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Despite the significant breakthrough of neural networks in the last few years, their spreading in the field of computational fluid dynamics is very recent, and many applications remain to explore. In this paper, we explore the drag…

计算物理 · 物理学 2020-07-06 Jonathan Viquerat , Elie Hachem

Fine-grained visual classification (FGVC) aims to classify sub-classes of objects in the same super-class (e.g., species of birds, models of cars). For the FGVC tasks, the essential solution is to find discriminative subtle information of…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Chenyu Guo , Jiyang Xie , Kongming Liang , Xian Sun , Zhanyu Ma

The surface pressure field of transportation systems, including cars, trains, and aircraft, is critical for aerodynamic analysis and design. In recent years, deep neural networks have emerged as promising and efficient methods for modeling…

计算工程、金融与科学 · 计算机科学 2026-01-13 Junhong Zou , Wei Qiu , Zhenxu Sun , Xiaomei Zhang , Zhaoxiang Zhang , Xiangyu Zhu

Data-driven methods demonstrate considerable potential for accelerating the inherently expensive computational fluid dynamics (CFD) solvers. Nevertheless, pure machine-learning surrogate models face challenges in ensuring physical…

流体动力学 · 物理学 2024-09-12 Clément Caron , Philippe Lauret , Alain Bastide

This paper investigates the prediction of vessels' arrival time to the pilotage area using multi-data fusion and deep learning approaches. Firstly, the vessel arrival contour is extracted based on Multivariate Kernel Density Estimation…

机器学习 · 计算机科学 2024-03-18 Xiaocai Zhang , Xiuju Fu , Zhe Xiao , Haiyan Xu , Xiaoyang Wei , Jimmy Koh , Daichi Ogawa , Zheng Qin

Precipitation nowcasting (up to a few hours) remains a challenge due to the highly complex local interactions that need to be captured accurately. Convolutional Neural Networks rely on convolutional kernels convolving with grid data and the…

机器学习 · 计算机科学 2023-09-13 Shan Zhao , Sudipan Saha , Zhitong Xiong , Niklas Boers , Xiao Xiang Zhu

The imminent rise of autonomous vehicles (AVs) is revolutionizing the future of transport. The Vehicular Fog Computing (VFC) paradigm has emerged to alleviate the load of compute-intensive and delay-sensitive AV programs via task offloading…

网络与互联网体系结构 · 计算机科学 2024-10-10 Mohammad Parsa Toopchinezhad , Mahmood Ahmadi

Program similarity is a fundamental concept, central to the solution of software engineering tasks such as software plagiarism, clone identification, code refactoring and code search. Accurate similarity estimation between programs requires…

机器学习 · 计算机科学 2020-07-31 Aravind Nair , Avijit Roy , Karl Meinke

Heterogeneous data are commonly adopted as the inputs for some models that predict the future trends of some observations. Existing predictive models typically ignore the inconsistencies and imperfections in heterogeneous data while also…

机器学习 · 计算机科学 2022-05-10 Zhengjing Ma , Gang Mei , Salvatore Cuomo , Francesco Piccialli

We introduce compositional tensor trains (CTTs) for the approximation of multivariate functions, a class of models obtained by composing low-rank functions in the tensor-train format. This format can encode standard approximation tools,…

数值分析 · 数学 2025-12-23 Martin Eigel , Charles Miranda , Anthony Nouy , David Sommer

Graph refinement, or the task of obtaining subgraphs of interest from over-complete graphs, can have many varied applications. In this work, we extract trees or collection of sub-trees from image data by, first deriving a graph-based…

计算机视觉与模式识别 · 计算机科学 2020-06-03 Raghavendra Selvan , Thomas Kipf , Max Welling , Antonio Garcia-Uceda Juarez , Jesper H Pedersen , Jens Petersen , Marleen de Bruijne

Carbon fiber and graphene-based nanostructures such as carbon nanotubes (CNTs) and defective structures have extraordinary potential as strong and lightweight materials. A longstanding bottleneck has been lack of understanding and…

材料科学 · 物理学 2021-10-26 Qi Zhao , Jordan J. Winetrout , Yanxun Xu , Yusu Wang , Hendrik Heinz

Financial markets are difficult to predict due to its complex systems dynamics. Although there have been some recent studies that use machine learning techniques for financial markets prediction, they do not offer satisfactory performance…

统计金融 · 定量金融 2022-01-31 Jia Wang , Tong Sun , Benyuan Liu , Yu Cao , Degang Wang

Global navigation satellite system (GNSS) positioning is widely used for urban navigation, but the covariance reported by the GNSS solver is often unreliable in urban canyons. Existing differentiable factor graph optimization (DFGO) methods…

信号处理 · 电气工程与系统科学 2026-05-08 Liang Qian , Penggao Yan , Penghui Xu , Li-Ta Hsu

In recent years, visual tracking methods that are based on discriminative correlation filters (DCF) have been very promising. However, most of these methods suffer from a lack of robust scale estimation skills. Although a wide range of…

计算机视觉与模式识别 · 计算机科学 2020-12-14 Seyed Mojtaba Marvasti-Zadeh , Hossein Ghanei-Yakhdan , Shohreh Kasaei

With the advancement of remote-sensed imaging large volumes of very high resolution land cover images can now be obtained. Automation of object recognition in these 2D images, however, is still a key issue. High intra-class variance and low…

计算机视觉与模式识别 · 计算机科学 2019-10-15 Vikas Agaradahalli Gurumurthy

Adjoint-based optimization methods are attractive for aerodynamic shape design primarily due to their computational costs being independent of the dimensionality of the input space and their ability to generate high-fidelity gradients that…

计算物理 · 物理学 2020-08-18 S. Ashwin Renganathan , Romit Maulik and , Jai Ahuja

This paper introduces an inviscid Computational Fluid Dynamics (CFD) approach for the rapid aerodynamic assessment of Flettner rotor systems on ships. The method relies on the Eulerian flow equations, approximated utilizing a…

流体动力学 · 物理学 2025-05-09 Niklas Kühl

We present a novel machine learning approach for data assimilation applied in fluid mechanics, based on adjoint-optimization augmented by Graph Neural Networks (GNNs) models. We consider as baseline the Reynolds-Averaged Navier-Stokes…

In the field of computer vision, the numerical encoding of 3D surfaces is crucial. It is classical to represent surfaces with their Signed Distance Functions (SDFs) or Unsigned Distance Functions (UDFs). For tasks like representation…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Virgile Foy , Fabrice Gamboa , Reda Chhaibi