Propagate-Selector: Detecting Supporting Sentences for Question Answering via Graph Neural Networks

Seunghyun Yoon, Franck Dernoncourt, Doo Soon Kim, Trung Bui, Kyomin Jung


Abstract
In this study, we propose a novel graph neural network called propagate-selector (PS), which propagates information over sentences to understand information that cannot be inferred when considering sentences in isolation. First, we design a graph structure in which each node represents an individual sentence, and some pairs of nodes are selectively connected based on the text structure. Then, we develop an iterative attentive aggregation and a skip-combine method in which a node interacts with its neighborhood nodes to accumulate the necessary information. To evaluate the performance of the proposed approaches, we conduct experiments with the standard HotpotQA dataset. The empirical results demonstrate the superiority of our proposed approach, which obtains the best performances, compared to the widely used answer-selection models that do not consider the intersentential relationship.
Anthology ID:
2020.lrec-1.664
Volume:
Proceedings of the Twelfth Language Resources and Evaluation Conference
Month:
May
Year:
2020
Address:
Marseille, France
Editors:
Nicoletta Calzolari, Frédéric Béchet, Philippe Blache, Khalid Choukri, Christopher Cieri, Thierry Declerck, Sara Goggi, Hitoshi Isahara, Bente Maegaard, Joseph Mariani, Hélène Mazo, Asuncion Moreno, Jan Odijk, Stelios Piperidis
Venue:
LREC
SIG:
Publisher:
European Language Resources Association
Note:
Pages:
5400–5407
Language:
English
URL:
https://aclanthology.org/2020.lrec-1.664
DOI:
Bibkey:
Cite (ACL):
Seunghyun Yoon, Franck Dernoncourt, Doo Soon Kim, Trung Bui, and Kyomin Jung. 2020. Propagate-Selector: Detecting Supporting Sentences for Question Answering via Graph Neural Networks. In Proceedings of the Twelfth Language Resources and Evaluation Conference, pages 5400–5407, Marseille, France. European Language Resources Association.
Cite (Informal):
Propagate-Selector: Detecting Supporting Sentences for Question Answering via Graph Neural Networks (Yoon et al., LREC 2020)
Copy Citation:
PDF:
https://aclanthology.org/2020.lrec-1.664.pdf
Code
 david-yoon/propagate-selector
Data
HotpotQA