Improved neural network Monte Carlo simulation

The algorithm for Monte Carlo simulation of parton-level events based on an Artificial Neural Network (ANN) proposed in arXiv:1810.11509 is used to perform a simulation of $H\to 4\ell$ decay. Improvements in the training algorithm have been implemented to avoid numerical instabilities. The integr...

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Main Author: I-Kai Chen, Matthew D. Klimek, Maxim Perelstein
Format: Article
Language:English
Published: SciPost 2021-01-01
Series:SciPost Physics
Online Access:https://scipost.org/SciPostPhys.10.1.023
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author I-Kai Chen, Matthew D. Klimek, Maxim Perelstein
author_facet I-Kai Chen, Matthew D. Klimek, Maxim Perelstein
author_sort I-Kai Chen, Matthew D. Klimek, Maxim Perelstein
collection DOAJ
description The algorithm for Monte Carlo simulation of parton-level events based on an Artificial Neural Network (ANN) proposed in arXiv:1810.11509 is used to perform a simulation of $H\to 4\ell$ decay. Improvements in the training algorithm have been implemented to avoid numerical instabilities. The integrated decay width evaluated by the ANN is within 0.7% of the true value and unweighting efficiency of 26% is reached. While the ANN is not automatically bijective between input and output spaces, which can lead to issues with simulation quality, we argue that the training procedure naturally prefers bijective maps, and demonstrate that the trained ANN is bijective to a very good approximation.
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spelling doaj.art-2582d41d84954025bb8e036f489991212022-12-21T19:47:24ZengSciPostSciPost Physics2542-46532021-01-0110102310.21468/SciPostPhys.10.1.023Improved neural network Monte Carlo simulationI-Kai Chen, Matthew D. Klimek, Maxim PerelsteinThe algorithm for Monte Carlo simulation of parton-level events based on an Artificial Neural Network (ANN) proposed in arXiv:1810.11509 is used to perform a simulation of $H\to 4\ell$ decay. Improvements in the training algorithm have been implemented to avoid numerical instabilities. The integrated decay width evaluated by the ANN is within 0.7% of the true value and unweighting efficiency of 26% is reached. While the ANN is not automatically bijective between input and output spaces, which can lead to issues with simulation quality, we argue that the training procedure naturally prefers bijective maps, and demonstrate that the trained ANN is bijective to a very good approximation.https://scipost.org/SciPostPhys.10.1.023
spellingShingle I-Kai Chen, Matthew D. Klimek, Maxim Perelstein
Improved neural network Monte Carlo simulation
SciPost Physics
title Improved neural network Monte Carlo simulation
title_full Improved neural network Monte Carlo simulation
title_fullStr Improved neural network Monte Carlo simulation
title_full_unstemmed Improved neural network Monte Carlo simulation
title_short Improved neural network Monte Carlo simulation
title_sort improved neural network monte carlo simulation
url https://scipost.org/SciPostPhys.10.1.023
work_keys_str_mv AT ikaichenmatthewdklimekmaximperelstein improvedneuralnetworkmontecarlosimulation