Towards a new generation of parton densities with deep learning models

We present a new regression model for the determination of parton distribution functions (PDF) using techniques inspired from deep learning projects. In the context of the NNPDF methodology, we implement a new efficient computing framework based on graph generated models for PDF parametrization and...

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Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 2019-08, Vol.79 (8), p.1-9, Article 676
Hauptverfasser: Carrazza, Stefano, Cruz-Martinez, Juan
Format: Artikel
Sprache:eng
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Zusammenfassung:We present a new regression model for the determination of parton distribution functions (PDF) using techniques inspired from deep learning projects. In the context of the NNPDF methodology, we implement a new efficient computing framework based on graph generated models for PDF parametrization and gradient descent optimization. The best model configuration is derived from a robust cross-validation mechanism through a hyperparametrization tune procedure. We show that results provided by this new framework outperforms the current state-of-the-art PDF fitting methodology in terms of best model selection and computational resources usage.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-019-7197-2