| { | |
| "objective": "rank:ndcg", | |
| "eval_metric": "ndcg", | |
| "tree_method": "hist", | |
| "eta": 0.05, | |
| "max_depth": 6, | |
| "subsample": 0.8, | |
| "colsample_bytree": 0.8, | |
| "gamma": 0.1, | |
| "reg_alpha": 0.1, | |
| "reg_lambda": 1.0 | |
| } |
| { | |
| "objective": "rank:ndcg", | |
| "eval_metric": "ndcg", | |
| "tree_method": "hist", | |
| "eta": 0.05, | |
| "max_depth": 6, | |
| "subsample": 0.8, | |
| "colsample_bytree": 0.8, | |
| "gamma": 0.1, | |
| "reg_alpha": 0.1, | |
| "reg_lambda": 1.0 | |
| } |