On Faithfulness and Factuality in Abstractive Summarization

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Knowledge Triples

Source Entity	Relationship	Target Entity
Abstractive Document Summarization Task	creates	Hallucinated Content OtherEntity
Approximate Decoding Method	usedFor	Neural Text Generation Method
Likelihood Training Method	usedFor	Neural Text Generation Method
Neural Text Generation Method	includes	Abstractive Document Summarization Task
Pre Trained Models Method	improves	Abstractive Document Summarization Task
ROUGE Metric Metric	evaluates	Abstractive Document Summarization Task
Textual Entailment Method	correlatesWith	Abstractive Document Summarization Task