xgboost/plugin/example/README.md

XGBoost Plugin Example

This folder provides an example of implementing xgboost plugin.

There are three steps you need to do to add a plugin to xgboost

• Create your source .cc file, implement a new extension
  • In this example custom_obj.cc
• Register this extension to xgboost via a registration macro
  • In this example XGBOOST_REGISTER_OBJECTIVE in this line
• Add a line to xgboost/plugin/CMakeLists.txt:

target_sources(objxgboost PRIVATE ${xgboost_SOURCE_DIR}/plugin/example/custom_obj.cc)

Then you can test this plugin by using objective=mylogistic parameter.