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https://issues.apache.org/jira/browse/SPARK-10408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14726423#comment-14726423
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Alexander Ulanov commented on SPARK-10408:
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Added implementation for (1) that is basic deep autoencoder
https://github.com/avulanov/spark/tree/autoencoder-mlp
> Autoencoder
> -----------
>
> Key: SPARK-10408
> URL: https://issues.apache.org/jira/browse/SPARK-10408
> Project: Spark
> Issue Type: Umbrella
> Components: ML
> Affects Versions: 1.5.0
> Reporter: Alexander Ulanov
> Priority: Minor
>
> Goal: Implement various types of autoencoders
> Requirements:
> 1)Basic (deep) autoencoder that supports different types of inputs: binary,
> real in [0..1]. real in [-inf, +inf]
> 2)Sparse autoencoder i.e. L1 regularization. It should be added as a feature
> to the MLP and then used here
> 3)Denoising autoencoder
> 4)Stacked autoencoder for pre-training of deep networks. It should support
> arbitrary network layers
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