Macquarie University at BioASQ 6b: Deep learning and deep reinforcement learning for query-based summarisation

Diego Mollá


Abstract
This paper describes Macquarie University’s contribution to the BioASQ Challenge (BioASQ 6b, Phase B). We focused on the extraction of the ideal answers, and the task was approached as an instance of query-based multi-document summarisation. In particular, this paper focuses on the experiments related to the deep learning and reinforcement learning approaches used in the submitted runs. The best run used a deep learning model under a regression-based framework. The deep learning architecture used features derived from the output of LSTM chains on word embeddings, plus features based on similarity with the query, and sentence position. The reinforcement learning approach was a proof-of-concept prototype that trained a global policy using REINFORCE. The global policy was implemented as a neural network that used tf.idf features encoding the candidate sentence, question, and context.
Anthology ID:
W18-5303
Volume:
Proceedings of the 6th BioASQ Workshop A challenge on large-scale biomedical semantic indexing and question answering
Month:
November
Year:
2018
Address:
Brussels, Belgium
Editors:
Ioannis A. Kakadiaris, George Paliouras, Anastasia Krithara
Venue:
BioASQ
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
22–29
Language:
URL:
https://aclanthology.org/W18-5303
DOI:
10.18653/v1/W18-5303
Bibkey:
Cite (ACL):
Diego Mollá. 2018. Macquarie University at BioASQ 6b: Deep learning and deep reinforcement learning for query-based summarisation. In Proceedings of the 6th BioASQ Workshop A challenge on large-scale biomedical semantic indexing and question answering, pages 22–29, Brussels, Belgium. Association for Computational Linguistics.
Cite (Informal):
Macquarie University at BioASQ 6b: Deep learning and deep reinforcement learning for query-based summarisation (Mollá, BioASQ 2018)
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PDF:
https://aclanthology.org/W18-5303.pdf
Data
BioASQ