Harmonic Loss Trains Interpretable AI Models

Fuente: arXiv
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Auteurs principaux: Baek, David D., Liu, Ziming, Tyagi, Riya, Tegmark, Max
Format: Preprint
Publié: 2025
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author Baek, David D.
Liu, Ziming
Tyagi, Riya
Tegmark, Max
author_facet Baek, David D.
Liu, Ziming
Tyagi, Riya
Tegmark, Max
contents In this paper, we introduce harmonic loss as an alternative supervisory signal for training neural networks and large language models (LLMs). Harmonic loss differs from standard cross-entropy loss by (a) replacing the usual SoftMax normalization with a scale-invariant HarMax function and (b) computing logits via Euclidean distance rather than a dot product. Harmonic loss enables improved interpretability and faster convergence, owing to its scale invariance and finite convergence point by design, which can be interpreted as a class center. We first validate the performance of harmonic models across algorithmic, vision, and language datasets. Through extensive experiments, we demonstrate that models trained with harmonic loss perform better than standard models by: (a) enhancing interpretability, (b) requiring less data for generalization, and (c) reducing grokking. Moreover, we compare a GPT-2 model trained with harmonic loss to the standard GPT-2, illustrating that the harmonic model develops more interpretable representations. Looking forward, we believe harmonic loss may become a valuable tool in domains with limited data availability or in high-stakes applications where interpretability and reliability are paramount, paving the way for more robust and efficient neural network models.
format Preprint
id arxiv_https___arxiv_org_abs_2502_01628
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Harmonic Loss Trains Interpretable AI Models
Baek, David D.
Liu, Ziming
Tyagi, Riya
Tegmark, Max
Machine Learning
In this paper, we introduce harmonic loss as an alternative supervisory signal for training neural networks and large language models (LLMs). Harmonic loss differs from standard cross-entropy loss by (a) replacing the usual SoftMax normalization with a scale-invariant HarMax function and (b) computing logits via Euclidean distance rather than a dot product. Harmonic loss enables improved interpretability and faster convergence, owing to its scale invariance and finite convergence point by design, which can be interpreted as a class center. We first validate the performance of harmonic models across algorithmic, vision, and language datasets. Through extensive experiments, we demonstrate that models trained with harmonic loss perform better than standard models by: (a) enhancing interpretability, (b) requiring less data for generalization, and (c) reducing grokking. Moreover, we compare a GPT-2 model trained with harmonic loss to the standard GPT-2, illustrating that the harmonic model develops more interpretable representations. Looking forward, we believe harmonic loss may become a valuable tool in domains with limited data availability or in high-stakes applications where interpretability and reliability are paramount, paving the way for more robust and efficient neural network models.
title Harmonic Loss Trains Interpretable AI Models
topic Machine Learning
url https://arxiv.org/abs/2502.01628