Frustratingly Easy Natural Question Answering
Table 2: Performance on NQ dev using a preliminary BERTBASE-for-QA model with varying sub-sampling
['Neg Sampling Rate for Answerable', 'Neg Sampling Rate for Un-Answerable', 'SA F1']
Performance can be improved further by sampling at a slightly lower rate of 1% for answerable questions and at higher rate of 4% for un-answerable questions.