ROUGE-N Score
- ROGUE = Recall-Oriented Understudy for Gisting Evaluation
 - As ROGUE compare with the ALL target sentences, it is often compared with Recall
 - ROGUE-N score is the sum of Recall of N-grams
 - Heavily used in Text Summarization, Also usually used in Machine Translation with BLEU Score
 
 ROGUE Score
Problems with ROGUE Score
- Doesn't consider semantic meaning
 - Hard to compare with different tokenizers
 - Doesn't consider synonyms