A methodology for turn-taking capabilities enhancement in Spoken Dialogue Systems using Reinforcement Learning

Autor: Romain Laroche, Fabrice Lefèvre, Hatim Khouzaimi
Rok vydání: 2018
Předmět:
Zdroj: Computer Speech & Language. 47:93-111
ISSN: 0885-2308
DOI: 10.1016/j.csl.2017.07.006
Popis: This article introduces a new methodology to enhance an existing traditional Spoken Dialogue System (SDS) with optimal turn-taking capabilities in order to increase dialogue efficiency. A new approach for transforming the traditional dialogue architecture into an incremental one at a low cost is presented: a new turn-taking decision module called the Scheduler is inserted between the Client and the Service. It is responsible for handling turn-taking decisions. Then, a User Simulator which is able to interact with the system using this new architecture has been implemented and used to train a new Reinforcement Learning turn-taking strategy. Compared to a non-incremental and a handcrafted incremental baselines, it is shown to perform better in simulation and in a real live experiment.
Databáze: OpenAIRE