52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
/*!
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* Copyright 2018-2019 by Contributors
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*/
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#include <xgboost/linear_updater.h>
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#include "../helpers.h"
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#include "xgboost/gbm.h"
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TEST(Linear, shotgun) {
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auto mat = xgboost::CreateDMatrix(10, 10, 0);
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auto lparam = xgboost::CreateEmptyGenericParam(GPUIDX);
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{
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auto updater = std::unique_ptr<xgboost::LinearUpdater>(
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xgboost::LinearUpdater::Create("shotgun", &lparam));
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updater->Configure({{"eta", "1."}});
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xgboost::HostDeviceVector<xgboost::GradientPair> gpair(
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(*mat)->Info().num_row_, xgboost::GradientPair(-5, 1.0));
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xgboost::gbm::GBLinearModel model;
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model.param.num_feature = (*mat)->Info().num_col_;
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model.param.num_output_group = 1;
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model.LazyInitModel();
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updater->Update(&gpair, (*mat).get(), &model, gpair.Size());
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ASSERT_EQ(model.bias()[0], 5.0f);
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}
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{
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auto updater = std::unique_ptr<xgboost::LinearUpdater>(
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xgboost::LinearUpdater::Create("shotgun", &lparam));
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EXPECT_ANY_THROW(updater->Configure({{"feature_selector", "random"}}));
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}
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delete mat;
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}
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TEST(Linear, coordinate) {
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auto mat = xgboost::CreateDMatrix(10, 10, 0);
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auto lparam = xgboost::CreateEmptyGenericParam(GPUIDX);
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auto updater = std::unique_ptr<xgboost::LinearUpdater>(
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xgboost::LinearUpdater::Create("coord_descent", &lparam));
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updater->Configure({{"eta", "1."}});
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xgboost::HostDeviceVector<xgboost::GradientPair> gpair(
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(*mat)->Info().num_row_, xgboost::GradientPair(-5, 1.0));
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xgboost::gbm::GBLinearModel model;
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model.param.num_feature = (*mat)->Info().num_col_;
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model.param.num_output_group = 1;
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model.LazyInitModel();
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updater->Update(&gpair, (*mat).get(), &model, gpair.Size());
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ASSERT_EQ(model.bias()[0], 5.0f);
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delete mat;
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}
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