Github user mengxr commented on the pull request:
https://github.com/apache/spark/pull/1484#issuecomment-62677686
@avulanov We have ChiSq tests implemented under "mllib.stat.Statistics":
https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/mllib/stat/Statistics.scala#L166
Could you please call the method there and select top features based on the
test statistics? This would make us have a simple place for ChiSq
implementation.
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