float v = it.value()/totalword;
it.setValue(v);
int key = it.key();
if(key<0)
continue;
Cluster cluster = new Cluster(key,v,alpahbet.lookupString(key));
clusters.put(key, cluster);
}
TIntObjectIterator<TIntFloatHashMap> it1 = pcc.iterator();
while(it1.hasNext()){