GitHub user zero323 opened a pull request:
https://github.com/apache/spark/pull/16822
[SPARK-19475][PYTHON][ML][MLLIB] Support (ml|mllib).linalg.Vector negation
## What changes were proposed in this pull request?
- Modify `DenseVector._delegate` to support unary operators, including
`__neg__`.
- Implement `SparseVector.__neg__`.
- Cover negation in unit tests.
## How was this patch tested?
Unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zero323/spark SPARK-19475
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16822.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 #16822
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commit 1ebb0a7eed9e9da9ecd97a32f8b73e8f3098aad8
Author: zero323 <[email protected]>
Date: 2017-02-06T14:01:49Z
Support (ml|mllib).linalg.Vector negation
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