diff options
Diffstat (limited to 'docs/mllib-guide.md')
| -rw-r--r-- | docs/mllib-guide.md | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/docs/mllib-guide.md b/docs/mllib-guide.md index 598374f66d..f8e879496c 100644 --- a/docs/mllib-guide.md +++ b/docs/mllib-guide.md @@ -102,6 +102,8 @@ In the `spark.mllib` package, there were several breaking changes. The first ch * In `DecisionTree`, the deprecated class method `train` has been removed. (The object/static `train` methods remain.) * In `Strategy`, the `checkpointDir` parameter has been removed. Checkpointing is still supported, but the checkpoint directory must be set before calling tree and tree ensemble training. * `PythonMLlibAPI` (the interface between Scala/Java and Python for MLlib) was a public API but is now private, declared `private[python]`. This was never meant for external use. +* In linear regression (including Lasso and ridge regression), the squared loss is now divided by 2. + So in order to produce the same result as in 1.2, the regularization parameter needs to be divided by 2 and the step size needs to be multiplied by 2. ## Previous Spark Versions |