public int compare(Object arg1, Object arg2) {
		if (!map.containsKey(arg1) || !map.containsKey(arg2)) { return 0; }

		Comparable value1 = (Comparable) map.get(arg1);
		Comparable value2 = (Comparable) map.get(arg2);
		return -value1.compareTo(value2); // Note: We use a minus because we want decreasing order (high values first)
	}