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Multi-target support for L1 error. (#8652)

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- Add matrix support to the median function.
- Iterate through each target for quantile computation.
This commit is contained in:
Jiaming Yuan
2023-01-11 05:51:14 +08:00
committed by GitHub
parent badeff1d74
commit cfa994d57f
19 changed files with 430 additions and 215 deletions
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src/tree/updater_approx.cc
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@@ -58,7 +58,7 @@ class GloablApproxBuilder {
monitor_->Start(__func__);
n_batches_ = 0;
int32_t n_total_bins = 0;
bst_bin_t n_total_bins = 0;
partitioner_.clear();
// Generating the GHistIndexMatrix is quite slow, is there a way to speed it up?
for (auto const &page : p_fmat->GetBatches<GHistIndexMatrix>(BatchSpec(param_, hess, task_))) {