/// <summary>
/// Decide whether to follow the true-branch or the false-branch.
/// Compare the feature / value stored in the node,
/// to the example we're considering.
/// </summary>
private static DecisionNode Classify(Dictionary <string, string> dataRow, DecisionNode node)
{
if (node.IsLeaf())
{
return(node);
}
if (node.Question.IsMatch(dataRow))
{
return(Classify(dataRow, node.TrueBranch));
}
else
{
return(Classify(dataRow, node.FalseBranch));
}
}
/// <summary>
/// World's most elegant tree printing function.
/// </summary>
public static void PrintTree(DecisionNode node, string spacing = "")
{
if (node.IsLeaf())
{
DebugLog(spacing + node, ConsoleColor.Green);
return;
}
DebugLog(spacing + node.Question);
DebugLog(spacing + "--> True:");
PrintTree(node.TrueBranch, spacing + " ");
DebugLog(spacing + "--> False:");
PrintTree(node.FalseBranch, spacing + " ");
}
