Search Results for author: Sabrina Guastavino

Found 10 papers, 1 papers with code

Greedy feature selection: Classifier-dependent feature selection via greedy methods

no code implementations8 Mar 2024 Fabiana Camattari, Sabrina Guastavino, Francesco Marchetti, Michele Piana, Emma Perracchione

The purpose of this study is to introduce a new approach to feature ranking for classification tasks, called in what follows greedy feature selection.

feature selection

AI-FLARES: Artificial Intelligence for the Analysis of Solar Flares Data

no code implementations2 Jan 2024 Michele Piana, Federico Benvenuto, Anna Maria Massone, Cristina Campi, Sabrina Guastavino, Francesco Marchetti, Paolo Massa, Emma Perracchione, Anna Volpara

AI-FLARES (Artificial Intelligence for the Analysis of Solar Flares Data) is a research project funded by the Agenzia Spaziale Italiana and by the Istituto Nazionale di Astrofisica within the framework of the ``Attivit\`a di Studio per la Comunit\`a Scientifica Nazionale Sole, Sistema Solare ed Esopianeti'' program.

A comprehensive theoretical framework for the optimization of neural networks classification performance with respect to weighted metrics

no code implementations22 May 2023 Francesco Marchetti, Sabrina Guastavino, Cristina Campi, Federico Benvenuto, Michele Piana

In many contexts, customized and weighted classification scores are designed in order to evaluate the goodness of the predictions carried out by neural networks.

Operational solar flare forecasting via video-based deep learning

no code implementations12 Sep 2022 Sabrina Guastavino, Francesco Marchetti, Federico Benvenuto, Cristina Campi, Michele Piana

Operational flare forecasting aims at providing predictions that can be used to make decisions, typically at a daily scale, about the space weather impacts of flare occurrence.

Prediction of severe thunderstorm events with ensemble deep learning and radar data

no code implementations20 Sep 2021 Sabrina Guastavino, Michele Piana, Marco Tizzi, Federico Cassola, Antonio Iengo, Davide Sacchetti, Enrico Solazzo, Federico Benvenuto

The problem of nowcasting extreme weather events can be addressed by applying either numerical methods for the solution of dynamic model equations or data-driven artificial intelligence algorithms.

Binary Classification

Score-oriented loss (SOL) functions

1 code implementation29 Mar 2021 Francesco Marchetti, Sabrina Guastavino, Michele Piana, Cristina Campi

Loss functions engineering and the assessment of forecasting performances are two crucial and intertwined aspects of supervised machine learning.

BIG-bench Machine Learning Binary Classification

Desaturating EUV observations of solar flaring storms

no code implementations8 Apr 2019 Sabrina Guastavino, Michele Piana, Anna Maria Massone, Richard Schwartz, Federico Benvenuto

Image saturation has been an issue for several instruments in solar astronomy, mainly at EUV wavelengths.

Astronomy

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