GitHub user leifker opened a pull request:
https://github.com/apache/spark/pull/17306
[MLLIB] Allow multiple pipelines when tuning
## What changes were proposed in this pull request?
Updated CrossValidator and TrainValidationSplit to be able to
accept multiple pipelines for testing different algorithms
and/or being able to better control tuning combinations.
Maintains backwards compatible API and reads legacy
serialized objects.
## How was this patch tested?
Unit tests
Author: David Leifker <[email protected]>
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/leifker/spark multiple-estimators
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17306.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 #17306
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