ROUGE (metric) - Metrics

Metrics

The following five evaluation metrics are available.

• ROUGE-N: N-gram based co-occurrence statistics.
• ROUGE-L: Longest Common Subsequence (LCS) based statistics. Longest common subsequence problem takes into account sentence level structure similarity naturally and identifies longest co-occurring in sequence n-grams automatically.
• ROUGE-W: Weighted LCS-based statistics that favors consecutive LCSes .
• ROUGE-S: Skip-bigram based co-occurrence statistics. Skip-bigram is any pair of words in their sentence order.
• ROUGE-SU: Skip-bigram plus unigram-based co-occurrence statistics.

ROUGE can be downloaded from berouge download link.