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Cited by 2,306

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Boosting the margin: a new explanation for the effectiveness of voting methods

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Bartlett, Peter, Freund, Yoav, Lee, Wee Sun, Schapire, Robert E.·1998·The Annals of Statistics

Abstract

One of the surprising recurring phenomena observed in experiments with boosting is that the test error of the generated classifier usually does not increase as its size becomes very large, and often is observed to decrease even after the training error reaches zero. In this paper, we show that this phenomenon is related to the distribution of margins of the training examples with respect to the generated voting classification rule, where the margin of an example is simply the difference between the number of correct votes and the maximum number of votes received by any incorrect label. We show that techniques used in the analysis of Vapnik’s support vector classifiers and of neural networks with small weights can be applied to voting methods to relate the margin distribution to the test error. We also show theoretically and experimentally that boosting is especially effective at increasing the margins of the training examples. Finally, we compare our explanation to those based on the bias-variance decomposition.

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Metadata

Authors
Bartlett, P., Freund, Y., Lee, W. S., & Schapire, R. E.
Venue
The Annals of Statistics
Published
1998-10-01
Volume
26
Issue
5
Pages
1651-1686
ISSN
0090-5364 (ISSN-L)
OpenAlex
W1975846642
Cited by
2,306
References
7
FWCI
68.70
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Boosting the margin: a new explanation for the effectiveness of voting methods. https://app.cochat.ai/papers/10.1214/aos/1024691352
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Bartlett, P., Freund, Y., Lee, W. S., & Schapire, R. E. (1998). Boosting the margin: a new explanation for the effectiveness of voting methods. The Annals of Statistics. https://doi.org/10.1214/aos/1024691352

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