Tell Me Why: Using Question Answering as Distant Supervision for Answer Justification

@inproceedings{Sharp2017TellMW,
  title={Tell Me Why: Using Question Answering as Distant Supervision for Answer Justification},
  author={Rebecca Sharp and Mihai Surdeanu and Paul Edward Jansen and Marco Antonio Valenzuela-Escarcega and Peter Clark and Magdel Hammond},
  booktitle={CoNLL},
  year={2017}
}
For many applications of question answering (QA), being able to explain why a given model chose an answer is critical. However, the lack of labeled data for answer justifications makes learning this difficult and expensive. Here we propose an approach that uses answer ranking as distant supervision for learning how to select informative justifications, where justifications serve as inferential connections between the question and the correct answer while often containing little lexical overlap… CONTINUE READING

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