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Composition of Activation Functions and the Reduction to Finite Domain

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  • George A. Anastassiou

    (Department of Mathematical Sciences, University of Memphis, Memphis, TN 38152, USA)

Abstract

This work takes up the task of the determination of the rate of pointwise and uniform convergences to the unit operator of the “normalized cusp neural network operators”. The cusp is a compact support activation function, which is the composition of two general activation functions having as domain the whole real line. These convergences are given via the modulus of continuity of the engaged function or its derivative in the form of Jackson type inequalities. The composition of activation functions aims to more flexible and powerful neural networks, introducing for the first time the reduction in infinite domains to the one domain of compact support.

Suggested Citation

  • George A. Anastassiou, 2025. "Composition of Activation Functions and the Reduction to Finite Domain," Mathematics, MDPI, vol. 13(19), pages 1-10, October.
    • Handle: RePEc:gam:jmathe:v:13:y:2025:i:19:p:3177-:d:1764543
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