Representations for Question Answering from Documents with Tables and Text

Vicky Zayats, Kristina Toutanova, Mari Ostendorf


Abstract
Tables in web documents are pervasive and can be directly used to answer many of the queries searched on the web, motivating their integration in question answering. Very often information presented in tables is succinct and hard to interpret with standard language representations. On the other hand, tables often appear within textual context, such as an article describing the table. Using the information from an article as additional context can potentially enrich table representations. In this work we aim to improve question answering from tables by refining table representations based on information from surrounding text. We also present an effective method to combine text and table-based predictions for question answering from full documents, obtaining significant improvements on the Natural Questions dataset (Kwiatkowski et al., 2019).
Anthology ID:
2021.eacl-main.253
Volume:
Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume
Month:
April
Year:
2021
Address:
Online
Editors:
Paola Merlo, Jorg Tiedemann, Reut Tsarfaty
Venue:
EACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
2895–2906
Language:
URL:
https://aclanthology.org/2021.eacl-main.253
DOI:
10.18653/v1/2021.eacl-main.253
Bibkey:
Cite (ACL):
Vicky Zayats, Kristina Toutanova, and Mari Ostendorf. 2021. Representations for Question Answering from Documents with Tables and Text. In Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume, pages 2895–2906, Online. Association for Computational Linguistics.
Cite (Informal):
Representations for Question Answering from Documents with Tables and Text (Zayats et al., EACL 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.eacl-main.253.pdf
Data
Natural Questions