A topological model for partial equivariance in deep learning and data analysis

In this article, we propose a topological model to encode partial equivariance in neural networks. To this end, we introduce a class of operators, called P-GENEOs, that change data expressed by measurements, respecting the action of certain sets of transformations, in a non-expansive way. If the set...

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Bibliographic Details
Published in:Frontiers in Artificial Intelligence
Main Authors: Lucia Ferrari, Patrizio Frosini, Nicola Quercioli, Francesca Tombari
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-12-01
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Online Access:https://www.frontiersin.org/articles/10.3389/frai.2023.1272619/full
Description
Summary:In this article, we propose a topological model to encode partial equivariance in neural networks. To this end, we introduce a class of operators, called P-GENEOs, that change data expressed by measurements, respecting the action of certain sets of transformations, in a non-expansive way. If the set of transformations acting is a group, we obtain the so-called GENEOs. We then study the spaces of measurements, whose domains are subjected to the action of certain self-maps and the space of P-GENEOs between these spaces. We define pseudo-metrics on them and show some properties of the resulting spaces. In particular, we show how such spaces have convenient approximation and convexity properties.
ISSN:2624-8212