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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/data/test_data.cc
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@@ -50,7 +50,7 @@ TEST(SparsePage, PushCSC) {
inst = page[1];
ASSERT_EQ(inst.size(), 6);
std::vector<size_t> indices_sol {1, 2, 3};
for (size_t i = 0; i < inst.size(); ++i) {
for (int64_t i = 0; i < inst.size(); ++i) {
ASSERT_EQ(inst[i].index, indices_sol[i % 3]);
}
}