/**
* This function fits the rule to the data which it overlaps. This way the rule can only
* interpolate but not extrapolate.
*
* @param instances The data to which the rule shall be fitted
*/
public void fitAndSetCoreBound(Instances instances) {
if (m_Antds == null) return;
boolean[] antExistingForDimension = new boolean[instances.numAttributes() - 1];
for (int i = 0; i < m_Antds.size(); i++) {
antExistingForDimension[((Antd) m_Antds.elementAt(i)).att.index()] = true;
}
FastVector newAntds = new FastVector(10);
// for (int i=0; i < instances.numAttributes()-1; i++){
for (int iterator = 0; iterator < m_Antds.size(); iterator++) {
int i = ((Antd) m_Antds.elementAt(iterator)).getAttr().index();
if (!antExistingForDimension[i]) continue; // Excluding non existant antecedents
Instances instancesWithoutMissingValues = new Instances(instances);
instancesWithoutMissingValues.deleteWithMissing(i);
if (instancesWithoutMissingValues.attribute(i).isNumeric()
&& instancesWithoutMissingValues.numInstances() > 0) {
boolean bag0AntdExists = false;
boolean bag1AntdExists = false;
for (int j = 0; j < m_Antds.size(); j++) {
if (((Antd) m_Antds.elementAt(j)).att.index() == i) {
if (((Antd) m_Antds.elementAt(j)).value == 0) {
bag0AntdExists = true;
} else {
bag1AntdExists = true;
}
newAntds.addElement((Antd) m_Antds.elementAt(j));
}
}
double higherCore = Double.NaN;
double lowerCore = Double.NaN;
if (!bag0AntdExists) {
if (Double.isNaN(higherCore))
higherCore =
instancesWithoutMissingValues.kthSmallestValue(
i, instancesWithoutMissingValues.numInstances());
NumericAntd antd;
antd = new NumericAntd(instancesWithoutMissingValues.attribute(i));
antd.value = 0;
antd.splitPoint = higherCore;
newAntds.addElement(antd);
}
if (!bag1AntdExists) {
if (Double.isNaN(lowerCore))
lowerCore = instancesWithoutMissingValues.kthSmallestValue(i, 1);
NumericAntd antd;
antd = new NumericAntd(instancesWithoutMissingValues.attribute(i));
antd.value = 1;
antd.splitPoint = lowerCore;
newAntds.addElement(antd);
}
} else {
for (int j = 0; j < m_Antds.size(); j++) {
if (((Antd) m_Antds.elementAt(j)).att.index() == i) {
newAntds.addElement(m_Antds.elementAt(j));
}
}
}
}
m_Antds = newAntds;
}
