private void generateLarge(ArrayList<Itemset> Lk, int clas) {
int i, j, size;
ArrayList<Itemset> Lnew;
Itemset newItemset, itemseti, itemsetj;
size = Lk.size();
if (size > 1) {
if (((Lk.get(0)).size() < this.nVariables) && ((Lk.get(0)).size() < this.depth)) {
Lnew = new ArrayList<Itemset>();
for (i = 0; i < size - 1; i++) {
itemseti = Lk.get(i);
for (j = i + 1; j < size; j++) {
itemsetj = Lk.get(j);
if (this.isCombinable(itemseti, itemsetj)) {
newItemset = itemseti.clone();
newItemset.add((itemsetj.get(itemsetj.size() - 1)).clone());
newItemset.calculateSupports(this.dataBase, this.train);
if (newItemset.getSupportClass()[0] >= this.minsup) Lnew.add(newItemset);
}
}
this.generateRules(Lnew, clas);
this.generateLarge(Lnew, clas);
Lnew.clear();
System.gc();
}
}
}
}
/** Clone function */
public Itemset clone() {
Itemset d = new Itemset(this.clas);
for (int i = 0; i < this.itemset.size(); i++) d.add((itemset.get(i)).clone());
d.clas = this.clas;
d.support = this.support;
d.supportRule = this.supportRule;
d.per = this.per;
d.hits = this.hits;
d.misses = this.misses;
return (d);
}
private void generateL2(int clas) {
int i, j, k, uncover;
Item item;
Itemset itemset;
this.L2.clear();
itemset = new Itemset(clas);
for (i = 0; i < this.nVariables; i++) {
if (this.dataBase.numLabels(i) > 1) {
for (j = 0; j < this.dataBase.numLabels(i); j++) {
item = new Item(i, j);
itemset.add(item);
itemset.calculateSupports(this.dataBase, this.train);
if (itemset.getSupportClass()[0] >= this.minsup) this.L2.add(itemset.clone());
itemset.remove(0);
}
}
}
this.generateRules(this.L2, clas);
}