/// <summary>
/// Validates that a gene is connected to an input node.
/// </summary>
/// <param name="gene">The gene being validated.</param>
/// <param name="pathsChecked">A list of genes that have been traversed in the recursion.</param>
/// <param name="excludeFrozen">Exclude frozen genes from validation (true network).</param>
/// <returns>True if the gene is connected to an input node.</returns>
private bool ValidateGeneBackward(Gene gene, List <Gene> pathsChecked, bool excludeFrozen)
{
NodeInformation origin = NodePool.FindById(gene.link.InNode);
pathsChecked.Add(gene);
if (origin.IsInput())
{
return(true);
}
foreach (var path in Genes.Where(x => x.link.OutNode == gene.link.InNode && !pathsChecked.Contains(x)))
{
if (excludeFrozen && path.Frozen)
{
continue;
}
if (ValidateGeneBackward(path, pathsChecked, excludeFrozen))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Creates node from NodeInformation.
/// </summary>
/// <param name="id">A unique ID in the network.</param>
/// <param name="nodeInfo">Information of the node.</param>
public Node(int id, NodeInformation nodeInfo)
{
Type = nodeInfo.Type;
Id = id;
ActivationFunction = ActivationFunctions.GetActivationFunction(nodeInfo.Style);
if (Type == NodeType.BIAS)
{
InputValue = 1.0;
OutputValue = 1.0;
}
}
/// <summary>
/// Checks if the nodes are configured the same way.
/// </summary>
/// <param name="nodeInfo">The NodeInformation to compare to.</param>
/// <returns>True if the configuration is the same.</returns>
public bool IsSameAs(NodeInformation nodeInfo)
{
return(Type == nodeInfo.Type && Style == nodeInfo.Style);
}
/// <summary>
/// Adds a new node to the pool.
/// </summary>
/// <param name="nodeInfo">The information of the node added.</param>
/// <returns>The unique identifier of the node.</returns>
public static int Add(NodeInformation nodeInfo)
{
Pool.Add(nodeInfo);
return(Size() - 1);
}
