public void Choice_option_with_one_value_sampling_from_uniform_space_test()
{
var option = new ChoiceOption("a");
option.SampleFromFeatureSpace(new[] { 0.0 }).AsType <string>().Should().Be("a");
option.SampleFromFeatureSpace(new[] { 0.99 }).AsType <string>().Should().Be("a");
}
public void Choice_option_dimension_should_be_0_if_contains_only_one_value()
{
var option = new ChoiceOption("b");
option.FeatureSpaceDim.Should().Be(0);
option.Default.Should().BeEquivalentTo();
option.SampleFromFeatureSpace(new double[0]).AsType <string>().Should().Be("b");
option.MappingToFeatureSpace(Parameter.FromString("b")).Should().BeEmpty();
}
public void Choice_option_sampling_from_uniform_space_test()
{
var option = new ChoiceOption("a", "b", "c");
option.SampleFromFeatureSpace(new[] { 0.0 }).AsType <string>().Should().Be("a");
option.SampleFromFeatureSpace(new[] { 0.33 }).AsType <string>().Should().Be("a");
option.SampleFromFeatureSpace(new[] { 0.34 }).AsType <string>().Should().Be("b");
option.SampleFromFeatureSpace(new[] { 0.66 }).AsType <string>().Should().Be("b");
option.SampleFromFeatureSpace(new[] { 0.67 }).AsType <string>().Should().Be("c");
option.SampleFromFeatureSpace(new[] { 0.97 }).AsType <string>().Should().Be("c");
option.SampleFromFeatureSpace(new[] { 0.999999999 }).AsType <string>().Should().Be("c");
option.SampleFromFeatureSpace(new[] { 1.0 }).AsType <string>().Should().Be("c");
}
public void Choice_option_mapping_to_uniform_space_test()
{
var option = new ChoiceOption("a", "b", "c");
option.MappingToFeatureSpace(Parameter.FromString("a"))[0].Should().BeApproximately(0, 1e-5);
option.MappingToFeatureSpace(Parameter.FromString("b"))[0].Should().BeApproximately(0.333333, 1e-5);
option.MappingToFeatureSpace(Parameter.FromString("c"))[0].Should().BeApproximately(0.666666, 1e-5);
option = new ChoiceOption("a", "b", "c", "d");
var parameter = option.SampleFromFeatureSpace(new[] { 0.5 });
parameter.AsType <string>().Should().Be("c");
option.MappingToFeatureSpace(parameter).Should().Equal(0.5);
}