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Shallow2Deep: Restraining Neural Networks Opacity Through Neural Architecture Search

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Explainable and Transparent AI and Multi-Agent Systems (EXTRAAMAS 2021)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 12688))

Abstract

Recently, the Deep Learning (DL) research community has focused on developing efficient and highly performing Neural Networks (NN). Meanwhile, the eXplainable AI (XAI) research community has focused on making Machine Learning (ML) and Deep Learning methods interpretable and transparent, seeking explainability. This work is a preliminary study on the applicability of Neural Architecture Search (NAS) (a sub-field of DL looking for automatic design of NN structures) in XAI. We propose Shallow2Deep, an evolutionary NAS algorithm that exploits local variability to restrain opacity of DL-systems through NN architectures simplification. Shallow2Deep effectively reduces NN complexity – therefore their opacity – while reaching state-of-the-art performances. Unlike its competitors, Shallow2Deep promotes variability of localised structures in NN, helping to reduce NN opacity. The proposed work analyses the role of local variability in NN architectures design, presenting experimental results that show how this feature is actually desirable.

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Notes

  1. 1.

    https://eur-lex.europa.eu/eli/reg/2016/679/oj.

  2. 2.

    By “shallow” (resp. “deep”) layers of a NN we mean the inner layers close to the input (resp. output) neurons.

  3. 3.

    https://github.com/AndAgio/Shallow2Deep.

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Acknowledgements

This paper has been partially supported by (i) the H2020 project “StairwAI” (G.A. 101017142), and (ii) the CHIST-ERA IV project “EXPECTATION” (G.A. CHIST-ERA-19-XAI-005).

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  1. Alma Mater Studiorum—University of Bologna, Cesena, Italy

    Andrea Agiollo, Giovanni Ciatto & Andrea Omicini

  2. The Research Hub by Electrolux Professional S.p.A., 33170, Pordenone, PN, Italy

    Andrea Agiollo

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Correspondence to Andrea Agiollo .

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  1. University of Applied Sciences and Arts Western Switzerland, Sierre, Switzerland

    Davide Calvaresi

  2. University of Luxembourg, Esch-sur-Alzette, Luxembourg

    Amro Najjar

  3. Victoria University of Wellington, Wellington, New Zealand

    Michael Winikoff

  4. Umeå University, Umeå, Sweden

    Kary Främling

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Agiollo, A., Ciatto, G., Omicini, A. (2021). Shallow2Deep: Restraining Neural Networks Opacity Through Neural Architecture Search. In: Calvaresi, D., Najjar, A., Winikoff, M., Främling, K. (eds) Explainable and Transparent AI and Multi-Agent Systems. EXTRAAMAS 2021. Lecture Notes in Computer Science(), vol 12688. Springer, Cham. https://doi.org/10.1007/978-3-030-82017-6_5

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