dlib C++ Library - find_optimal_parameters.cpp

// Copyright (C) 2008 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#include <dlib/optimization/find_optimal_parameters.h>
#include "tester.h"
namespace 
{
 using namespace test;
 using namespace dlib;
 using namespace std;
 logger dlog("test.find_optimal_parameters");
// ----------------------------------------------------------------------------------------
 class find_optimal_parameters : public tester
 {
 public:
 find_optimal_parameters (
 ) :
 tester ("test_find_optimal_parameters",
 "Runs tests on find_optimal_parameters().")
 {}
 void perform_test (
 )
 {
 print_spinner();
 matrix<double,0,1> params = {0.5, 0.5};
 dlib::find_optimal_parameters(4, 0.001, 100, params, {-0.1, -0.01}, {5, 5}, [](const matrix<double,0,1>& params) {
 cout << ".";
 return sum(squared(params));
 });
 matrix<double,0,1> true_params = {0,0};
 DLIB_TEST(max(abs(true_params - params)) < 1e-10);
 params = {0.1};
 dlib::find_optimal_parameters(4, 0.001, 100, params, {-0.01}, {5}, [](const matrix<double,0,1>& params) {
 cout << ".";
 return sum(squared(params));
 });
 true_params = {0};
 DLIB_TEST(max(abs(true_params - params)) < 1e-10);
 }
 } a;
}