Understanding the learning mechanism of convolutional neural networks applied to fluorescence spectra

Venturini, Francesca; Michelucci, Umberto; Sperti, Michela; Gucciardi, Arnaud; Deriu, Marco A.

Publication type:	Conference other
Type of review:	Peer review (abstract)
Title:	Understanding the learning mechanism of convolutional neural networks applied to fluorescence spectra
Authors:	Venturini, Francesca Michelucci, Umberto Sperti, Michela Gucciardi, Arnaud Deriu, Marco A.
et. al:	No
Conference details:	SPIE Photonics West, San Francisco, USA, 28 January - 2 February 2023
Issue Date:	1-Feb-2023
Language:	English
Subjects:	Fluorescence; Artificial intelligence; Machine learning; Convolutional neural network
Subject (DDC):	006: Special computer methods 530: Physics
Abstract:	The power of artificial neural networks to determine the quality and properties of olive oil was proven by several studies in the last years. Less clear is, however, how the neural network is able to extract useful information from the input data. This work investigates the learning mechanism of one-dimensional convolutional neural networks (1D-CNNs) trained to predict the physicochemical properties of olive oil from single fluorescence spectra. Such a 1D-CNN can successfully predict the parameters relevant to the quality assessment: acidity, peroxide value, and UV absorbance. To go beyond a simple quality assessment algorithm, it is important to identify which spectral features in the measured spectra are correlated with each chemical parameter and therefore with the quality of olive oil. To obtain this information, explainability techniques can be used by studying the latent feature space generated by the intermediate layers of the one-dimensional trained convolutional neural network. This work analyses in detail the common features that are used by the 1D-CNN to predict the two physicochemical parameters: acidity and K232.
Further description:	AI and Optical Data Sciences IV; Paper 12438-50
URI:	https://digitalcollection.zhaw.ch/handle/11475/27038
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Applied Mathematics and Physics (IAMP)
Appears in collections:	Publikationen School of Engineering

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Venturini, F., Michelucci, U., Sperti, M., Gucciardi, A., & Deriu, M. A. (2023, February 1). Understanding the learning mechanism of convolutional neural networks applied to fluorescence spectra. SPIE Photonics West, San Francisco, USA, 28 January - 2 February 2023.

Venturini, F. et al. (2023) ‘Understanding the learning mechanism of convolutional neural networks applied to fluorescence spectra’, in SPIE Photonics West, San Francisco, USA, 28 January - 2 February 2023.

F. Venturini, U. Michelucci, M. Sperti, A. Gucciardi, and M. A. Deriu, “Understanding the learning mechanism of convolutional neural networks applied to fluorescence spectra,” in SPIE Photonics West, San Francisco, USA, 28 January - 2 February 2023, Feb. 2023.

VENTURINI, Francesca, Umberto MICHELUCCI, Michela SPERTI, Arnaud GUCCIARDI und Marco A. DERIU, 2023. Understanding the learning mechanism of convolutional neural networks applied to fluorescence spectra. In: SPIE Photonics West, San Francisco, USA, 28 January - 2 February 2023. Conference presentation. 1 Februar 2023

Venturini, Francesca, Umberto Michelucci, Michela Sperti, Arnaud Gucciardi, and Marco A. Deriu. 2023. “Understanding the Learning Mechanism of Convolutional Neural Networks Applied to Fluorescence Spectra.” Conference presentation. In SPIE Photonics West, San Francisco, USA, 28 January - 2 February 2023.

Venturini, Francesca, et al. “Understanding the Learning Mechanism of Convolutional Neural Networks Applied to Fluorescence Spectra.” SPIE Photonics West, San Francisco, USA, 28 January - 2 February 2023, 2023.