本文整理汇总了C++中NumericalDifferentiation::calculate_derivative方法的典型用法代码示例。如果您正苦于以下问题：C++ NumericalDifferentiation::calculate_derivative方法的具体用法？C++ NumericalDifferentiation::calculate_derivative怎么用？C++ NumericalDifferentiation::calculate_derivative使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类NumericalDifferentiation的用法示例。
在下文中一共展示了NumericalDifferentiation::calculate_derivative方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: test_calculate_derivative
void NumericalDifferentiationTest::test_calculate_derivative(void)
{
message += "test_calculate_derivative\n";
NumericalDifferentiation nd;
// double x;
double d;
// Test
nd.set_numerical_differentiation_method(NumericalDifferentiation::ForwardDifferences);
// x = 0.0;
d = nd.calculate_derivative(*this, &NumericalDifferentiationTest::f1, 0.0);
assert_true(d == 1.0, LOG);
// Test
nd.set_numerical_differentiation_method(NumericalDifferentiation::CentralDifferences);
// x = 0.0;
d = nd.calculate_derivative(*this, &NumericalDifferentiationTest::f1, 0.0);
assert_true(d == 1.0, LOG);
}示例2: test_calculate_derivatives
void UnscalingLayerTest::test_calculate_derivatives(void)
{
message += "test_calculate_derivatives\n";
NumericalDifferentiation nd;
UnscalingLayer ul;
ul.set_display(false);
Vector<double> inputs;
Vector<double> derivative;
Vector<double> numerical_derivative;
// Test
ul.set(1);
ul.set_unscaling_method(UnscalingLayer::MinimumMaximum);
inputs.set(1, 0.0);
derivative = ul.calculate_derivatives(inputs);
assert_true(derivative == 1.0, LOG);
// Test
ul.set(1);
ul.set_unscaling_method(UnscalingLayer::MeanStandardDeviation);
inputs.set(1, 0.0);
derivative = ul.calculate_derivatives(inputs);
assert_true(derivative == 1.0, LOG);
// Test
if(numerical_differentiation_tests)
{
ul.set(3);
ul.initialize_random();
ul.set_unscaling_method(UnscalingLayer::MinimumMaximum);
inputs.set(3);
inputs.randomize_normal();
derivative = ul.calculate_derivatives(inputs);
numerical_derivative = nd.calculate_derivative(ul, &UnscalingLayer::calculate_outputs, inputs);
assert_true((derivative-numerical_derivative).calculate_absolute_value() < 1.0e-3, LOG);
}
// Test
if(numerical_differentiation_tests)
{
ul.set(3);
ul.initialize_random();
ul.set_unscaling_method(UnscalingLayer::MeanStandardDeviation);
inputs.set(3);
inputs.randomize_normal();
derivative = ul.calculate_derivatives(inputs);
numerical_derivative = nd.calculate_derivative(ul, &UnscalingLayer::calculate_outputs, inputs);
assert_true((derivative-numerical_derivative).calculate_absolute_value() < 1.0e-3, LOG);
}
}