private static void AddRelationRow(ArffRelation relation, string row, List <int> ignoredCols)
{
string[] values = row.Split(',');
List <double> rowValues = new List <double>();
int effectiveCol = 0;
for (int i = 0; i < values.Length; i++)
{
if (!ignoredCols.Contains(i))
{
if (values[i] == "?")
{
rowValues.Add(double.MaxValue);
}
else if (relation.Columns[effectiveCol].IsReal)
{
rowValues.Add(double.Parse(values[i]));
}
else
{
rowValues.Add(relation.Columns[effectiveCol].NominalValues[values[i]]);
}
effectiveCol++;
}
}
var toAdd = new ArffRow(relation, rowValues.ToList());
relation.AddRow(toAdd);
}
public double GetDistance(ArffRow from)
{
double distance = 0;
for (int col = 0; col < _values.Count; col++)
{
if (this.ColumnIsUnkown(col) || from.ColumnIsUnkown(col))
{
distance += 1;
}
else if (_relation.Columns[col].IsReal)
{
distance += Math.Pow(from._values[col] - this._values[col], 2);
}
else
{
distance += this._values[col] == from._values[col] ? 0 : 1;
}
}
distance = Math.Sqrt(distance);
return(distance);
}
public void AddRow(ArffRow row)
{
_rows.Add(row);
}