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• W3135512773 abstract "Traditional statistics forbids use of test data (a.k.a. holdout data) during training. Dwork et al. 2015 pointed out that current practices in machine learning, whereby researchers build upon each other's models, copying hyperparameters and even computer code -- amounts to implicitly training on the test set. Thus error rate on test data may not reflect the true population error. This observation initiated {em adaptive data analysis}, which provides evaluation mechanisms with guaranteed upper bounds on this difference. With statistical query (i.e. test accuracy) feedbacks, the best upper bound is fairly pessimistic: the deviation can hit a practically vacuous value if the number of models tested is quadratic in the size of the test set. In this work, we present a simple new estimate, {em Rip van Winkle's Razor}. It relies upon a new notion of textquotedblleft information contenttextquotedblright of a model: the amount of information that would have to be provided to an expert referee who is intimately familiar with the field and relevant science/math, and who has been just been woken up after falling asleep at the moment of the creation of the test data (like textquotedblleft Rip van Winkletextquotedblright of the famous fairy tale). This notion of information content is used to provide an estimate of the above deviation which is shown to be non-vacuous in many modern settings." @default.
• W3135512773 created "2021-03-15" @default.
• W3135512773 creator A5012440924 @default.
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• W3135512773 date "2021-02-25" @default.
• W3135512773 modified "2023-09-27" @default.
• W3135512773 title "Rip van Winkle's Razor: A Simple Estimate of Overfit to Test Data" @default.
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