How much should you ask? On the question structure in QA systems.

Barbara Rychalska, Dominika Basaj, Anna Wróblewska, Przemyslaw Biecek


Abstract
Datasets that boosted state-of-the-art solutions for Question Answering (QA) systems prove that it is possible to ask questions in natural language manner. However, users are still used to query-like systems where they type in keywords to search for answer. In this study we validate which parts of questions are essential for obtaining valid answer. In order to conclude that, we take advantage of LIME - a framework that explains prediction by local approximation. We find that grammar and natural language is disregarded by QA. State-of-the-art model can answer properly even if ’asked’ only with a few words with high coefficients calculated with LIME. According to our knowledge, it is the first time that QA model is being explained by LIME.
Anthology ID:
W18-5435
Volume:
Proceedings of the 2018 EMNLP Workshop BlackboxNLP: Analyzing and Interpreting Neural Networks for NLP
Month:
November
Year:
2018
Address:
Brussels, Belgium
Editors:
Tal Linzen, Grzegorz Chrupała, Afra Alishahi
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
319–321
Language:
URL:
https://aclanthology.org/W18-5435
DOI:
10.18653/v1/W18-5435
Bibkey:
Cite (ACL):
Barbara Rychalska, Dominika Basaj, Anna Wróblewska, and Przemyslaw Biecek. 2018. How much should you ask? On the question structure in QA systems.. In Proceedings of the 2018 EMNLP Workshop BlackboxNLP: Analyzing and Interpreting Neural Networks for NLP, pages 319–321, Brussels, Belgium. Association for Computational Linguistics.
Cite (Informal):
How much should you ask? On the question structure in QA systems. (Rychalska et al., EMNLP 2018)
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PDF:
https://aclanthology.org/W18-5435.pdf