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.
High-temperature expansions and message passing algorithms.Journal of Statistical Mechanics: Theory and Experiment, 2019(11):113301
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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.