jpmml / jpmml-lightgbm

Java library and command-line application for converting LightGBM models to PMML

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Support tweedie and gamma distributions

thomashan opened this issue · comments

What are the corresponding objective function names?

The poisson objective function is already supported:
https://github.com/jpmml/jpmml-lightgbm/blob/master/src/main/java/org/jpmml/lightgbm/GBDT.java#L456-L457

I haven't tried poisson explicitly.
I assumed poisson wasn't implemented because I've tried gamma and tweedie which weren't implemented and they all belong to the exponential family of distributions.

The objective names are gamma and tweedie.