public void addChild(object childname, string childtype)
{
if (Children == null)
{
Children = new List <SimpleNode>();
}
if (childname is SimpleNode)
{
Children.Add((SimpleNode)childname);
}
else
{
SimpleNode ch = new SimpleNode();
ch.initNode((string)childname, "default", null, null);
Children.Add(ch);
}
}
public SimpleNode buildtree(object nd, DataHolder dataholder, List <string> features_to_exclude, string default_class)
{
dataholder.CalculateNumbers();
SimpleNode root = null;
if (dataholder.IsPure)
{
root = new SimpleNode();
root.initNode(dataholder.getPureClass(), "class", null, dataholder);
return(root);
}
if (dataholder.Features_list != null)
{
/*if (dataholder.Featurestoexclude == null) {
* default_class = dataholder.getMajorityClass();
* root = new SimpleNode();
* root.initNode(default_class, "class", null, dataholder);
* //return root;
* }
* else */
int lhs = dataholder.Featurestoexclude != null ? dataholder.Featurestoexclude.Count : 0;
int rhs = dataholder.Features_list != null ? dataholder.Features_list.Count - 1 : 0;
if (lhs == rhs)
{
default_class = dataholder.getMajorityClass();
root = new SimpleNode();
root.initNode(default_class, "class", null, dataholder);
//return root;
}
else
{
root = new SimpleNode();
root.initNode(dataholder.Best_feature, "feature", null, dataholder);
foreach (string uniq in dataholder.Feature_uniqueValues[dataholder.Best_feature])
{
DataHolder new_dholder = new DataHolder(dataholder.getSubset(uniq, dataholder.Best_feature), dataholder.Featurestoexclude);
new_dholder.CalculateNumbers();
SimpleNode node = new SimpleNode();
node.initNode(uniq, "value", null, new_dholder);
if (new_dholder.IsEmpty())
{
node.addChild(dataholder.getMajorityClass(), "class");
}
else
{
if (features_to_exclude == null)
{
features_to_exclude = new List <string>();
}
features_to_exclude.Add(new_dholder.Best_feature);
new_dholder.removeFeatures(features_to_exclude);
node.addChild(buildtree(uniq, new_dholder, features_to_exclude, default_class), null);
}
root.addChild(node, node.Nodetype);
}
}
}
return(root);
}
