public void TestFindActiveIdentifiers()
{
// Build up a tree with OR node as root, child a (OR node) for value 0, child b (value node) for value 1.
// Create the nodes.
IParameterTreeNode a = new OrNode <int>("a", new CategoricalDomain <int>(new List <int> {
2, 5
}));
IParameterTreeNode b = new ValueNode <int>("b", new IntegerDomain());
var rootDecision = new OrNode <int>("or", new CategoricalDomain <int>(new List <int> {
0, 1
}));
// Create connections.
rootDecision.AddChild(0, a);
rootDecision.AddChild(1, b);
var parameterTree = new ParameterTree(rootDecision);
// Set value for roort node s.t. only node a should be active.
var values = new Dictionary <string, IAllele>(3)
{
{ "a", new Allele <int>(2) },
{ "b", new Allele <int>(7) },
{ "or", new Allele <int>(0) },
};
var activeIdentifiers = parameterTree.FindActiveIdentifiers(values.ToImmutableDictionary()).ToList();
var expectedActiveIdentifiers = new List <string> {
"or", "a"
};
Assert.True(
TestUtils.SetsAreEquivalent(activeIdentifiers, expectedActiveIdentifiers),
$"Active identifiers should be {TestUtils.PrintList(expectedActiveIdentifiers)}, but are {TestUtils.PrintList(activeIdentifiers)}.");
}
public void GetFilteredGenesHandlesOrNodesCorrectly()
{
// Build up a tree with OR node as root, child a (OR node) for value 0, child b (value node) for value 1.
// Create the nodes.
IParameterTreeNode a = new OrNode <int>("a", new CategoricalDomain <int>(new List <int> {
2, 5
}));
IParameterTreeNode b = new ValueNode <int>("b", new IntegerDomain());
OrNode <int> rootDecision = new OrNode <int>("or", new CategoricalDomain <int>(new List <int> {
0, 1
}));
// Create connections.
rootDecision.AddChild(0, a);
rootDecision.AddChild(1, b);
var parameterTree = new ParameterTree(rootDecision);
this._genome.SetGene("a", new Allele <int>(2));
this._genome.SetGene("b", new Allele <int>(7));
this._genome.SetGene("or", new Allele <int>(0));
var filteredGenes = this._genome.GetFilteredGenes(parameterTree);
var expectedFilteredGenes = new List <string> {
"or", "a"
};
Assert.True(
TestUtils.SetsAreEquivalent(filteredGenes.Keys, expectedFilteredGenes),
$"Filtered genes should be {TestUtils.PrintList(expectedFilteredGenes)}, but are {TestUtils.PrintList(filteredGenes.Keys)}.");
}
/// <summary>
/// Builds the following parameter tree:
/// - AND node as root
/// - 1st child of AND node: OR node with string either a or b (default: "a")
/// - 2nd child of AND node: value node with integer between 1 and 5 (default: 1)
/// - OR node, a branch: value node with integer (default: 42).
/// - OR node, b branch: value node with double between 0.1 and 0.8 (default: 0.2).
/// </summary>
/// <param name="includeDefaultValues">Indicates whether to add default values to the domains.</param>
/// <returns>The build parameter tree.</returns>
private static ParameterTree BuildParameterTree(bool includeDefaultValues = false)
{
// Create all parameter tree nodes.
var rootNode = new AndNode();
OrNode <string> decideAOrBNode = new OrNode <string>(
DecisionParameter,
new CategoricalDomain <string>(new List <string> {
"a", "b"
}, includeDefaultValues ? new Allele <string>("a") : (Allele <string>?)null));
IParameterNode integerParamNode = new ValueNode <int>(
GenomeBuilderTest.DiscreteParameter,
new IntegerDomain(defaultValue: includeDefaultValues ? new Allele <int>(42) : (Allele <int>?)null));
IParameterNode continuousParamNode = new ValueNode <double>(
GenomeBuilderTest.ContinuousParameter,
new ContinuousDomain(0.1, 0.8, includeDefaultValues ? new Allele <double>(0.2) : (Allele <double>?)null));
IParameterNode smallIntegerParamNode = new ValueNode <int>(
GenomeBuilderTest.SmallValueParameter,
new IntegerDomain(1, 5, includeDefaultValues ? new Allele <int>(1) : (Allele <int>?)null));
// Connect them.
decideAOrBNode.AddChild("a", integerParamNode);
decideAOrBNode.AddChild("b", continuousParamNode);
rootNode.AddChild(decideAOrBNode);
rootNode.AddChild(smallIntegerParamNode);
// Return tree.
return(new ParameterTree(rootNode));
}
/// <summary>
/// Creates a parameter tree which root is an OR node "decision". If that is true, a value node "a" is
/// evaluated, otherwise a value node "b".
