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Requential Coding: Pushing the Limits of Model Compression with Self-Generated Training Data

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Compression is fundamental to intelligence. A model that can represent its training data as a short code has discovered regularities that enable generalization.

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arXiv Machine Learning
Sep 21

On the Limits of Maximal Coding Rate Reduction for Out-of-Distribution Generalisation

The paper investigates the limits of the maximal coding rate reduction (MCR²) framework for out‑of‑distribution (OOD) generalisation. It shows that MCR² can lead to complete prediction failure under distribution shift, even when a perfectly stable feature is available, and that adding invariance principles from IRM or REx does not resolve this issue. The authors conclude that additional assumptions or learning principles are needed to guarantee stable OOD predictions with MCR².

By Menghui Zhou, Gaoshan Bi, Vitaveska Lanfranchi, Po Yang