Universal Approximation Theorem for Tessarine-Valued Neural Networks

  • Rafael A. F. Carniello UNICAMP
  • Wington L. Vital UNICAMP
  • Marcos Eduardo Valle UFRPE


The universal approximation theorem ensures that any continuous real-valued function defined on a compact subset can be approximated with arbitrary precision by a single hidden layer neural network. In this paper, we show that the universal approximation theorem also holds for tessarine-valued neural networks. Precisely, any continuous tessarine-valued function can be approximated with arbitrary precision by a single hidden layer tessarine-valued neural network with split activation functions in the hidden layer. A simple numerical example, confirming the theoretical result and revealing the superior performance of a tessarine-valued neural network over a real-valued model for interpolating a vector-valued function, is presented in the paper.


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CARNIELLO, Rafael A. F.; VITAL, Wington L.; VALLE, Marcos Eduardo. Universal Approximation Theorem for Tessarine-Valued Neural Networks. In: ENCONTRO NACIONAL DE INTELIGÊNCIA ARTIFICIAL E COMPUTACIONAL (ENIAC), 18. , 2021, Evento Online. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2021 . p. 233-243. ISSN 2763-9061. DOI: https://doi.org/10.5753/eniac.2021.18256.