GitHub user feynmanliang opened a pull request:
https://github.com/apache/spark/pull/6894
[SPARK-8471][ML] Discrete Cosine Transform Feature Transformer
Implementation and tests for Discrete Cosine Transformer.
TODO:
* Handle arbitrary numeric data type
* Handle 2D and 3D tensors
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/feynmanliang/spark dct-features
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6894.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #6894
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commit 95d4939900f327ecf51dabdb18a3c5852bc4999a
Author: Feynman Liang <[email protected]>
Date: 2015-06-19T02:41:50Z
Working DCT for 1D Doubles
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