Search Results for author: Berkay Aydin

Found 11 papers, 5 papers with code

Active Region-based Flare Forecasting with Sliding Window Multivariate Time Series Forest Classifiers

no code implementations5 Feb 2024 Anli Ji, Berkay Aydin

Our findings demonstrate that our sliding-window time series forest classifier performs effectively in solar flare prediction (with a True Skill Statistic of over 85\%) while also pinpointing the most crucial features and sub-intervals for a given learning task.

Solar Flare Prediction Time Series

Unveiling the Potential of Deep Learning Models for Solar Flare Prediction in Near-Limb Regions

no code implementations25 Sep 2023 Chetraj Pandey, Rafal A. Angryk, Berkay Aydin

We trained three well-known deep learning architectures--AlexNet, VGG16, and ResNet34 using transfer learning and compared and evaluated the overall performance of our models using true skill statistics (TSS) and Heidke skill score (HSS) and computed recall scores to understand the prediction sensitivity in central and near-limb regions for both X- and M-class flares.

Solar Flare Prediction Transfer Learning

Towards Interpretable Solar Flare Prediction with Attention-based Deep Neural Networks

1 code implementation8 Sep 2023 Chetraj Pandey, Anli Ji, Rafal A. Angryk, Berkay Aydin

In this work, we developed an attention-based deep learning model as an improvement over the standard convolutional neural network (CNN) pipeline to perform full-disk binary flare predictions for the occurrence of $\geq$M1. 0-class flares within the next 24 hours.

Solar Flare Prediction Weather Forecasting

Exploring Deep Learning for Full-disk Solar Flare Prediction with Empirical Insights from Guided Grad-CAM Explanations

1 code implementation30 Aug 2023 Chetraj Pandey, Anli Ji, Trisha Nandakumar, Rafal A. Angryk, Berkay Aydin

This study progresses solar flare prediction research by presenting a full-disk deep-learning model to forecast $\geq$M-class solar flares and evaluating its efficacy on both central (within $\pm$70$^\circ$) and near-limb (beyond $\pm$70$^\circ$) events, showcasing qualitative assessment of post hoc explanations for the model's predictions, and providing empirical findings from human-centered quantitative assessments of these explanations.

Solar Flare Prediction

Explaining Full-disk Deep Learning Model for Solar Flare Prediction using Attribution Methods

1 code implementation29 Jul 2023 Chetraj Pandey, Rafal A. Angryk, Berkay Aydin

This paper contributes to the growing body of research on deep learning methods for solar flare prediction, primarily focusing on highly overlooked near-limb flares and utilizing the attribution methods to provide a post hoc qualitative explanation of the model's predictions.

Data Augmentation Solar Flare Prediction

Towards Coupling Full-disk and Active Region-based Flare Prediction for Operational Space Weather Forecasting

1 code implementation11 Aug 2022 Chetraj Pandey, Anli Ji, Rafal A. Angryk, Manolis K. Georgoulis, Berkay Aydin

We utilized an equal weighted average ensemble of two base learners' flare probabilities as our baseline meta learner and improved the capabilities of our two base learners by training a logistic regression model.

regression Solar Flare Prediction +2

All-Clear Flare Prediction Using Interval-based Time Series Classifiers

no code implementations3 May 2021 Anli Ji, Berkay Aydin, Manolis K. Georgoulis, Rafal Angryk

An all-clear flare prediction is a type of solar flare forecasting that puts more emphasis on predicting non-flaring instances (often relatively small flares and flare quiet regions) with high precision while still maintaining valuable predictive results.

Time Series Time Series Analysis +1

How to Train Your Flare Prediction Model: Revisiting Robust Sampling of Rare Events

no code implementations12 Mar 2021 Azim Ahmadzadeh, Berkay Aydin, Manolis K. Georgoulis, Dustin J. Kempton, Sushant S. Mahajan, Rafal A. Angryk

We present a case study of solar flare forecasting by means of metadata feature time series, by treating it as a prominent class-imbalance and temporally coherent problem.

Time Series Time Series Forecasting

Challenges with Extreme Class-Imbalance and Temporal Coherence: A Study on Solar Flare Data

no code implementations20 Nov 2019 Azim Ahmadzadeh, Maxwell Hostetter, Berkay Aydin, Manolis K. Georgoulis, Dustin J. Kempton, Sushant S. Mahajan, Rafal A. Angryk

This is in particular prevalent in interdisciplinary research where the theoretical aspects are sometimes overshadowed by the challenges of the application.

Time Series Time Series Analysis

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