Github user vistep commented on the issue:
https://github.com/apache/spark/pull/19023
@falaki Hi, do you mean the pipeline models in scala API? I agree with you
about this. However, as I can see, there is little feature transformer
functions in SparkR, which makes building a practical data minning project
totally on SparkR very diffcult. So, I thinking adding some feature
transforming functions is meaningful.
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