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Global Navigation Satellite System (GNSS) signals are subject to different kinds of events causing significant errors in positioning. This work explores the application of Machine Learning (ML) methods of anomaly detection applied to GNSS…

Signal Processing · Electrical Eng. & Systems 2019-11-07 Evgenii Munin , Antoine Blais , Nicolas Couellan

Surface defect inspection is a very challenging task in which surface defects usually show weak appearances or exist under complex backgrounds. Most high-accuracy defect detection methods require expensive computation and storage overhead,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-25 Feng Yan , Xiaoheng Jiang , Yang Lu , Lisha Cui , Shupan Li , Jiale Cao , Mingliang Xu , Dacheng Tao

Contrastive learning has gained widespread adoption for retrieval tasks due to its minimal requirement for manual annotations. However, popular training frameworks typically learn from binary (positive/negative) relevance, making them…

Information Retrieval · Computer Science 2025-04-29 Tianyu Zhu , Myong Chol Jung , Jesse Clark

The objective of this paper is to evaluate the potential of Gaofen-2 (GF-2) high resolution multispectral sensor (MS) and panchromatic (PAN) imagery on water mapping. Difficulties of water mapping on high resolution data includes: 1)…

Applications · Statistics 2016-12-26 Luyan Ji , Jie Wang , Xiurui Geng , Peng Gong

A novel hybrid Random Forest and Convolutional Neural Network (CNN) framework is presented for oil-water classification in hyperspectral images (HSI). To address the challenge of preserving spatial context, the images were divided into…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Mehdi Nickzamir , Seyed Mohammad Sheikh Ahamdi Gandab

Graph Contrastive Learning (GCL) has proven highly effective in promoting the performance of Semi-Supervised Node Classification (SSNC). However, existing GCL methods are generally transferred from other fields like CV or NLP, whose…

Machine Learning · Computer Science 2022-04-28 Deli Chen , Yankai Lin , Lei Li , Xuancheng Ren , Peng Li , Jie Zhou , Xu Sun

Waterways shape earth system processes and human societies, and a better understanding of their distribution can assist in a range of applications from earth system modeling to human development and disaster response. Most efforts to date…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Matthew Pierson , Zia Mehrabi

Soil moisture (SM) estimation from active microwave data remains challenging due to the complex interactions between radar backscatter and surface characteristics. While the water cloud model (WCM) provides a semi-physical approach for…

Machine Learning · Computer Science 2025-05-02 Yi Yu , Patrick Filippi , Thomas F. A. Bishop

We propose a novel clustering approach for point-cloud segmentation based on supervised contrastive metric learning (CML). Rather than predicting cluster assignments or object-centric variables, the method learns a latent representation in…

High Energy Physics - Experiment · Physics 2026-03-25 Max Marriott-Clarke , Lazar Novakovic , Elizabeth Ratzer , Robert J. Bainbridge , Loukas Gouskos , Benedikt Maier

Colorectal cancer (CRC) is a leading worldwide cause of cancer-related mortality, and the role of prompt precise detection is of paramount interest in improving patient outcomes. Conventional diagnostic methods such as colonoscopy and…

Image and Video Processing · Electrical Eng. & Systems 2025-10-29 Ovi Sarkar , Md Shafiuzzaman , Md. Faysal Ahamed , Golam Mahmud , Muhammad E. H. Chowdhury

We present a machine learning framework for testing general relativity (GR) with gravitational wave signals from binary black hole mergers. Using the source parameters of 173 BBH events from the GWTC catalog as a realistic astrophysical…

General Relativity and Quantum Cosmology · Physics 2026-05-13 Lavinia Heisenberg , Shayan Hemmatyar , Hector Villarrubia-Rojo

Deep convolutional neural networks provide a powerful feature learning capability for image classification. The deep image features can be utilized to deal with many image understanding tasks like image classification and object…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 Shaoning Zeng , Bob Zhang , Yanghao Zhang , Jianping Gou

The Gravity Recovery and Climate Experiment (GRACE) satellite and its successor GRACE Follow-On (GRACE-FO) provide valuable and accurate observations of terrestrial water storage anomalies (TWSAs) at a global scale. However, there is an…

Atmospheric and Oceanic Physics · Physics 2021-11-30 Shaoxing Mo , Yulong Zhong , Xiaoqing Shi , Wei Feng , Xin Yin , Jichun Wu

We develop a deep learning based convolutional-regression model that estimates the volumetric soil moisture content in the top ~5 cm of soil. Input predictors include Sentinel-1 (active radar), Sentinel-2 (optical imagery), and SMAP…

Atmospheric and Oceanic Physics · Physics 2023-10-17 Vishal Batchu , Grey Nearing , Varun Gulshan

This study was groundbreaking in its application of neural network models for nitrate management in the Recirculating Aquaculture System (RAS). A hybrid neural network model was proposed, which accurately predicted daily nitrate…

Computational Engineering, Finance, and Science · Computer Science 2024-01-17 Xiangyu Fan , Jiaxin Lia , Yingzhe Wang , Yingsha Qu , Hao Li , Keming Qu , Zhengguo Cui

Future large-scale surveys with high resolution imaging will provide us with a few $10^5$ new strong galaxy-scale lenses. These strong lensing systems however will be contained in large data amounts which are beyond the capacity of human…

Instrumentation and Methods for Astrophysics · Physics 2018-03-14 C. Schaefer , M. Geiger , T. Kuntzer , J-P. Kneib

Ensuring that large language models (LLMs) remain both helpful and harmless poses a significant challenge: fine-tuning on repetitive safety datasets, where unsafe prompts are paired with standard refusal templates, often leads to false…

Machine Learning · Computer Science 2026-03-17 Quan Liu , Han Zhou , Wenquan Wu , Hua Wu , Sen Su

Effective spatio-temporal measurements of water surface elevation (water waves) in laboratory experiments are crucial for scientific and engineering research. Existing techniques are often cumbersome, computationally heavy and generally…

Atmospheric and Oceanic Physics · Physics 2024-10-22 Noam Ginio , Michael Lindenbaum , Barak Fishbain , Dan Liberzon

Deep learning approaches have been widely used in Automatic Speech Recognition (ASR) and they have achieved a significant accuracy improvement. Especially, Convolutional Neural Networks (CNNs) have been revisited in ASR recently. However,…

Computation and Language · Computer Science 2017-02-28 Yisen Wang , Xuejiao Deng , Songbai Pu , Zhiheng Huang

This paper introduces warped Gaussian processes (WGP) regression in remote sensing applications. WGP models output observations as a parametric nonlinear transformation of a GP. The parameters of such prior model are then learned via…

Computer Vision and Pattern Recognition · Computer Science 2020-12-23 Anna Mateo-Sanchis , Jordi Muñoz-Marí , Adrián Pérez-Suay , Gustau Camps-Valls
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