Effective shared representations with Multitask Learning for Community Question Answering

Daniele Bonadiman, Antonio Uva, Alessandro Moschitti


Abstract
An important asset of using Deep Neural Networks (DNNs) for text applications is their ability to automatically engineering features. Unfortunately, DNNs usually require a lot of training data, especially for highly semantic tasks such as community Question Answering (cQA). In this paper, we tackle the problem of data scarcity by learning the target DNN together with two auxiliary tasks in a multitask learning setting. We exploit the strong semantic connection between selection of comments relevant to (i) new questions and (ii) forum questions. This enables a global representation for comments, new and previous questions. The experiments of our model on a SemEval challenge dataset for cQA show a 20% of relative improvement over standard DNNs.
Anthology ID:
E17-2115
Volume:
Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 2, Short Papers
Month:
April
Year:
2017
Address:
Valencia, Spain
Editors:
Mirella Lapata, Phil Blunsom, Alexander Koller
Venue:
EACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
726–732
Language:
URL:
https://aclanthology.org/E17-2115
DOI:
Bibkey:
Cite (ACL):
Daniele Bonadiman, Antonio Uva, and Alessandro Moschitti. 2017. Effective shared representations with Multitask Learning for Community Question Answering. In Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 2, Short Papers, pages 726–732, Valencia, Spain. Association for Computational Linguistics.
Cite (Informal):
Effective shared representations with Multitask Learning for Community Question Answering (Bonadiman et al., EACL 2017)
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PDF:
https://aclanthology.org/E17-2115.pdf