Augmenting Pre-trained Language Models with QA-Memory for Open-Domain Question Answering

  title={Augmenting Pre-trained Language Models with QA-Memory for Open-Domain Question Answering},
  author={Wenhu Chen and Pat Verga and Michiel de Jong and John Wieting and William Cohen},
Existing state-of-the-art methods for open-domain question-answering (ODQA) gener-ally used a open book approach, in which information is retrieved from a large text corpus or knowledge base (KB), and then rea-soned with to produce an answer. A recent alternative is to retrieve from a collection of previously-generated question-answer pairs. This has several practical advantages, including being more memory- and compute-efficient. Question-answer pairs are also appealing in that they seem to be… 

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