Explainable by-design Audio Segmentation through Non-Negative Matrix Factorization and Probing

Fuente: arXiv
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Autori principali: Lebourdais, Martin, Mariotte, Théo, Almudévar, Antonio, Tahon, Marie, Ortega, Alfonso
Natura: Preprint
Pubblicazione: 2024
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author Lebourdais, Martin
Mariotte, Théo
Almudévar, Antonio
Tahon, Marie
Ortega, Alfonso
author_facet Lebourdais, Martin
Mariotte, Théo
Almudévar, Antonio
Tahon, Marie
Ortega, Alfonso
contents Audio segmentation is a key task for many speech technologies, most of which are based on neural networks, usually considered as black boxes, with high-level performances. However, in many domains, among which health or forensics, there is not only a need for good performance but also for explanations about the output decision. Explanations derived directly from latent representations need to satisfy "good" properties, such as informativeness, compactness, or modularity, to be interpretable. In this article, we propose an explainable-by-design audio segmentation model based on non-negative matrix factorization (NMF) which is a good candidate for the design of interpretable representations. This paper shows that our model reaches good segmentation performances, and presents deep analyses of the latent representation extracted from the non-negative matrix. The proposed approach opens new perspectives toward the evaluation of interpretable representations according to "good" properties.
format Preprint
id arxiv_https___arxiv_org_abs_2406_13385
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Explainable by-design Audio Segmentation through Non-Negative Matrix Factorization and Probing
Lebourdais, Martin
Mariotte, Théo
Almudévar, Antonio
Tahon, Marie
Ortega, Alfonso
Audio and Speech Processing
Artificial Intelligence
Sound
Audio segmentation is a key task for many speech technologies, most of which are based on neural networks, usually considered as black boxes, with high-level performances. However, in many domains, among which health or forensics, there is not only a need for good performance but also for explanations about the output decision. Explanations derived directly from latent representations need to satisfy "good" properties, such as informativeness, compactness, or modularity, to be interpretable. In this article, we propose an explainable-by-design audio segmentation model based on non-negative matrix factorization (NMF) which is a good candidate for the design of interpretable representations. This paper shows that our model reaches good segmentation performances, and presents deep analyses of the latent representation extracted from the non-negative matrix. The proposed approach opens new perspectives toward the evaluation of interpretable representations according to "good" properties.
title Explainable by-design Audio Segmentation through Non-Negative Matrix Factorization and Probing
topic Audio and Speech Processing
Artificial Intelligence
Sound
url https://arxiv.org/abs/2406.13385