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Improving response selection in multi-turn dialogue systems by incorporating domain knowledge

: Chaudhuri, D.; Kristiadi, A.; Lehmann, J.; Fischer, A.

Korhonen, A. ; Association for Computational Linguistics -ACL-:
The 22nd Conference on Computational Natural Language Learning 2018. Proceedings of the conference : October 31-November 1, 2018, Brussels, Belgium : CoNLL 2018
Stroudsburg, PA: ACL, 2018
ISBN: 978-1-948087-72-8
Conference on Computational Natural Language Learning (CoNLL) <22, 2018, Brüssel>
Fraunhofer IAIS ()

Building systems that can communicate with humans is a core problem in Artificial Intelligence. This work proposes a novel neural network architecture for response selection in an end-to-end multi-turn conversational dialogue setting. The architecture applies context level attention and incorporates additional external knowledge provided by descriptions of domain-specific words. It uses a bi-directional Gated Recurrent Unit (GRU) for encoding context and responses and learns to attend over the context words given the latent response representation and vice versa. In addition, it incorporates external domain specific information using another GRU for encoding the domain keyword descriptions. This allows better representation of domain-specific keywords in responses and hence improves the overall performance. Experimental results show that our model outperforms all other state-of-the-art methods for response selection in multi-turn conversations. © 2018 Association for Computational Linguistics.