private void convertFrequencies() {
		for (Entry<Double, Long> ent : frequencies.entrySet()) {
			if (freq_s.containsKey(ent.getValue())) {
			 freq_s.put(ent.getValue(), freq_s.get(ent.getValue())+ent.getKey());
			}else{

				 freq_s.put(ent.getValue(),ent.getKey());
			}
		}
	}