Textual entailment as an evaluation metric for abstractive text summarization

Swagat Shubham Bhuyan, Saranga Kingkor Mahanta, Partha Pakray, Benoit Favre

September 2023

We propose textual entailment as a potential metric to evaluate abstractive summaries. The results show the contribution of text entailment as a strong automated evaluation model for such summaries. The textual entailment scores between the text and generated summaries, and between the reference and predicted summaries were calculated, and an overall summarizer score was generated to give a fair idea of how efficient the generated summaries are. We put forward some novel methods that use the entailment scores and the final summarizer scores for a reasonable evaluation of the same across various scenarios. A Final Entailment Metric Score (FEMS) was generated to get an insightful idea in order to compare both the generated summaries.

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