Papers › PReLU: Yet Another Single-Layer Solution to the XOR Problem

PReLU: Yet Another Single-Layer Solution to the XOR Problem

17 Sep 2024arXiv:2409.10821archive 2025-07-28

Rafael C. Pinto, Anderson R. Tavares

This paper demonstrates that a single-layer neural network using Parametric Rectified Linear Unit (PReLU) activation can solve the XOR problem, a simple fact that has been overlooked so far. We compare this solution to the multi-layer perceptron (MLP) and the Growing Cosine Unit (GCU) activation function and explain why PReLU enables this capability. Our results show that the single-layer PReLU network can achieve 100\% success rate in a wider range of learning rates while using only three learnable parameters.

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