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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/07/06 06:07:32 UTC
[GitHub] [spark] Catadanna commented on issue #25032: Add root degree to
PolynomialExpansion
Catadanna commented on issue #25032: Add root degree to PolynomialExpansion
URL: https://github.com/apache/spark/pull/25032#issuecomment-508900400
I used 3rd degree root for a polynomial curve, for temporal linear regression. The 3rd degree root allowed to obtain particular shape for several exceptional elements. Now, one may say that such a curve favorises high variance, yet it described well those elements as well as the others, and helped minimizing the error for the test set and future data.
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