Hendrik/xgboost
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3 Commits

Author SHA1 Message Date
Rong Ou
e4b74c4d22
Gradient based sampling for GPU Hist (#5093) 
* Implement gradient based sampling for GPU Hist tree method.
* Add samplers and handle compacted page in GPU Hist.
 2020-02-04 10:31:27 +08:00
Rong Ou
5b1715d97c Write ELLPACK pages to disk (#4879) 
* add ellpack source
* add batch param
* extract function to parse cache info
* construct ellpack info separately
* push batch to ellpack page
* write ellpack page.
* make sparse page source reusable
 2019-10-22 23:44:32 -04:00
Rong Ou
125bcec62e Move ellpack page construction into DMatrix (#4833) 2019-09-16 23:50:55 -04:00