In an anisotropic random-matrix model of gradient flow, the teacher signal produces a transient BBP transition where the outlier eigenvalue emerges only in an intermediate time window before overfitting.
Stability of the matrix Dyson equation and random matrices with correlations.Probability Theory and Related Fields, 173(1):293–373
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Random Matrix Theory of Early-Stopped Gradient Flow: A Transient BBP Scenario
In an anisotropic random-matrix model of gradient flow, the teacher signal produces a transient BBP transition where the outlier eigenvalue emerges only in an intermediate time window before overfitting.