Development of Character-like Chatbot with Role Play-Based Question Answering and a Large Language Model

Abstract

We developed a chatbot that imitates a specific person by combining a large amount of dialogue data of that person with a large language model. Furthermore, we investigated the current performance and problems of the chatbot by conducting an open experiment and error analysis of the chatbot. The experiment confirmed the high naturalness and characterness of the chatbot. In addition, our investigation revealed that the errors specific to a person can be divided into two types: errors in attributes and errors in relations, each of which can be divided into two levels: self and other.