Human-like Agents with diverse and dynamic personalities could serve as an essential design probe in the process of user-centered design, thereby enabling designers to enhance the user experience of interactive applications. In this article, we introduce Evolving Agents, a novel agent architecture that consists of two systems: Personality and Behavior. The Personality system includes Cognition, Emotion, and Character Growth modules. The Behavior system comprises two modules: Planning and Action. We also build a simulation platform that enables agents to interact with the environment and other agents. Evolving Agents can simulate the human personality evolution process. Compared to its initial state, agents' personality and behavior patterns undergo believable development after several days of simulation. Agents reflect on their behavior to reason and develop new personality traits. These traits, in turn, generate new behavior patterns, forming a feedback loop-like personality evolution. Our experiment utilized a simulation platform with ten agents for evaluation. During the assessment, these agents experienced believable and inspirational personality evolution. Through ablation and control experiments, we demonstrated the effectiveness of agent personality evolution, and all of our agent architecture modules contribute to creating believable human-like agents with diverse and dynamic personalities. We also demonstrated through workshops how Evolving Agents could inspire designers.

翻译：具有多样化和动态人格的类人智能体可作为以用户为中心设计过程中的关键设计探针，从而帮助设计师提升交互应用程序的用户体验。本文提出演化智能体——一种由人格系统与行为系统构成的新型智能体架构。人格系统包含认知、情绪与性格成长模块；行为系统则包含规划与行动模块。我们同时构建了支持智能体与环境及其他智能体交互的仿真平台。演化智能体能够模拟人类人格演化过程：经过数日仿真后，智能体的人格与行为模式相较于初始状态会发生可信的演进。智能体通过行为反思来推理并发展新的人格特质，这些特质进而催生新的行为模式，形成类似反馈循环的人格演化机制。实验采用包含十个智能体的仿真平台进行评估，这些智能体在评估过程中展现出可信且具启发性的人格演化。通过消融实验与对照实验，我们验证了智能体人格演化的有效性，且架构所有模块均对构建具有动态多样性人格的逼真类人智能体具有贡献。我们亦通过工作坊展示了演化智能体如何为设计师提供设计灵感。