Hendrik/xgboost
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3 Commits

Author SHA1 Message Date
Jiaming Yuan
29a4cfe400
Group aware GPU sketching. (#5551) 
* Group aware GPU weighted sketching.

* Distribute group weights to each data point.
* Relax the test.
* Validate input meta info.
* Fix metainfo copy ctor.
 2020-04-20 17:18:52 +08:00
sriramch
ee81ba8e1f implementation of map ranking algorithm on gpu (#5129) 
* - implementation of map ranking algorithm
  - also effected necessary suggestions mentioned in the earlier ranking pr's
  - made some performance improvements to the ndcg algo as well
 2019-12-27 12:05:37 +13:00
sriramch
2abe69d774 - ndcg ltr implementation on gpu (#5004) 
* - ndcg ltr implementation on gpu
  - this is a follow-up to the pairwise ltr implementation
 2019-11-13 11:21:04 +13:00