Cognitive Graph for Multi-Hop Reading Comprehension at Scale

Ming Ding, Chang Zhou, Qibin Chen, Hongxia Yang, Jie Tang


Abstract
We propose a new CogQA framework for multi-hop reading comprehension question answering in web-scale documents. Founded on the dual process theory in cognitive science, the framework gradually builds a cognitive graph in an iterative process by coordinating an implicit extraction module (System 1) and an explicit reasoning module (System 2). While giving accurate answers, our framework further provides explainable reasoning paths. Specifically, our implementation based on BERT and graph neural network efficiently handles millions of documents for multi-hop reasoning questions in the HotpotQA fullwiki dataset, achieving a winning joint F1 score of 34.9 on the leaderboard, compared to 23.1 of the best competitor.
Anthology ID:
P19-1259
Volume:
Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics
Month:
July
Year:
2019
Address:
Florence, Italy
Editors:
Anna Korhonen, David Traum, Lluís Màrquez
Venue:
ACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
2694–2703
Language:
URL:
https://aclanthology.org/P19-1259
DOI:
10.18653/v1/P19-1259
Bibkey:
Cite (ACL):
Ming Ding, Chang Zhou, Qibin Chen, Hongxia Yang, and Jie Tang. 2019. Cognitive Graph for Multi-Hop Reading Comprehension at Scale. In Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics, pages 2694–2703, Florence, Italy. Association for Computational Linguistics.
Cite (Informal):
Cognitive Graph for Multi-Hop Reading Comprehension at Scale (Ding et al., ACL 2019)
Copy Citation:
PDF:
https://aclanthology.org/P19-1259.pdf
Video:
 https://aclanthology.org/P19-1259.mp4
Code
 THUDM/CogQA +  additional community code
Data
HotpotQASQuAD