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tests/cpp: Add tests for Metric RMSE

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This commit is contained in:
AbdealiJK 2016-12-04 13:15:09 +05:30 committed by Tianqi Chen
parent 582c373274
commit 03abd47f49
3 changed files with 32 additions and 0 deletions
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11
tests/cpp/helpers.cc
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@ -49,3 +49,14 @@ void CheckObjFunction(xgboost::ObjFunction * obj,
<< " weight=" << weights[i]; << " weight=" << weights[i];
} }
} }
xgboost::bst_float GetMetricEval(xgboost::Metric * metric,
std::vector<xgboost::bst_float> preds,
std::vector<xgboost::bst_float> labels,
std::vector<xgboost::bst_float> weights) {
xgboost::MetaInfo info;
info.num_row = labels.size();
info.labels = labels;
info.weights = weights;
return metric->Eval(preds, info, false);
}

7
tests/cpp/helpers.h
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@ -13,6 +13,7 @@
#include <xgboost/base.h> #include <xgboost/base.h>
#include <xgboost/objective.h> #include <xgboost/objective.h>
#include <xgboost/metric.h>
std::string TempFileName(); std::string TempFileName();
@ -29,4 +30,10 @@ void CheckObjFunction(xgboost::ObjFunction * obj,
std::vector<xgboost::bst_float> out_grad, std::vector<xgboost::bst_float> out_grad,
std::vector<xgboost::bst_float> out_hess); std::vector<xgboost::bst_float> out_hess);
xgboost::bst_float GetMetricEval(
xgboost::Metric * metric,
std::vector<xgboost::bst_float> preds,
std::vector<xgboost::bst_float> labels,
std::vector<xgboost::bst_float> weights = std::vector<xgboost::bst_float> ());
#endif #endif

14
tests/cpp/metric/test_elementwise_metric.cc Normal file
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@ -0,0 +1,14 @@
// Copyright by Contributors
#include <xgboost/metric.h>
#include "../helpers.h"
TEST(Metric, RMSE) {
xgboost::Metric * metric = xgboost::Metric::Create("rmse");
ASSERT_STREQ(metric->Name(), "rmse");
EXPECT_NEAR(GetMetricEval(metric, {0, 1}, {0, 1}), 0, 1e-10);
EXPECT_NEAR(GetMetricEval(metric,
{0.1, 0.9, 0.1, 0.9},
{ 0, 0, 1, 1}),
0.6403, 0.001);
}