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Bottom-Up and Top-Down Workflows for Hypercube- And Clustering-Based Knowledge Extractors

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Explainable and Transparent AI and Multi-Agent Systems (EXTRAAMAS 2023)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 14127))

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Abstract

Machine learning opaque models, currently exploited to carry out a wide variety of supervised and unsupervised learning tasks, are able to achieve impressive predictive performances. However, they act as black boxes (BBs) from the human standpoint, so they cannot be entirely trusted in critical applications unless there exists a method to extract symbolic and human-readable knowledge out of them.

In this paper we analyse a recurrent design adopted by symbolic knowledge extractors for BB predictors—that is, the creation of rules associated with hypercubic input space regions. We argue that this kind of partitioning may lead to suboptimum solutions when the data set at hand is sparse, high-dimensional, or does not satisfy symmetric constraints. We then propose two different knowledge-extraction workflows involving clustering approaches, highlighting the possibility to outperform existing knowledge-extraction techniques in terms of predictive performance on data sets of any kind.

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Notes

  1. 1.

    https://scikit-learn.org/stable/index.html.

  2. 2.

    https://github.com/psykei/psyke-python.

  3. 3.

    https://archive.ics.uci.edu/ml/datasets/ISTANBUL+STOCK+EXCHANGE.

  4. 4.

    https://archive.ics.uci.edu/ml/datasets/wine.

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Acknowledgments

This work has been supported by the EU ICT-48 2020 project TAILOR (No. 952215).

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Authors and Affiliations

  1. Department of Pure and Applied Sciences (DiSPeA), University of Urbino “Carlo Bo”, Urbino, Italy

    Federico Sabbatini

  2. Department of Computer Science and Engineering (DISI), University of Bologna, Bologna, Italy

    Roberta Calegari

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  1. Federico Sabbatini
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  2. Roberta Calegari
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Corresponding author

Correspondence to Federico Sabbatini .

Editor information

Editors and Affiliations

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

    Davide Calvaresi

  2. Luxembourg Institute of Science and Technology, Esch-sur-Alzette, Luxembourg

    Amro Najjar

  3. Alma Mater Studiorum, Università di Bologna, Bologna, Italy

    Andrea Omicini

  4. Ozyegin University, Istanbul, Türkiye

    Reyhan Aydogan

  5. Alma Mater Studiorum, Università di Bologna, Bologna, Italy

    Rachele Carli

  6. Alma Mater Studiorum, Università di Bologna, Bologna, Italy

    Giovanni Ciatto

  7. Université de Technologie de Belfort-Montbéliard, Belfort Cedex, France

    Yazan Mualla

  8. Umeå University, Umeå, Sweden

    Kary Främling

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Sabbatini, F., Calegari, R. (2023). Bottom-Up and Top-Down Workflows for Hypercube- And Clustering-Based Knowledge Extractors. In: Calvaresi, D., et al. Explainable and Transparent AI and Multi-Agent Systems. EXTRAAMAS 2023. Lecture Notes in Computer Science(), vol 14127. Springer, Cham. https://doi.org/10.1007/978-3-031-40878-6_7

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