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Research map / Optimization / Implicit bias and generalization

Spurious Valleys and Clustering Behavior of Neural Networks

ICML 2023 · Optimization › Implicit bias and generalization · approach: Neural tangent kernel analysis

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Hidden layer sizes set to at least the k-intrinsic dimension (h_k >= dim_k) for no-bias networkspolynomial NN without bias (theory) · theoretical sufficient condition (Theorem 3.7)existence of spurious valleys in loss landscapeNo clear effect
Hidden layer sizes set to at least intrinsic dimension minus one (h_k >= dim_k - 1) for networks with biaspolynomial NN with bias (theory) · theoretical sufficient condition (Theorem 3.10)existence of spurious valleys in loss landscapeNo clear effect
Translating training inputs toward infinity (delta to +inf) for a representable target in a 1-3-1 square-activation networkcluster behavior of cut loss landscape error values · target 3x^2-13, 1-3-1 2-NN (Example 4.1)middle cluster error values limitMixed

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