2 Examples🔗ℹ

Each example below is a literate program: the prose and the code you see are the same source that lives in the package’s "xgboost/examples/" directory and is exercised by the test suite, so the walkthroughs never drift from working code. Every example provides a run-example thunk; its companion harness in "xgboost/examples/test/" drives it and checks the result (run with raco test).

The examples build up in arcs. The core tasks start from the DMatrix container and the high-level train/predict loop. Later arcs — built-in and custom objectives, model IO, DMatrix mechanics, booster inspection, serving-style in-place prediction, parameter recipes and ranking, the process-global APIs, and GPU training — layer on from there.