MAFiD: Moving Average Equipped Fusion-in-Decoder for Question Answering over Tabular and Textual Data

Sung-Min Lee, Eunhwan Park, Daeryong Seo, Donghyeon Jeon, Inho Kang, Seung-Hoon Na


Abstract
Transformer-based models for question answering (QA) over tables and texts confront a “long” hybrid sequence over tabular and textual elements, causing long-range reasoning problems. To handle long-range reasoning, we extensively employ a fusion-in-decoder (FiD) and exponential moving average (EMA), proposing a Moving Average Equipped Fusion-in-Decoder (MAFiD). With FiD as the backbone architecture, MAFiD combines various levels of reasoning: independent encoding of homogeneous data and single-row and multi-row heterogeneous reasoning, using a gated cross attention layer to effectively aggregate the three types of representations resulting from various reasonings. Experimental results on HybridQA indicate that MAFiD achieves state-of-the-art performance by increasing exact matching (EM) and F1 by 1.1 and 1.7, respectively, on the blind test set.
Anthology ID:
2023.findings-eacl.177
Volume:
Findings of the Association for Computational Linguistics: EACL 2023
Month:
May
Year:
2023
Address:
Dubrovnik, Croatia
Editors:
Andreas Vlachos, Isabelle Augenstein
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
2337–2344
Language:
URL:
https://aclanthology.org/2023.findings-eacl.177
DOI:
10.18653/v1/2023.findings-eacl.177
Bibkey:
Cite (ACL):
Sung-Min Lee, Eunhwan Park, Daeryong Seo, Donghyeon Jeon, Inho Kang, and Seung-Hoon Na. 2023. MAFiD: Moving Average Equipped Fusion-in-Decoder for Question Answering over Tabular and Textual Data. In Findings of the Association for Computational Linguistics: EACL 2023, pages 2337–2344, Dubrovnik, Croatia. Association for Computational Linguistics.
Cite (Informal):
MAFiD: Moving Average Equipped Fusion-in-Decoder for Question Answering over Tabular and Textual Data (Lee et al., Findings 2023)
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PDF:
https://aclanthology.org/2023.findings-eacl.177.pdf
Video:
 https://aclanthology.org/2023.findings-eacl.177.mp4