f0064c07ab
* 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
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
/*!
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* Copyright 2015-2019 by Contributors
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* \file metric_registry.cc
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* \brief Registry of objective functions.
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*/
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#include <dmlc/registry.h>
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#include <xgboost/metric.h>
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#include <xgboost/generic_parameters.h>
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namespace dmlc {
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DMLC_REGISTRY_ENABLE(::xgboost::MetricReg);
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}
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namespace xgboost {
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Metric* Metric::Create(const std::string& name, GenericParameter const* tparam) {
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std::string buf = name;
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std::string prefix = name;
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const char* param;
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auto pos = buf.find('@');
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if (pos == std::string::npos) {
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if (!buf.empty() && buf.back() == '-') {
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// Metrics of form "metric-"
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prefix = buf.substr(0, buf.length() - 1); // Chop off '-'
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param = "-";
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} else {
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prefix = buf;
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param = nullptr;
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}
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auto *e = ::dmlc::Registry< ::xgboost::MetricReg>::Get()->Find(prefix.c_str());
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if (e == nullptr) {
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LOG(FATAL) << "Unknown metric function " << name;
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}
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auto p_metric = (e->body)(param);
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p_metric->tparam_ = tparam;
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return p_metric;
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} else {
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std::string prefix = buf.substr(0, pos);
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auto *e = ::dmlc::Registry< ::xgboost::MetricReg>::Get()->Find(prefix.c_str());
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if (e == nullptr) {
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LOG(FATAL) << "Unknown metric function " << name;
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}
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auto p_metric = (e->body)(buf.substr(pos + 1, buf.length()).c_str());
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p_metric->tparam_ = tparam;
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return p_metric;
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}
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}
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} // namespace xgboost
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namespace xgboost {
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namespace metric {
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// List of files that will be force linked in static links.
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DMLC_REGISTRY_LINK_TAG(elementwise_metric);
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DMLC_REGISTRY_LINK_TAG(multiclass_metric);
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DMLC_REGISTRY_LINK_TAG(rank_metric);
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} // namespace metric
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} // namespace xgboost
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