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Jim Zhao

3 accepted papers

2026

Optimizer Choice Matters For The Emergence of Neural Collapse

ICLR 2026poster

Neural Collapse (NC) refers to the emergence of highly symmetric geometric structures in the representations of deep neural networks during the terminal phase of training. Despite its prevalence, the theoretical understanding of NC remains limited. Existing analyses largely ignore the role of the op…

Cited by 0SourceScholar
2024

Theoretical Characterisation of the Gauss Newton Conditioning in Neural Networks

NeurIPS 2024poster

The Gauss-Newton (GN) matrix plays an important role in machine learning, most evident in its use as a preconditioning matrix for a wide family of popular adaptive methods to speed up optimization. Besides, it can also provide key insights into the optimization landscape of neural networks. In the…

Cited by 0SourcePDFScholar