Neural Velocity for hyperparameter tuning
Abstract
Hyperparameter tuning, such as learning rate decay and defining a stopping criterion, often relies on monitoring the validation loss. This paper presents NeVe, a dynamic training approach that adjusts the learning rate and defines the stop criterion based on the novel notion of "neural velocity". The neural velocity measures the rate of change of each neuron's transfer function and is an indicator of model convergence: sampling neural velocity can be performed even by forwarding noise in the network, reducing the need for a held-out dataset. Our findings show the potential of neural velocity as a key metric for optimizing neural network training efficiently
Cite
@article{arxiv.2507.05309,
title = {Neural Velocity for hyperparameter tuning},
author = {Gianluca Dalmasso and Andrea Bragagnolo and Enzo Tartaglione and Attilio Fiandrotti and Marco Grangetto},
journal= {arXiv preprint arXiv:2507.05309},
year = {2025}
}
Comments
Accepted to IJCNN 2025 (International Joint Conference on Neural Networks). 8 pages, 13 figures