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If You Can’t Beat Them Join Them: Handcrafted Features Complement Neural Nets for Non-Factoid Answer Reranking

Bogdanova, Dasha, Foster, Jennifer orcid logoORCID: 0000-0002-7789-4853, Dzendzik, Daria and Liu, Qun orcid logoORCID: 0000-0002-7000-1792 (2017) If You Can’t Beat Them Join Them: Handcrafted Features Complement Neural Nets for Non-Factoid Answer Reranking. In: 15th Conference of the European Chapter of the Association for Computational Linguistics:, Valencia, Spain.

Abstract
We show that a neural approach to the task of non-factoid answer reranking can benefit from the inclusion of tried-and-tested handcrafted features. We present a novel neural network architecture based on a combination of recurrent neural networks that are used to encode questions and answers, and a multilayer perceptron. We show how this approach can be combined with additional features, in particular, the discourse features presented by Jansen et al. (2014). Our neural approach achieves state-of-the-art performance on a public dataset from Yahoo! Answers and its performance is further improved by incorporating the discourse features. Additionally, we present a new dataset of Ask Ubuntu questions where the hybrid approach also achieves good results.
Metadata
Item Type:Conference or Workshop Item (Paper)
Event Type:Conference
Refereed:Yes
Subjects:Computer Science > Artificial intelligence
Computer Science > Computational linguistics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Computing
Research Institutes and Centres > ADAPT
Published in: Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics. 1. Association for Computational Linguistics.
Publisher:Association for Computational Linguistics
Official URL:https://aclanthology.org/E17-1000/
Copyright Information:Authors
Funders:Science Foundation Ireland
ID Code:30282
Deposited On:03 Sep 2024 08:43 by Jennifer Foster . Last Modified 03 Sep 2024 08:43
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