private double rateSplit(AttributeTable first, AttributeTable second, ClassCounter allTable)
{
ClassCounter firstCounter = new ClassCounter(first);
ClassCounter secondCounter = new ClassCounter(second);
return(firstCounter.calculateGiniSplit(allTable) + secondCounter.calculateGiniSplit(allTable));
}
private Tuple <AttributeTable, AttributeTable> splitTableNumerical(int i)
{
AttributeTable first = new AttributeTable(attributes.GetRange(0, i), isNumerical);
AttributeTable second = new AttributeTable(attributes.GetRange(i, attributes.Count - i), isNumerical);
Tuple <AttributeTable, AttributeTable> toReturn = new Tuple <AttributeTable, AttributeTable>(first, second);
return(toReturn);
}
public ClassCounter(AttributeTable table)
{
classes = new List <string>();
counters = new List <int>();
foreach (var v in table.Attributes)
{
addClass(v.AttributeClass);
}
}
private Tuple <AttributeTable, AttributeTable> splitTableString(string s)
{
int a = 0;
int b = 0;
for (int i = 0; i < attributes.Count; i++)
{
if (attributes[i].getValueAsString().Equals(s))
{
a = i;
break;
}
}
for (int i = a; i < attributes.Count; i++)
{
if (attributes[i].getValueAsString().Equals(s))
{
b++;
}
else
{
break;
}
}
List <DataAttribute> leftList = new List <DataAttribute>();
List <DataAttribute> rightList = new List <DataAttribute>();
rightList.AddRange(attributes.GetRange(0, a));
leftList.AddRange(attributes.GetRange(a, b));
rightList.AddRange(attributes.GetRange(a + b, attributes.Count - a - b));
AttributeTable leftTable = new AttributeTable(leftList, isNumerical);
AttributeTable rightTable = new AttributeTable(rightList, isNumerical);
Tuple <AttributeTable, AttributeTable> toReturn = new Tuple <AttributeTable, AttributeTable>(leftTable, rightTable);
return(toReturn);
}
