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Fix CPU hist init for sparse dataset. (#4625)

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* Fix CPU hist init for sparse dataset.

* Implement sparse histogram cut.
* Allow empty features.

* Fix windows build, don't use sparse in distributed environment.

* Comments.

* Smaller threshold.

* Fix windows omp.

* Fix msvc lambda capture.

* Fix MSVC macro.

* Fix MSVC initialization list.

* Fix MSVC initialization list x2.

* Preserve categorical feature behavior.

* Rename matrix to sparse cuts.
* Reuse UseGroup.
* Check for categorical data when adding cut.

Co-Authored-By: Philip Hyunsu Cho <chohyu01@cs.washington.edu>

* Sanity check.

* Fix comments.

* Fix comment.
This commit is contained in:
Jiaming Yuan
2019-07-04 19:27:03 -04:00
committed by Philip Hyunsu Cho
parent b7a1f22d24
commit d9a47794a5
33 changed files with 681 additions and 299 deletions
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2
tests/cpp/tree/test_prune.cc
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@@ -13,7 +13,7 @@ namespace xgboost {
namespace tree {
TEST(Updater, Prune) {
int constexpr kNRows = 32, kNCols = 16;
int constexpr kNCols = 16;
std::vector<std::pair<std::string, std::string>> cfg;
cfg.emplace_back(std::pair<std::string, std::string>(