Missing lightgbm learning parameter - min_data_in_leaf

[louis925]

The MMLSpark version of LightGBMseems seems to miss the parameter min_data_in_leaf, which is actually an important learning parameter in LightGBM
https://lightgbm.readthedocs.io/en/latest/Parameters.html#min_data_in_leaf

While tracing the source code, I was not able to find it in
https://github.com/Azure/mmlspark/blob/8bb7d861981fd519d4623cc903cbe9919762cb3f/src/main/scala/com/microsoft/ml/spark/lightgbm/LightGBMParams.scala

I was wondering why mmlspark didn't have this parameter, and what is the default value used by the underlying lightgbm if it was not set by the mmlspark?

[welcome]

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[RefiPeretz]

I'm not a developer but I had the same problem. They didn't implement all possible parameters to LightGBM for me it was to clone add it myself and compile my own version.

[imatiach-msft]

closing as this parameter has been added in latest, see
#760

[eromoe]

rc1.0.0 doesn't contain this .