Deep Learning, Ian Goodfellow, Yoshua Bengio, and Aaron Courville, 2016 (MIT Press) - This is a standard textbook for the field of deep learning, providing a detailed theoretical background on feedforward neural networks, activation functions, and fundamental architectures.
Flux.jl: High-Performance Machine Learning, The Flux.jl Community, 2025 - The official documentation for Flux.jl, providing direct information and examples for using Dense layers, Chain models, and various activation functions in Julia.
Neural Networks and Deep Learning, Michael A. Nielsen, 2015 (Determination Press) - An online book offering clear and accessible explanations of neural network fundamentals, including multi-layer perceptrons, their structure, and the role of activation functions.