GitHub user actuaryzhang opened a pull request:
https://github.com/apache/spark/pull/16675
[SPARK-19155][ML] make getFamily case insensitive
## What changes were proposed in this pull request?
This is a supplement to PR #16516 which did not make the value from
`getFamily` case insensitive. This affects the calculation of `dispersion` and
`pValue` since the value of family is checked there: ` model.getFamily ==
Binomial.name || model.getFamily == Poisson.name) `. Current tests of
poisson/binomial glm with weight fail when specifying 'Poisson' or 'Binomial'.
A simple fix is to is to convert the value of `getFamily` to lower case:
```
def getFamily: String = $(family).toLowerCase
```
## How was this patch tested?
Update existing tests for 'Poisson' and 'Binomial'.
@yanboliang @felixcheung @imatiach-msft
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/actuaryzhang/spark family
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16675.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 #16675
----
commit d33e2f135ae62df20337e2752753bcda2756a73d
Author: actuaryzhang <[email protected]>
Date: 2017-01-23T02:59:12Z
make getFamily case insensitive
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