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Neural collapse with unconstrained features

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arxiv 2011.11619 v1 pith:GUJPU7CT submitted 2020-11-23 cs.LG

classification cs.LG
keywords collapseneuralfeaturesmodelunconstraineddeepdiscovereddonoho
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Neural collapse is an emergent phenomenon in deep learning that was recently discovered by Papyan, Han and Donoho. We propose a simple "unconstrained features model" in which neural collapse also emerges empirically. By studying this model, we provide some explanation for the emergence of neural collapse in terms of the landscape of empirical risk.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Imitate Optimal Policy: Prevail and Induce Action Collapse in Policy Gradient

    cs.LG 2025-09 reject novelty 6.0 of 10

    Action Collapse Policy Gradient (ACPG) fixes the action-selection layer to a simplex ETF and claims improved discrete-action RL performance, with a theory that only covers a weighted optimal-action imitation objective.

  2. The Exploration of Neural Collapse under Imbalanced Data

    cs.LG 2024-11 reject novelty 5.0 of 10

    For the L-layer unconstrained feature model with bias and squared-error loss, the global minimizer's geometric structure is governed by the singular values of the matrix (I - n1^T/N)diag(√n).

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