Testing different implemenations of linear trees

Linear Tree / Linear Forest / Linear Boosting

https://github.com/cerlymarco/linear-tree

LightGBM

https://lightgbm.readthedocs.io/en/latest/Parameters.html#linear_tree

Why linear_tree param is passed on dataset creation?
microsoft/LightGBM#4387

GBDT-PL – Gradient Boosting Decision Tree - Piece-wise linear

https://github.com/GBDT-PL/GBDT-PL