private void Learn()
{
//build the tree using CART algorithm
Queue <DecisionTreeNode> qe = new Queue <DecisionTreeNode>();
qe.Enqueue(Head);
int counter = 0;
while (GeneralMethods.FindErrorSum(this) > 0)
{
DecisionTreeNode tempNode = new DecisionTreeNode();
tempNode = qe.Dequeue();
if (GeneralMethods.CountError(tempNode.Elements) != 0)
{
tempNode.Rule = new Rule(tempNode.Elements);
AddChildren(tempNode);
qe.Enqueue(tempNode.LeftChild);
qe.Enqueue(tempNode.RightChild);
counter++;
}
}
TreeError = GeneralMethods.FindErrorSum(this);
}
public static double FindErrorInNode(Data[] elements, int allElements)
{
double error = GeneralMethods.CountError(elements) * elements.Length;
return(error / allElements);
}