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Rapid Prediction of Electron-Ionization Mass Spectrometry using Neural Networks
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Rapid Prediction of Electron-Ionization Mass Spectrometry using Neural Networks
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Rapid Prediction of Electron-Ionization Mass Spectrometry using Neural Networks
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Paper
Rapid Prediction of Electron-Ionization Mass Spectrometry using Neural Networks
2019
Overview
When confronted with a substance of unknown identity, researchers often perform mass spectrometry on the sample and compare the observed spectrum to a library of previously-collected spectra to identify the molecule. While popular, this approach will fail to identify molecules that are not in the existing library. In response, we propose to improve the library's coverage by augmenting it with synthetic spectra that are predicted using machine learning. We contribute a lightweight neural network model that quickly predicts mass spectra for small molecules. Achieving high accuracy predictions requires a novel neural network architecture that is designed to capture typical fragmentation patterns from electron ionization. We analyze the effects of our modeling innovations on library matching performance and compare our models to prior machine learning-based work on spectrum prediction.
Publisher
Cornell University Library, arXiv.org
