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We describe a new tool developed for solar flare forecasting on the base of some sunspot group properties. Assuming that the flare frequency follows the Poisson statistics, this tool uses a database containing the morphological…

太阳与恒星天体物理 · 物理学 2019-05-16 M. Falco , P. Costa , P. Romano

Critically endangered species in Canadian North Atlantic waters are systematically surveyed to estimate species populations which influence governing policies. Due to its impact on policy, population accuracy is important. This paper lays…

计算机视觉与模式识别 · 计算机科学 2023-03-23 Joshua Power , Derek Jacoby , Marc-Antoine Drouin , Guillaume Durand , Yvonne Coady , Julian Meng

Solar flares are complicated physical phenomena that are observable in a broad range of the electromagnetic spectrum, from radiowaves to $\gamma$-rays. For a more comprehensive understanding of flares, it is necessary to perform a combined…

太阳与恒星天体物理 · 物理学 2017-08-02 Viacheslav M Sadykov , Alexander G Kosovichev , Vincent Oria , Gelu M Nita

A deep learning network, Long-Short Term Memory (LSTM) network, is used in this work to predict whether the maximum flare class an active region (AR) will produce in the next 24 hours is class $\Gamma$. We considered $\Gamma$ are $\ge M$,…

太阳与恒星天体物理 · 物理学 2020-05-27 Xiantong Wang , Yang Chen , Gabor Toth , Ward B. Manchester , Tamas I. Gombosi , Alfred O. Hero , Zhenbang Jiao , Hu Sun , Meng Jin , Yang Liu

Accurate quantitative precipitation forecasting (QPF) remains one of the main challenges in numerical weather prediction (NWP), primarily due to the difficulty of representing the full complexity of atmospheric microphysics through…

大气与海洋物理 · 物理学 2025-06-05 ChangJae Lee , Heecheol Yang , Byeonggwon Kim

The accurate prediction of the solar Diffuse Fraction (DF), sometimes called the Diffuse Ratio, is an important topic for solar energy research. In the present study, the current state of Diffuse Irradiance research is discussed and then…

机器学习 · 计算机科学 2020-12-02 Randall Claywell , Laszlo Nadai , Felde Imre , Amir Mosavi

With the increasing deployment of intelligent CCTV systems in outdoor environments, there is a growing demand for face recognition systems optimized for challenging weather conditions. Adverse weather significantly degrades image quality,…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Chang-Hwan Son , Cheol-Hwan Kim

We present a general framework for classifying partially observed dynamical systems based on the idea of learning in the model space. In contrast to the existing approaches using model point estimates to represent individual data items, we…

机器学习 · 统计学 2017-04-19 Yuan Shen , Peter Tino , Krasimira Tsaneva-Atanasova

The EU funded the FLARECAST project, that ran from Jan 2015 until Feb 2018. FLARECAST had a R2O focus, and introduced several innovations into the discipline of solar flare forecasting. FLARECAST innovations were: first, the treatment of…

One of the scientific objectives of the Ooty Wide Field Array(OWFA) is to observe the redshifted HI emission from z ~ 3.35. Although predictions spell out optimistic outcomes in reasonable integration times, these studies were based purely…

天体物理仪器与方法 · 物理学 2017-07-19 Visweshwar Ram Marthi

Zero-inflated data pose significant challenges in precipitation forecasting due to the predominance of zeros with sparse non-zero events. To address this, we propose the Zero Inflation Diffusion Framework (ZIDF), which integrates Gaussian…

机器学习 · 计算机科学 2025-09-16 Wentao Gao , Jiuyong Li , Lin Liu , Thuc Duy Le , Xiongren Chen , Xiaojing Du , Jixue Liu , Yanchang Zhao , Yun Chen

Based on structured data derived from large complex systems, we computationally further develop and refine a major factor selection protocol by accommodating structural dependency and heterogeneity among many features to unravel data's…

统计方法学 · 统计学 2022-09-07 Hsieh Fushing , Elizabeth Chou , Ting-Li Chen

Missing data are a concern in many real world data sets and imputation methods are often needed to estimate the values of missing data, but data sets with excessive missingness and high dimensionality challenge most approaches to…

机器学习 · 统计学 2021-04-22 Andrew J. Becker , James P. Bagrow

This paper discusses the development of a convolutional architecture of a deep neural network for the recognition of wildfires on satellite images. Based on the results of image classification, a fuzzy cognitive map of the analysis of the…

计算机视觉与模式识别 · 计算机科学 2022-12-08 Sergey Yarushev , Alexey Averkin

In this dataset we provide a comprehensive collection of magnetograms (images quantifying the strength of the magnetic field) from the National Aeronautics and Space Administration's (NASA's) Solar Dynamics Observatory (SDO). The dataset…

太阳与恒星天体物理 · 物理学 2024-02-13 Laura E. Boucheron , Ty Vincent , Jeremy A. Grajeda , Ellery Wuest

With the availability of multiwavelength, multiscale and multiepoch astronomical catalogues, the number of features to describe astronomical objects has increases. The better features we select to classify objects, the higher the…

天体物理学 · 物理学 2009-09-29 Y. Zhang , Y. Zhao , D. Gao

Machine learning is nowadays the methodology of choice for flare forecasting and supervised techniques, in both their traditional and deep versions, are becoming the most frequently used ones for prediction in this area of space weather.…

太阳与恒星天体物理 · 物理学 2020-11-25 Federico Benvenuto , Cristina Campi , Anna Maria Massone , Michele Piana

Decision support systems are essential for maintaining grid stability in low-carbon power systems, such as wind power plants, by providing real-time alerts to control room operators regarding potential events, including Wind Power Ramp…

This study explores the behavior of machine learning-based flare forecasting models deployed in a simulated operational environment. Using Georgia State University's Space Weather Analytics for Solar Flares benchmark dataset (Angryk et al.…

太阳与恒星天体物理 · 物理学 2024-02-09 Griffin T. Goodwin , Viacheslav M. Sadykov , Petrus C. Martens

Solar flares are among the most severe space weather phenomena, and they have the capacity to generate radiation storms and radio disruptions on Earth. The accurate prediction of solar flare events remains a significant challenge, requiring…

太阳与恒星天体物理 · 物理学 2023-10-31 Vysakh P. A. , Prateek Mayank