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  RAG + DPR model performance issues
  
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  Hi.
  I am trying to reproduce the results obtained in the Retriever Augmented Generation paper for Question Answering on the Natural Questions (NQ) Dataset (Exact Match accuracy 44%).
  However, I am not able to reproduce them.
  
  Can someone kindly let me know which DPR model, DPR dataset and RAG dataset was used to obtain the 44% EM Accuracy on NQ dataset?
  
  Thanks.