public Map<String,Map<String,Flt>> retrieveTerms(int docNum) throws IOException {
  return retrieveTerms(docNum,null);
}

public Map < String , Map < String , Flt > > retrieveTerms ( int docNum ) throws IOException { return retrieveTerms ( docNum , null ) ; }
find words for a more - queryfromdocuments - this query former .
