Github user zero323 closed the pull request at:
https://github.com/apache/spark/pull/16822
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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,
