akeel A. Shah

We give a brief overview on the theory and phenomenology of generalized parton distributions (GPDs), including the recently developed framework of single-diffractive hard exclusive process for matching GPDs to experimental observables. We…

高能物理 - 唯象学 · 物理学 2024-10-24 Jian-Wei Qiu , Zhite Yu

Long-term action anticipation has become an important task for many applications such as autonomous driving and human-robot interaction. Unlike short-term anticipation, predicting more actions into the future imposes a real challenge with…

计算机视觉与模式识别 · 计算机科学 2024-07-17 Olga Zatsarynna , Emad Bahrami , Yazan Abu Farha , Gianpiero Francesca , Juergen Gall

We study numerical methods for dissipative particle dynamics (DPD), which is a system of stochastic differential equations and a popular stochastic momentum-conserving thermostat for simulating complex hydrodynamic behavior at mesoscales.…

数值分析 · 数学 2021-06-08 Xiaocheng Shang

Understanding molecular structure, dynamics, and reactivity requires bridging processes that occur across widely separated time scales. Conventional molecular dynamics simulations provide atomistic resolution, but their femtosecond time…

化学物理 · 物理学 2025-10-10 Juan Viguera Diez , Mathias Schreiner , Simon Olsson

Gradient Boosted Decision Trees (GBDT) is a very successful ensemble learning algorithm widely used across a variety of applications. Recently, several variants of GBDT training algorithms and implementations have been designed and heavily…

机器学习 · 计算机科学 2019-06-27 Yu Shi , Jian Li , Zhize Li