Jiaming Yuan 1450aebb74
Fix pairwise objective with NDCG metric along with custom gain. (#10100)
* Fix pairwise objective with NDCG metric.

- Allow setting `ndcg_exp_gain` for `rank:pairwise`.

This is useful when using pairwise for objective but ndcg for metric.
2024-03-11 14:54:10 +08:00
..
2023-11-07 11:12:31 +08:00
2022-06-06 20:18:32 +08:00
2022-06-22 21:29:10 +08:00