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The symmetrical quasi-classical dynamics method based on the Meyer-Miller mapping Hamiltonian (MM-SQC) shows the great potential in the treatment of the nonadiabatic dynamics of complex systems. We performed the comprehensive benchmark…

化学物理 · 物理学 2019-03-12 Yu Xie , Jie Zheng , Zhenggang Lan

The machine learning approaches are applied in the dynamical simulation of open quantum systems. The long short-term memory recurrent neural network (LSTM-RNN) models are used to simulate the long-time quantum dynamics, which are built…

量子物理 · 物理学 2022-05-10 Kunni Lin , Jiawei Peng , Chao Xu , Feng Long Gu , Zhenggang Lan

A symmetrical quasiclassical (SQC) dynamics approach based on the Li-Miller (LM) mapping Hamiltonian (SQC-LM) was employed to describe nonadiabatic dynamics. In principle, the different initial sampling procedures may be applied in the…

化学物理 · 物理学 2020-01-08 Jie Zheng , Yu Xie , Sheng-shi Jiang , Yun-ze Long , Xin Ning , Zhenggang Lan

Recurrent neural networks (RNNs) have led to breakthroughs in natural language processing and speech recognition, wherein hundreds of millions of people use such tools on a daily basis through smartphones, email servers and other avenues.…

无序系统与神经网络 · 物理学 2020-12-02 Sun-Ting Tsai , En-Jui Kuo , Pratyush Tiwary

The recurrent neural network with the long short-term memory cell (LSTM-NN) is employed to simulate the long-time dynamics of open quantum system. The bootstrap method is applied in the LSTM-NN construction and prediction, which provides a…

化学物理 · 物理学 2021-11-05 Kunni Lin , Jiawei Peng , Feng Long Gu , Zhenggang Lan

Inspired by the success of the Transformer architecture in natural language processing and computer vision, we investigate the use of Transformers in Reinforcement Learning (RL), specifically in modeling the environment's dynamics using…

机器学习 · 计算机科学 2024-11-19 Mostafa Kotb , Cornelius Weber , Muhammad Burhan Hafez , Stefan Wermter

We introduce Masked Trajectory Models (MTM) as a generic abstraction for sequential decision making. MTM takes a trajectory, such as a state-action sequence, and aims to reconstruct the trajectory conditioned on random subsets of the same…

机器学习 · 计算机科学 2023-05-05 Philipp Wu , Arjun Majumdar , Kevin Stone , Yixin Lin , Igor Mordatch , Pieter Abbeel , Aravind Rajeswaran

Machine-learning (ML) force fields enable large-scale simulations with near-first-principles accuracy at substantially reduced computational cost. Recent work has extended ML force-field approaches to adiabatic dynamical simulations of…

强关联电子 · 物理学 2026-01-08 Yunhao Fan , Gia-Wei Chern

We investigate the applicability of machine learning based reduced order model (ML-ROM) to three-dimensional complex flows. As an example, we consider a turbulent channel flow at the friction Reynolds number of $Re_\tau=110$ in a minimum…

流体动力学 · 物理学 2021-12-08 Taichi Nakamura , Kai Fukami , Kazuto Hasegawa , Yusuke Nabae , Koji Fukagata

The equations of classical mechanics can be used to model the time evolution of countless physical systems, from the astrophysical to the atomic scale. Accurate numerical integration requires small time steps, which limits the computational…

化学物理 · 物理学 2026-03-09 Filippo Bigi , Johannes Spies , Michele Ceriotti

Deep learning (DL) methods have outperformed parametric models such as historical average, ARIMA and variants in predicting traffic variables into short and near-short future, that are critical for traffic management. Specifically,…

机器学习 · 计算机科学 2023-07-18 Agnimitra Sengupta , Adway Das , S. Ilgin Guler

Numerical modeling of different structural materials that have highly nonlinear behaviors has always been a challenging problem in engineering disciplines. Experimental data is commonly used to characterize this behavior. This study aims to…

机器学习 · 计算机科学 2020-07-28 Elif Ecem Bas , Denis Aslangil , Mohamed A. Moustafa

Machine learning (ML) has revolutionized medical prognostics by integrating advanced algorithms with clinical data to enhance disease prediction, risk assessment, and patient outcome forecasting. This comprehensive review critically…

机器学习 · 计算机科学 2024-08-06 Michael Fascia

Molecular dynamics simulations are a cornerstone in science, allowing to investigate from the system's thermodynamics to analyse intricate molecular interactions. In general, to create extended molecular trajectories can be a…

计算物理 · 物理学 2022-06-22 Ludwig Winkler , Klaus-Robert Müller , Huziel E. Sauceda

Data-driven approaches to automated machine condition monitoring are gaining popularity due to advancements made in sensing technologies and computing algorithms. This paper proposes the use of a deep learning model, based on Long…

信号处理 · 电气工程与系统科学 2019-07-30 Jianlei Zhang , Binil Starly

To accurately study chemical reactions in the condensed phase or within enzymes, both a quantum-mechanical description and sufficient configurational sampling is required to reach converged estimates. Here, quantum mechanics/molecular…

化学物理 · 物理学 2022-10-05 Albert Hofstetter , Lennard Böselt , Sereina Riniker

Introduction Quantum Convolutional Neural Network (QCNN)-Long Short-Term Memory (LSTM) models were studied to provide sequential relationships for each timepoint in MRIs of patients with Multiple Sclerosis (MS). In this pilot study, we…

机器学习 · 计算机科学 2024-01-23 John D. Mayfield , Issam El Naqa

Model-based reinforcement learning (RL) has shown great potential in various control tasks in terms of both sample-efficiency and final performance. However, learning a generalizable dynamics model robust to changes in dynamics remains a…

机器学习 · 计算机科学 2020-10-27 Younggyo Seo , Kimin Lee , Ignasi Clavera , Thanard Kurutach , Jinwoo Shin , Pieter Abbeel

It has been recently shown that supervised machine learning (ML) algorithms can accurately and efficiently predict the long-time populations dynamics of dissipative quantum systems given only short-time population dynamics. In the present…

This work proposes a machine-learning framework for modeling the error incurred by approximate solutions to parameterized dynamical systems. In particular, we extend the machine-learning error models (MLEM) framework proposed in Ref. 15 to…

数值分析 · 数学 2020-04-22 Eric J. Parish , Kevin T. Carlberg
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