An asymptotic property of model selection criteria
Yuhong Yang; Barron, A.R.
Information Theory, IEEE Transactions on
Volume 44, Issue 1, Jan 1998 Page(s):95 - 116
Digital Object Identifier 10.1109/18.650993
Summary:Probability models are estimated by use of penalized
log-likelihood criteria related to Akaike (1973) information criterion
(AIC) and minimum description length (MDL). The accuracies of the
density estimators are shown to be related to the tradeoff between three
terms: the accuracy of approximation, the model dimension, and the
descriptive complexity of the model classes. The asymptotic risk is
determined under conditions on the penalty term, and is shown to be
minimax optimal for some cases. As an application, we show that the
optimal rate of convergence is simultaneously achieved for log-densities
in Sobolev spaces W2s(U) without knowing the
smoothness parameter s and norm parameter U in advance. Applications to
neural network models and sparse density function estimation are also
provided
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