Set ndcg to default for LTR. (#8822)

- Add document. - Add tests. - Use `ndcg` with `topk` as default.
2023-06-09 23:31:33 +08:00
parent e4dd6051a0
commit 1fcc26a6f8
18 changed files with 842 additions and 19 deletions
--- a/doc/tutorials/index.rst
+++ b/doc/tutorials/index.rst
@@ -21,6 +21,7 @@ See `Awesome XGBoost <https://github.com/dmlc/xgboost/tree/master/demo>`_ for mo
  monotonic
  rf
  feature_interaction_constraint
+  learning_to_rank
  aft_survival_analysis
  c_api_tutorial
  input_format