xgboost/src/gbm/gbm.cc
AbdealiJK 6f16f0ef58 Use bst_float consistently throughout (#1824)
* Fix various typos

* Add override to functions that are overridden

gcc gives warnings about functions that are being overridden by not
being marked as oveirridden. This fixes it.

* Use bst_float consistently

Use bst_float for all the variables that involve weight,
leaf value, gradient, hessian, gain, loss_chg, predictions,
base_margin, feature values.

In some cases, when due to additions and so on the value can
take a larger value, double is used.

This ensures that type conversions are minimal and reduces loss of
precision.
2016-11-30 10:02:10 -08:00

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/*!
* Copyright 2015 by Contributors
* \file gbm.cc
* \brief Registry of gradient boosters.
*/
#include <xgboost/gbm.h>
#include <dmlc/registry.h>
namespace dmlc {
DMLC_REGISTRY_ENABLE(::xgboost::GradientBoosterReg);
} // namespace dmlc
namespace xgboost {
GradientBooster* GradientBooster::Create(
const std::string& name,
const std::vector<std::shared_ptr<DMatrix> >& cache_mats,
bst_float base_margin) {
auto *e = ::dmlc::Registry< ::xgboost::GradientBoosterReg>::Get()->Find(name);
if (e == nullptr) {
LOG(FATAL) << "Unknown gbm type " << name;
}
return (e->body)(cache_mats, base_margin);
}
} // namespace xgboost
namespace xgboost {
namespace gbm {
// List of files that will be force linked in static links.
DMLC_REGISTRY_LINK_TAG(gblinear);
DMLC_REGISTRY_LINK_TAG(gbtree);
} // namespace gbm
} // namespace xgboost