xgboost/src/linear/linear_updater.cc
Jiaming Yuan f0064c07ab
Refactor configuration [Part II]. (#4577)
* Refactor configuration [Part II].

* General changes:
** Remove `Init` methods to avoid ambiguity.
** Remove `Configure(std::map<>)` to avoid redundant copying and prepare for
   parameter validation. (`std::vector` is returned from `InitAllowUnknown`).
** Add name to tree updaters for easier debugging.

* Learner changes:
** Make `LearnerImpl` the only source of configuration.

    All configurations are stored and carried out by `LearnerImpl::Configure()`.

** Remove booster in C API.

    Originally kept for "compatibility reason", but did not state why.  So here
    we just remove it.

** Add a `metric_names_` field in `LearnerImpl`.
** Remove `LazyInit`.  Configuration will always be lazy.
** Run `Configure` before every iteration.

* Predictor changes:
** Allocate both cpu and gpu predictor.
** Remove cpu_predictor from gpu_predictor.

    `GBTree` is now used to dispatch the predictor.

** Remove some GPU Predictor tests.

* IO

No IO changes.  The binary model format stability is tested by comparing
hashing value of save models between two commits
2019-07-20 08:34:56 -04:00

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/*!
* Copyright 2018
*/
#include <xgboost/linear_updater.h>
#include <dmlc/registry.h>
#include "./param.h"
namespace dmlc {
DMLC_REGISTRY_ENABLE(::xgboost::LinearUpdaterReg);
} // namespace dmlc
namespace xgboost {
LinearUpdater* LinearUpdater::Create(const std::string& name, GenericParameter const* lparam) {
auto *e = ::dmlc::Registry< ::xgboost::LinearUpdaterReg>::Get()->Find(name);
if (e == nullptr) {
LOG(FATAL) << "Unknown linear updater " << name;
}
auto p_linear = (e->body)();
p_linear->learner_param_ = lparam;
return p_linear;
}
} // namespace xgboost
namespace xgboost {
namespace linear {
DMLC_REGISTER_PARAMETER(LinearTrainParam);
// List of files that will be force linked in static links.
DMLC_REGISTRY_LINK_TAG(updater_shotgun);
DMLC_REGISTRY_LINK_TAG(updater_coordinate);
#ifdef XGBOOST_USE_CUDA
DMLC_REGISTRY_LINK_TAG(updater_gpu_coordinate);
#endif // XGBOOST_USE_CUDA
} // namespace linear
} // namespace xgboost