Papers › Fast Rates for Noisy Interpolation Require Rethinking the Effects of Inductive Bias

Fast Rates for Noisy Interpolation Require Rethinking the Effects of Inductive Bias

7 Mar 2022arXiv:2203.03597archive 2025-07-28

Konstantin Donhauser, Nicolo Ruggeri, Stefan Stojanovic, Fanny Yang

Good generalization performance on high-dimensional data crucially hinges on a simple structure of the ground truth and a corresponding strong inductive bias of the estimator. Even though this intuition is valid for regularized models, in this paper we caution against a strong inductive bias for interpolation in the presence of noise: While a stronger inductive bias encourages a simpler structure that is more aligned with the ground truth, it also increases the detrimental effect of noise. Specifically, for both linear regression and classification with a sparse ground truth, we prove that minimum ℓₚ-norm and maximum ℓₚ-margin interpolators achieve fast polynomial rates close to order 1/n for p > 1 compared to a logarithmic rate for p = 1. Finally, we provide preliminary experimental evidence that this trade-off may also play a crucial role in understanding non-linear interpolating models used in practice.

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