2 Commits

Author SHA1 Message Date
Jiaming Yuan
8e619010d0
Extract CPUExpandEntry and HistParam. (#7321)
* Remove kRootNid.
* Check for empty hessian.
2021-10-17 14:22:25 +08:00
Jiaming Yuan
149f209af6
Extract histogram builder from CPU Hist. (#7152)
* Extract the CPU histogram builder.
* Fix tests.
* Reduce number of histograms being built.
2021-08-09 21:15:21 +08:00