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. 2020 Jul 8;10:11212. doi: 10.1038/s41598-020-68156-2

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the articleâ€™s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the articleâ€™s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Supervised PLS dimensionality reduction overview: (a) mean square error vs. number of components (minimum MSE @ 41 components) across tenfold cross-validation, (b) sample spectra for each class type, (c) weights from PLS for each coefficient, i.e. wavelength.