Emotional Speech Corpus for Persuasive Dialogue System
Expressing emotion is known as an efficient way to persuade one{'}s dialogue partner to accept one{'}s claim or proposal. Emotional expression in speech can express the speaker{'}s emotion more directly than using only emotion expression in the text, which will lead to a more persuasive dialogue. In this paper, we built a speech dialogue corpus in a persuasive scenario that uses emotional expressions to build a persuasive dialogue system with emotional expressions. We extended an existing text dialogue corpus by adding variations of emotional responses to cover different combinations of broad dialogue context and a variety of emotional states by crowd-sourcing. Then, we recorded emotional speech consisting of of collected emotional expressions spoken by a voice actor. The experimental results indicate that the collected emotional expressions with their speeches have higher emotional expressiveness for expressing the system{'}s emotion to users.
PDF Abstract