Compact Matrix Quantum Group Equivariant Neural Networks

• URL: http://arxiv.org/abs/2311.06358v2
• Date: Fri, 23 May 2025 14:30:04 GMT
• Title: Compact Matrix Quantum Group Equivariant Neural Networks
• Authors: Edward Pearce-Crump,
• Abstract summary: Group equivariant neural networks have proven effective in modelling a wide range of tasks where the data lives in a classical geometric space.<n>These networks are not suitable for learning from data that lives in a non-commutative geometry.<n>We derive the existence of a new type of equivariant neural network, called compact matrix quantum group equivariant neural networks.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Group equivariant neural networks have proven effective in modelling a wide range of tasks where the data lives in a classical geometric space and exhibits well-defined group symmetries. However, these networks are not suitable for learning from data that lives in a non-commutative geometry, described formally by non-commutative $C^{*}$-algebras, since the $C^{*}$-algebra of continuous functions on a compact matrix group is commutative. To address this limitation, we derive the existence of a new type of equivariant neural network, called compact matrix quantum group equivariant neural networks, which encode symmetries that are described by compact matrix quantum groups. We characterise the weight matrices that appear in these neural networks for the easy compact matrix quantum groups, which are defined by set partitions. As a result, we obtain new characterisations of equivariant weight matrices for some compact matrix groups that have not appeared previously in the machine learning literature.

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