private TIntHashSet getIntersection(TIntHashSet contextA, TIntHashSet contextB) {
TIntHashSet is = new TIntHashSet();
for (int a : contextA.toArray()) {
if (contextB.contains(a) || contextB.contains(DataAccess.expandTerm(a))) {
is.add(a);
}
}
return is;
}
private TIntHashSet getUnion(TIntHashSet contextA, TIntHashSet contextB) {
TIntHashSet union = new TIntHashSet();
for (int a : contextB.toArray()) {
union.add(a);
}
for (int a : contextA.toArray()) {
if (!union.contains(a) && !union.contains(DataAccess.expandTerm(a))) {
union.add(a);
}
}
return union;
}