DiverseDialogue: A Methodology for Designing Chatbots with Human-Like Diversity

• URL: http://arxiv.org/abs/2409.00262v1
• Date: Fri, 30 Aug 2024 21:33:58 GMT
• Title: DiverseDialogue: A Methodology for Designing Chatbots with Human-Like Diversity
• Authors: Xiaoyu Lin, Xinkai Yu, Ankit Aich, Salvatore Giorgi, Lyle Ungar,
• Abstract summary: We show that GPT-4o mini, when used as simulated human participants, systematically differ from those between actual humans across multiple linguistic features. We propose an approach that automatically generates prompts for user simulations by incorporating features derived from real human interactions. Our method of prompt optimization, tailored to target specific linguistic features, shows significant improvements.
• Score: 5.388338680646657
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Large Language Models (LLMs), which simulate human users, are frequently employed to evaluate chatbots in applications such as tutoring and customer service. Effective evaluation necessitates a high degree of human-like diversity within these simulations. In this paper, we demonstrate that conversations generated by GPT-4o mini, when used as simulated human participants, systematically differ from those between actual humans across multiple linguistic features. These features include topic variation, lexical attributes, and both the average behavior and diversity (variance) of the language used. To address these discrepancies, we propose an approach that automatically generates prompts for user simulations by incorporating features derived from real human interactions, such as age, gender, emotional tone, and the topics discussed. We assess our approach using differential language analysis combined with deep linguistic inquiry. Our method of prompt optimization, tailored to target specific linguistic features, shows significant improvements. Specifically, it enhances the human-likeness of LLM chatbot conversations, increasing their linguistic diversity. On average, we observe a 54 percent reduction in the error of average features between human and LLM-generated conversations. This method of constructing chatbot sets with human-like diversity holds great potential for enhancing the evaluation process of user-facing bots.

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