A Basic Study on Generating Back-Channel Humor Phrases for Chat Dialogue Systems

Research on automatic dialogue systems (chat dialogue systems) has attracted attention, in recent years. Dialogue systems are classified into task-oriented and non-task-oriented ones. In non-task-oriented dialogue systems, it is important that users are willing to continue dialogue over a long period. Conventional studies report that utterances, including humor and back-channel feedback, are effective in improving dialog continuity. This study investigates the generation of back-channel humor phrases for chat dialogue systems.