Rethinking the objectives of extractive question answering

28 Aug 2020 Martin Fajcik Josef Jon Santosh Kesiraju Pavel Smrz

This paper describes two generally applicable approaches towards the significant improvement of the performance of state-of-the-art extractive question answering (EQA) systems. Firstly, contrary to a common belief, it demonstrates that using the objective with independence assumption for span probability $P(a_s,a_e) = P(a_s)P(a_e)$ of span starting at position $a_s$ and ending at position $a_e$ may have adverse effects... (read more)

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