Reference-free Summarization Evaluation via Semantic Correlation and Compression Ratio

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Knowledge Triples

Source Entity	Relationship	Target Entity
Automatic Reference-free Evaluation Metric	considers	Summary Compression Ratio OtherEntity
Automatic Reference-free Evaluation Metric	uses	Pre-trained Language Models Method
Summarization Task	evaluatedBy	Automatic Reference-free Evaluation Metric
Summarization Task	evaluatedBy	Reference Based Evaluation Method