/// </summary>
/// <returns>The created parameter tree.</returns>
private static ParameterTree CreateParameterTree()
{
var decisionNode =
new OrNode <bool>("decision", new CategoricalDomain <bool>(new List <bool> {
true, false
}));
decisionNode.AddChild(true, new ValueNode <double>("a", new ContinuousDomain()));
decisionNode.AddChild(false, new ValueNode <double>("b", new ContinuousDomain()));
return(new ParameterTree(decisionNode));
}
/// <summary>
/// Converts this node to an <see cref="OrNode{T}"/>.
/// </summary>
/// <typeparam name="T">The type of values the represented parameter can take.</typeparam>
/// <returns>The converted <see cref="OrNode{T}"/>.</returns>
/// <exception cref="XmlException">Thrown if the object was read from XML in such a way that it
/// does not represent a valid <see cref="IParameterTreeNode"/> object.</exception>
protected override IParameterTreeNode ConvertToParameterTreeNode<T>()
{
// Cast domain to correct type.
CategoricalDomain<T> categoricalDomain =
this.domain.ConvertToParameterTreeDomain() as CategoricalDomain<T>;
if (categoricalDomain == null)
{
throw new XmlException(
$"Domain of OR node '{this.id}' was not of type {typeof(CategoricalDomain<T>)} as expected.");
}
// Create OR node.
var node = new OrNode<T>(this.id, categoricalDomain);
// Add children:
foreach (var choice in this.choice)
{
// Check activator is of correct type.
if (!(choice.Item is T))
{
throw new XmlException(
$"OR node '{this.id}' had a choice of type {choice.Item.GetType()} instead of {typeof(T)}.");
}
// Add child.
node.AddChild((T)choice.Item, choice.child.ConvertToParameterTreeNode());
}
return node;
}
/// <summary>
/// Builds the following parameter tree:
/// - AND node as root
/// - 1st child of AND node: OR node with string either a or b
/// - 2nd child of AND node: value node with integer between 1 and 5
/// - OR node, a branch: value node with integer
/// - OR node, b branch: value node with double between 0.1 and 0.8.
/// </summary>
/// <returns>The build parameter tree.</returns>
private static ParameterTree BuildParameterTree()
{
// Create all parameter tree nodes.
var rootNode = new AndNode();
OrNode <string> decideAOrBNode = new OrNode <string>(
DecisionParameter,
new CategoricalDomain <string>(new List <string> {
"a", "b"
}));
IParameterNode smallIntegerParamNode = new ValueNode <int>(GenomeBuilderTest.SmallValueParameter, new IntegerDomain(1, 5));
IParameterNode integerParamNode = new ValueNode <int>(GenomeBuilderTest.DiscreteParameter, new IntegerDomain());
IParameterNode continuousParamNode = new ValueNode <double>(
GenomeBuilderTest.ContinuousParameter,
new ContinuousDomain(0.1, 0.8));
// Connect them.
decideAOrBNode.AddChild("a", integerParamNode);
decideAOrBNode.AddChild("b", continuousParamNode);
rootNode.AddChild(decideAOrBNode);
rootNode.AddChild(smallIntegerParamNode);
// Return tree.
return(new ParameterTree(rootNode));
}
public void GetChildWorksIfChildExists()
{
var decisionNode = new OrNode <string>(
"test",
new CategoricalDomain <string>(new List <string> {
"a"
}));
var childNode = new ValueNode <int>("value", new IntegerDomain());
decisionNode.AddChild("a", childNode);
IParameterTreeNode returnedChildNode;
Assert.True(decisionNode.TryGetChild("a", out returnedChildNode), "Child should be found.");
Assert.Equal(childNode, returnedChildNode);
}