docs: public LinkedPredict<T> mergeDuplicate(boolean useScore) {
  		LinkedPredict<T> pred = new LinkedPredict<T>();
  		for(int i = 0; i < labels.size(); i++){
  			T l = labels.get(i);
  			float score;
  			if(useScore)
  				score = scores.get(i);
  			else 
  				score=1;
  			pred.addoradjust(l, score);
  		}
  		return pred;
  	}