ResearchBenchmarksAbstractive Summarization on CNN/DailyMail (Linguistic Quality Metrics)Follow3.8Perplexity (Generated)LTS3.54045.29277.0458.7973Jun 3, 2025Evaluation ResultsMethodMethodLinksPerplexity (Generated)Perplexity (Input)MAUVEREPZipf ScoreDiversity ScoreLTSτ=0.2τ=0.22025.063.862.3372149197LTSτ=0.95τ=0.952025.063.8656.6796159297ASTS2025.068.9438.7499127897Reference2025.0610.2934.21—137697