Path-conditioned training: a principled way to rescale ReLU neural networks

• URL: http://arxiv.org/abs/2602.19799v1
• Date: Mon, 23 Feb 2026 12:55:48 GMT
• Title: Path-conditioned training: a principled way to rescale ReLU neural networks
• Authors: Arthur Lebeurrier, Titouan Vayer, Rémi Gribonval,
• Abstract summary: We build on the recent path-lifting framework, which provides a compact factorization of ReLU networks.<n>We introduce a geometrically motivated criterion to rescale neural network parameters.<n>We derive an efficient algorithm to perform this alignment.
• Score: 15.875889029027915
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Despite recent algorithmic advances, we still lack principled ways to leverage the well-documented rescaling symmetries in ReLU neural network parameters. While two properly rescaled weights implement the same function, the training dynamics can be dramatically different. To offer a fresh perspective on exploiting this phenomenon, we build on the recent path-lifting framework, which provides a compact factorization of ReLU networks. We introduce a geometrically motivated criterion to rescale neural network parameters which minimization leads to a conditioning strategy that aligns a kernel in the path-lifting space with a chosen reference. We derive an efficient algorithm to perform this alignment. In the context of random network initialization, we analyze how the architecture and the initialization scale jointly impact the output of the proposed method. Numerical experiments illustrate its potential to speed up training.

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