docs: private void statisticProb() {
  		System.out.println("统计概率");
  		TIntFloatIterator it = wordProb.iterator();
  		while(it.hasNext()){
  			it.advance();
  			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()){
  			it1.advance();
  			TIntFloatHashMap map = it1.value();
  			TIntFloatIterator it2 = map.iterator();
  			while(it2.hasNext()){
  				it2.advance();
  				it2.setValue(it2.value()/totalword);
  			}
  		}
  
  	}