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Conference Paper

An Analysis of the Anti-Learning Phenomenon for the Class Symmetric Polyhedron


Chapelle,  O
Department Empirical Inference, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Kowalczyk, A., & Chapelle, O. (2005). An Analysis of the Anti-Learning Phenomenon for the Class Symmetric Polyhedron. In Algorithmic Learning Theory (pp. 78-92).

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This paper deals with an unusual phenomenon where most machine learning algorithms yield good performance on the training set but systematically worse than random performance on the test set. This has been observed so far for some natural data sets and demonstrated for some synthetic data sets when the classification rule is learned from a small set of training samples drawn from some high dimensional space. The initial analysis presented in this paper shows that anti-learning is a property of data sets and is quite distinct from overfitting of a training data. Moreover, the analysis leads to a specification of some machine learning procedures which can overcome anti-learning and generate ma- chines able to classify training and test data consistently.