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Deep generative vision models are now able to synthesize realistic-looking satellite imagery. But, the possibility of hallucinations prevents their adoption for risk-sensitive applications, such as generating materials for communicating…

This research presents a new turbulence generation method based on stochastic wavelets and tests its various properties in both homogeneous and inhomogeneous turbulence. Turbulence field can be generated with less basis compared to previous…

Numerical Analysis · Mathematics 2018-11-14 Yifan Du , Guang Lin

Building subsurface velocity models is essential to our goals in utilizing seismic data for Earth discovery and exploration, as well as monitoring. With the dawn of machine learning, these velocity models (or, more precisely, their…

Geophysics · Physics 2024-08-20 Randy Harsuko , Shijun Cheng , Tariq Alkhalifah

The recent advancement of generative foundational models has ushered in a new era of image generation in the realm of natural images, revolutionizing art design, entertainment, environment simulation, and beyond. Despite producing…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Zhiping Yu , Chenyang Liu , Liqin Liu , Zhenwei Shi , Zhengxia Zou

The accurate representation of precipitation in Earth system models (ESMs) is crucial for reliable projections of the ecological and socioeconomic impacts in response to anthropogenic global warming. The complex cross-scale interactions of…

Atmospheric and Oceanic Physics · Physics 2023-09-29 Philipp Hess , Stefan Lange , Christof Schötz , Niklas Boers

We propose a new deep learning model, WaveCastNet, to forecast high-dimensional wavefields. WaveCastNet integrates a convolutional long expressive memory architecture into a sequence-to-sequence forecasting framework, enabling it to model…

Machine Learning · Computer Science 2025-10-28 Dongwei Lyu , Rie Nakata , Pu Ren , Michael W. Mahoney , Arben Pitarka , Nori Nakata , N. Benjamin Erichson

This paper presents a comparative analysis of structural seismic responses under two types of ground motion inputs: (i) synthetic motions generated by stochastic spectral-compatible ground motion models and (ii) recorded motions from an…

Geophysics · Physics 2026-01-01 Jungho Kim , Maijia Su , Ziqi Wang , Marco Broccardo

Recently, the advent of generative AI technologies has made transformational impacts on our daily lives, yet its application in scientific applications remains in its early stages. Data scarcity is a major, well-known barrier in data-driven…

Machine Learning · Computer Science 2025-01-03 Junhuan Yang , Yuzhou Zhang , Yi Sheng , Youzuo Lin , Lei Yang

In this paper, we propose a novel cascaded diffusion-based generative framework for text-driven human motion synthesis, which exploits a strategy named GradUally Enriching SyntheSis (GUESS as its abbreviation). The strategy sets up…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Xuehao Gao , Yang Yang , Zhenyu Xie , Shaoyi Du , Zhongqian Sun , Yang Wu

The Neo-Deterministic Seismic Hazard Assessment (NDSHA) method reliably and realistically simulates the suite of earthquake ground motions that may impact civil populations as well as their heritage buildings. The modeling technique is…

Geophysics · Physics 2017-09-12 Giuliano F. Panza

We demonstrate the use of deep network to learn the distribution of data from state-of-the-art hydrodynamic simulations of the CAMELS project. To this end, we train a generative adversarial network to generate images composed of three…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-25 Sambatra Andrianomena , Sultan Hassan , Francisco Villaescusa-Navarro

Earthquake monitoring by seismic networks typically involves a workflow consisting of phase detection/picking, association, and location tasks. In recent years, the accuracy of these individual stages has been improved through the use of…

We propose a deep learning algorithm for seismic interface and pocket detection with neural networks trained by synthetic high-frequency displacement data efficiently generated by the frozen Gaussian approximation (FGA). In seismic imaging…

Geophysics · Physics 2019-11-06 James C. Hateley , Jay Roberts , Kyle Mylonakis , Xu Yang

Urban wind flow modeling and simulation play an important role in air quality assessment and sustainable city planning. A key challenge for modeling and simulation is handling the complex geometries of the urban landscape. Low order models…

Machine Learning · Computer Science 2025-12-18 Francisco Giral , Álvaro Manzano , Ignacio Gómez , Petros Koumoutsakos , Soledad Le Clainche

Deep learning-based surface electromyography (sEMG) gesture recognition is frequently bottlenecked by data scarcity and limited subject diversity. While synthetic data generation via Generative Adversarial Networks (GANs) and diffusion…

Human-Computer Interaction · Computer Science 2026-04-16 Boxuan Jiang , Chenyun Dai , Can Han

Typically, numerical simulations of Earth systems are coarse, and Earth observations are sparse and gappy. We apply four generative diffusion modeling approaches to super-resolution and inference of forced two-dimensional quasi-geostrophic…

Fluid Dynamics · Physics 2025-12-02 Anantha Narayanan Suresh Babu , Akhil Sadam , Pierre F. J. Lermusiaux

Machine Learning methods are emerging as faster and efficient alternatives to numerical simulation techniques. The field of Scientific Computing has started adopting these data-driven approaches to faithfully model physical phenomena using…

Electrocardiogram (ECG) data collection during emergency situations is challenging, making ECG data generation an efficient solution for dealing with highly imbalanced ECG training datasets. In this paper, we propose a novel approach for…

Signal Processing · Electrical Eng. & Systems 2023-06-06 Nour Neifar , Achraf Ben-Hamadou , Afef Mdhaffar , Mohamed Jmaiel , Bernd Freisleben

Deep learning image processing models have had remarkable success in recent years in generating high quality images. Particularly, the Improved Denoising Diffusion Probabilistic Models (DDPM) have shown superiority in image quality to the…

Signal Processing · Electrical Eng. & Systems 2023-05-23 Edmond Adib , Amanda Fernandez , Fatemeh Afghah , John Jeff Prevost

Machine learning (ML)-based models have demonstrated high skill and computational efficiency, often outperforming conventional physics-based models in weather and subseasonal predictions. While prior studies have assessed their fidelity in…

Atmospheric and Oceanic Physics · Physics 2026-02-13 Ziming Chen , L. Ruby Leung , Wenyu Zhou , Jian Lu , Sandro W. Lubis , Ye Liu , Chuan-Chieh Chang , Bryce E. Harrop , Ya Wang , Mingshi Yang , Gan Zhang , Yun Qian