yuhao yang created SPARK-20271:
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Summary: Add FuncTransformer to simplify custom transformer
creation
Key: SPARK-20271
URL: https://issues.apache.org/jira/browse/SPARK-20271
Project: Spark
Issue Type: New Feature
Components: ML
Affects Versions: 2.2.0
Reporter: yuhao yang
Just to share some code I implemented to help easily create a custom
Transformer in one line of code w.
{code} val labelConverter = new FuncTransformer((i: Double) => if (i >= 1) 1
else 0) {code}
This was used in many of my projects and is pretty helpful (Maybe I'm lazy..).
The transformer can be saved/loaded as other transformer and can be integrated
into a pipeline normally. It can be used widely in many use cases and you can
find some examples in the PR.
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