Jiaming Yuan 9c1103e06c
[Breaking] Set output margin to True for custom objective. (#5564)
* Set output margin to True for custom objective in Python and R.

* Add a demo for writing multi-class custom objective function.

* Run tests on selected demos.
2020-04-20 20:44:12 +08:00

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XGBoost Python Feature Walkthrough
==================================
* [Basic walkthrough of wrappers](basic_walkthrough.py)
* [Customize loss function, and evaluation metric](custom_objective.py)
* [Re-implement RMSLE as customized metric and objective](custom_rmsle.py)
* [Re-Implement `multi:softmax` objective as customized objective](custom_softmax.py)
* [Boosting from existing prediction](boost_from_prediction.py)
* [Predicting using first n trees](predict_first_ntree.py)
* [Generalized Linear Model](generalized_linear_model.py)
* [Cross validation](cross_validation.py)
* [Predicting leaf indices](predict_leaf_indices.py)
* [Sklearn Wrapper](sklearn_examples.py)
* [Sklearn Parallel](sklearn_parallel.py)
* [Sklearn access evals result](sklearn_evals_result.py)
* [Access evals result](evals_result.py)
* [External Memory](external_memory.py)