/**
* Detects which leaf a itemset falls into
*
* @param itemset the itemset
* @return the leaf no.
*/
public final int leafNum(Itemset itemset) {
int lmNum = 0;
if (type == false) {
lmNum = lm;
} else {
if (itemset.getValue(splitAttr) <= splitValue) {
lmNum = leftNode.leafNum(itemset);
} else {
lmNum = rightNode.leafNum(itemset);
}
}
return lmNum;
}
/**
* Predicts the class value of an itemset by the tree
*
* @param itemset the itemset
* @param smooth =true, uses the smoothed model; otherwise uses the unsmoothed
* @inst itemsets
* @return the predicted value
*/
public final double predict(Itemset itemset, boolean smooth) {
double y = 0.0;
if (type == false) { // LEAF
if (smooth == true) {
y = smoothed.predict(itemset);
} else {
if (valueNode == true) {
y = unsmoothed.coeffs[0];
} else {
y = unsmoothed.predict(itemset);
}
}
} else { // NODE
if (itemset.getValue(splitAttr) <= splitValue) {
y = leftNode.predict(itemset, smooth);
} else {
y = rightNode.predict(itemset, smooth);
}
}
return y;
}