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arxiv: 2102.09130 · v1 · pith:PCFIT7NMnew · submitted 2021-02-18 · 💻 cs.CL · cs.AI

Entity-level Factual Consistency of Abstractive Text Summarization

classification 💻 cs.CL cs.AI
keywords entityconsistencyfactualabstractivedocumententity-levelgeneratedhallucination
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A key challenge for abstractive summarization is ensuring factual consistency of the generated summary with respect to the original document. For example, state-of-the-art models trained on existing datasets exhibit entity hallucination, generating names of entities that are not present in the source document. We propose a set of new metrics to quantify the entity-level factual consistency of generated summaries and we show that the entity hallucination problem can be alleviated by simply filtering the training data. In addition, we propose a summary-worthy entity classification task to the training process as well as a joint entity and summary generation approach, which yield further improvements in entity level metrics.

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Cited by 3 Pith papers

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