text.setTitle("hello world");
IRougeSummaryModel gs = new RougeSummaryModel(null);
gs.setTitle("nothing of the above");
Set<IRougeSummaryModel> s = new HashSet<IRougeSummaryModel>();
s.add(gs);
rouge = new RougeN(text, s, Integer.MAX_VALUE, Integer.MAX_VALUE, 2, 'A', 0.5);
Map<ScoreType, Double> results = rouge.computeNGramScore();
assertEquals(0, results.get(ScoreType.R), Math.pow(10, -5));
assertEquals(0, results.get(ScoreType.P), Math.pow(10, -5));