Bagging Regularizes
Author(s) • • •
Poggio, Tomaso
Rifkin, Ryan
Mukherjee, Sayan
Rakhlin, Alex
Date Issued
March 1, 2002
Series/Report no.
AIM-2002-003
CBCL-214
Abstract
Intuitively, we expect that averaging --- or bagging --- different regressors with low correlation should smooth their behavior and be somewhat similar to regularization. In this note we make this intuition precise. Using an almost classical definition of stability, we prove that a certain form of averaging provides generalization bounds with a rate of convergence of the same order as Tikhonov regularization --- similar to fashionable RKHS-based learning algorithms.
Subjects
AI
Bagging
stability
regularization
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