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| author | WeichenXu <WeichenXu123@outlook.com> | 2016-07-12 09:23:59 +0100 |
|---|---|---|
| committer | Sean Owen <sowen@cloudera.com> | 2016-07-12 09:23:59 +0100 |
| commit | fc11c509e234c5414687f7fbd13af113a1f52f10 (patch) | |
| tree | c7320d078c85f86bab8f12ca49f4d537f09373c3 /mllib | |
| parent | c9a6762150cfd62691a6361e05d2839b110fe8d0 (diff) | |
| download | spark-fc11c509e234c5414687f7fbd13af113a1f52f10.tar.gz spark-fc11c509e234c5414687f7fbd13af113a1f52f10.tar.bz2 spark-fc11c509e234c5414687f7fbd13af113a1f52f10.zip | |
[MINOR][ML] update comment where is inconsistent with code in ml.regression.LinearRegression
## What changes were proposed in this pull request?
In `train` method of `ml.regression.LinearRegression` when handling situation `std(label) == 0`
the code replace `std(label)` with `mean(label)` but the relative comment is inconsistent, I update it.
## How was this patch tested?
N/A
Author: WeichenXu <WeichenXu123@outlook.com>
Closes #14121 from WeichenXu123/update_lr_comment.
Diffstat (limited to 'mllib')
| -rw-r--r-- | mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala b/mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala index 0a4d98cab6..0477f71f32 100644 --- a/mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala +++ b/mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala @@ -263,7 +263,7 @@ class LinearRegression @Since("1.3.0") (@Since("1.3.0") override val uid: String } // if y is constant (rawYStd is zero), then y cannot be scaled. In this case - // setting yStd=1.0 ensures that y is not scaled anymore in l-bfgs algorithm. + // setting yStd=abs(yMean) ensures that y is not scaled anymore in l-bfgs algorithm. val yStd = if (rawYStd > 0) rawYStd else math.abs(yMean) val featuresMean = featuresSummarizer.mean.toArray val featuresStd = featuresSummarizer.variance.toArray.map(math.sqrt) |