GitHub user feynmanliang opened a pull request:
https://github.com/apache/spark/pull/7361
[SPARK-9005][MLlib]Fix RegressionMetrics computation of explainedVariance
and r2
Fixes implementation of `explainedVariance` and `r2` to be consistent with
their definitions as described in
[SPARK-9005](https://issues.apache.org/jira/browse/SPARK-9005).
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/feynmanliang/spark
SPARK-9005-RegressionMetrics-bugs
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7361.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 #7361
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commit 4c4e56f8a429b67e4597e9c9c9635e354a22ea88
Author: Feynman Liang <[email protected]>
Date: 2015-07-13T00:09:01Z
Fix RegressionMetrics computation of explainedVariance and r2
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