42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
/**
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* @file de_test.cpp
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* @author Rahul Ganesh Prabhu
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*
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* ensmallen is free software; you may redistribute it and/or modify it under
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* the terms of the 3-clause BSD license. You should have received a copy of
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* the 3-clause BSD license along with ensmallen. If not, see
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* http://www.opensource.org/licenses/BSD-3-Clause for more information.
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*/
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#include "../include/ensmallen.hpp"
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#include "catch.hpp"
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#include "test_function_tools.hpp"
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using namespace ens;
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using namespace ens::test;
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/**
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* Train and test a logistic regression function using DE optimizer
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*/
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TEST_CASE("DELogisticRegressionTest", "[DETest]")
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{
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arma::mat data, testData, shuffledData;
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arma::Row<size_t> responses, testResponses, shuffledResponses;
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LogisticRegressionTestData(data, testData, shuffledData,
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responses, testResponses, shuffledResponses);
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LogisticRegression<> lr(shuffledData, shuffledResponses, 0.5);
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DE opt(200, 1000, 0.6, 0.8);
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arma::mat coordinates = lr.GetInitialPoint();
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opt.Optimize(lr, coordinates);
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// Ensure that the error is close to zero.
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const double acc = lr.ComputeAccuracy(data, responses, coordinates);
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REQUIRE(acc == Approx(100.0).epsilon(0.003)); // 0.3% error tolerance.
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const double testAcc = lr.ComputeAccuracy(testData, testResponses,
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coordinates);
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REQUIRE(testAcc == Approx(100.0).epsilon(0.006)); // 0.6% error tolerance.
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}
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