Faithful Persona-based Conversational Dataset Generation with Large
  Language Models
Pegah Jandaghi XiangHai Sheng Xinyi Bai Jay Pujara Hakim Sidahmed
High-quality conversational datasets are essential for developing AI models
that can communicate with users. One way to foster deeper interactions between
a chatbot and its user is through personas, aspects of the user's character
that provide insights into their personality, motivations, and behaviors.
Training Natural Language Processing (NLP) models on a diverse and
comprehensive persona-based dataset can lead to conversational models that
create a deeper connection with the user, and maintain their engagement. In
this paper, we leverage the power of Large Language Models (LLMs) to create a
large, high-quality conversational dataset from a seed dataset. We propose a
Generator-Critic architecture framework to expand the initial dataset, while
improving the quality of its conversations. The Generator is an LLM prompted to
output conversations. The Critic consists of a mixture of expert LLMs that
control the quality of the generated conversations. These experts select the
best generated conversations, which we then use to improve the Generator. We
release Synthetic-Persona-Chat, consisting of 20k conversations seeded from
Persona-Chat. We evaluate the quality of Synthetic-Persona-Chat and our
generation framework on different dimensions through extensive experiments, and
observe that the losing rate of Synthetic-Persona-Chat against Persona-Chat
during Turing test decreases from 17.2% to 8.8% over three iterations.