Evaluating Abstractive Summarization (Chunk 3)
The table shows the ROUGE scores for evaluating two different summaries against a reference text. In the case of rouge-1, Summary 2 outperforms Summary 1, indicating a better overlap of individual words and for rouge-l, Summary 2 has a higher score, implying a closer match in the longest common subsequences, and thus a potentially better overall summarization in capturing the main content and order of the original text. Since Summary 2 has many words and short phrases directly lifted from the excerpt, its overlap with the reference summary would likely be higher, leading to higher ROUGE scores.