Hierarchical Structure of Dialogue Management for Multi Target-Guided Dialogue

Abstract

In a dialogue system, when there is a dialogue goal for the dialogue system that is independent of the user's dialogue goal, a dialogue that tries to reach a topic for that goal while coming to terms with the user (i.e., target-guided dialogue) has the potential to be useful for applications such as advertising and recommendation. However, in the case of multiple target-guided strategies, the complexity and multiplicity of designs for switching between target-guided strategies is a challenge. In this paper, we propose the hierarchical structure for dialogue management method, which alleviates the complexity and multiplicity of designing such target-guided strategy switching. It is found that the proposed method automatically complements the topic transitions of skipping, modifying, and sliding, and enhances naturalness of transitions and interest in guided topics.