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Maximum Entropy Auto-Encoding
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In this paper, it is shown that an auto-encoder using optimal reconstruction significantly outperforms a conventional auto-encoder. Optimal reconstruction uses the conditional mean of the input given the features, under a maximum entropy prior distribution. The optimal reconstruction network, which is called deterministic projected belied network (D-PBN), resembles a standard reconstruction network, but with special non-linearities that mist be iteratively solved. The method, which can be seen as a generalization of maximum entropy image reconstruction, extends to multiple layers. In experiments, mean square reconstruction error reduced by up to a factor of two. The performance improvement diminishes for deeper networks, or for input data with unconstrained values (Gaussian assumption).
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The model is the message: Lightweight convolutional autoencoders applied to noisy imaging data for planetary science and astrobiology
A simple convolutional autoencoder reconstructs planetary images with up to 99% pixel loss, and the author argues its latent space could be a more efficient data product than raw imagery.
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