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This study evaluates the efficacy of two machine learning (ML) techniques, namely artificial neural networks (ANN) and gene expression programming (GEP) that use data-driven modeling to predict wall pressure spectra (WPS) underneath…

流体动力学 · 物理学 2024-02-27 Nachiketa Narayan Kurhade , Nagabhushana Rao Vadlamani , Akash Haridas

We investigate the reconstruction of a turbulent flow field in the atmospheric boundary layer from a time series of lidar measurements, using Large-Eddy Simulations (LES) and a 4D-Var data assimilation algorithm. This leads to an…

流体动力学 · 物理学 2020-11-17 Pieter Bauweraerts , Johan Meyers

Large Eddy Simulations of a flow at a moderate Reynolds number over and around a three-dimensional hill have been performed. The main aim of the simulations was to study the effects of various inflow conditions (boundary layer thickness and…

流体动力学 · 物理学 2017-08-24 Manuel Garcia-Villalba , Jan G. Wissink , Wolfgang Rodi

This work presents a review of the current state of research in data-driven turbulence closure modeling. It offers a perspective on the challenges and open issues, but also on the advantages and promises of machine learning methods applied…

计算工程、金融与科学 · 计算机科学 2022-12-21 Andrea Beck , Marius Kurz

The field of learning analytics has made notable strides in automating the detection of complex learning processes in multimodal data. However, most advancements have focused on individualized problem-solving instead of collaborative,…

In this work, we perform a comprehensive study of the machine learning (ML) methods for the purpose of characterising the quantum set of correlations. As our main focus is on assessing the usefulness and effectiveness of the ML approach, we…

量子物理 · 物理学 2024-07-22 Gabriel Pereira Alves , Nicolas Gigena , Jędrzej Kaniewski

Generalizability of machine-learning (ML) based turbulence closures to accurately predict unseen practical flows remains an important challenge. At the Reynolds-averaged Navier-Stokes (RANS) level, NN-based turbulence closure modeling is…

流体动力学 · 物理学 2021-12-15 Salar Taghizadeh , Freddie Witherden , Yassin Hassan , Sharath Girimaji

There is substantial interest in the use of machine learning (ML)-based techniques throughout the electronic computer-aided design (CAD) flow, particularly methods based on deep learning. However, while deep learning methods have achieved…

机器学习 · 计算机科学 2024-03-04 Chester Holtz , Yucheng Wang , Chung-Kuan Cheng , Bill Lin

This research paper investigates how machine learning-driven data replication strategies can enhance fault tolerance in large-scale distributed systems. Traditional replication methods, which rely on static configurations, often struggle to…

分布式、并行与集群计算 · 计算机科学 2025-11-18 Almond Kiruthu Murimi

We show that the scaling laws which determine the performance of large language models (LLMs) severely limit their ability to improve the uncertainty of their predictions. As a result, raising their reliability to meet the standards of…

人工智能 · 计算机科学 2025-07-31 Peter V. Coveney , Sauro Succi

The presented study aims to provide an efficient and reliable tool for rapid estimation of the shear capacity of a TRM-strengthened masonry wall. For this purpose, a data-driven methodology based on a machine learning system is proposed…

信号处理 · 电气工程与系统科学 2024-10-08 Petros Lazaridis , Athanasia Thomoglou

Machine-learning-based anomaly detection (ML-based AD) has been successful at detecting DDoS events in the lab. However published evaluations of ML-based AD have used only limited data and provided minimal insight into why it works. To…

网络与互联网体系结构 · 计算机科学 2020-06-23 Hang Guo , Xun Fan , Anh Cao , Geoff Outhred , John Heidemann

The use of Machine Learning (ML) techniques in Intrusion Detection Systems (IDS) has taken a prominent role in the network security management field, due to the substantial number of sophisticated attacks that often pass undetected through…

网络与互联网体系结构 · 计算机科学 2020-09-22 Mario Di Mauro , Giovanni Galatro , Antonio Liotta

Machine learning (ML) models are increasingly being used in metrology applications. However, for ML models to be credible in a metrology context they should be accompanied by principled uncertainty quantification. This paper addresses the…

机器学习 · 计算机科学 2024-05-09 Andrew Thompson

We apply reinforcement learning (RL) to robotics tasks. One of the drawbacks of traditional RL algorithms has been their poor sample efficiency. One approach to improve the sample efficiency is model-based RL. In our model-based RL…

机器学习 · 计算机科学 2023-05-16 Adithya Ramesh , Balaraman Ravindran

This study investigates the Reynolds-number dependence of shock-induced flow through particle layers at 10\% volume fraction, using ensemble-averaged results from particle-resolved large eddy simulations. The advantage of using large eddy…

This work studies the application of a reinforcement-learning-based (RL) flow control strategy to the flow past a cylinder confined between two walls in order to suppress vortex shedding. The control action is blowing and suction of two…

流体动力学 · 物理学 2021-12-16 Jichao Li , Mengqi Zhang

This work introduces a novel data-driven framework to formulate explicit algebraic Reynolds-averaged Navier-Stokes (RANS) turbulence closures. Recent years have witnessed a blossom in applying machine learning (ML) methods to revolutionize…

流体动力学 · 物理学 2023-01-24 Hongwei Tang , Yan Wang , Tongguang Wang , Linlin Tian

Wall-pressure fluctuations are a practically robust input for real-time control systems aimed at modifying wall-bounded turbulence. The scaling behaviour of the wall-pressure--velocity coupling requires investigation to properly design a…

流体动力学 · 物理学 2024-01-11 Woutijn J. Baars , Giulio Dacome , Myoungkyu Lee

Machine unlearning for large language models (LLMs) aims to remove undesired data, knowledge, and behaviors (e.g., for safety, privacy, or copyright) while preserving useful model capabilities. Despite rapid progress over the past two…

机器学习 · 计算机科学 2025-10-10 Chongyu Fan , Changsheng Wang , Yancheng Huang , Soumyadeep Pal , Sijia Liu