This paper introduces a generic agent-basedmodel simulating the exchange and the di usion of pro andconarguments. It is applied to the caseof thedi usionof vegetariandiets in the context of apotential emergence of a second nutrition transition. To this day, agent-based simulation has been extensively used to study opinion dynamics. However, the vast majority of existing models have been limited to extremely abstract and simplified representations of the di usion process. These simplifications impairs the realismof the simulations and disables the understanding of the reasons for the shi of an actor’s opinion. The generic model presented here explicitly represents exchanges of arguments between actors in the context of an opinion dynamicmodel. In particular, the inner attitude towards an opinion of each agent is formalized as an argumentation graph and each agent can share arguments with other agents. Simulation experiments show that introducing attacks between arguments and a limitation of the number of arguments mobilized by agents has a strong impact on the evolution of the agents’ opinion. We also highlight that when a new argument is introduced into the system, the quantity and the profile of the agents receiving the new argument will impact the evolution of the overall opinion. Finally, the application of thismodel to vegetarian diet adoption seems consistent with historical food behaviour dynamics observed during crises.

中文翻译：

---

在基于代理的模型中引入论证框架以更好地模拟代理在意见动态中的认知：在素食饮食扩散中的应用

本文介绍了一种基于代理的通用模型，用于模拟赞成和反对的交换和扩散。它适用于在可能出现第二次营养转变的背景下素食饮食的情况。迄今为止，基于代理的模拟已被广泛用于研究意见动态。然而，绝大多数现有模型都仅限于对扩散过程进行极其抽象和简化的表示。这些简化削弱了模拟的真实性，并且使人们无法理解演员意见时的原因。这里提出的通用模型明确表示在意见动态模型的上下文中参与者之间的论点交换。尤其是，对每个代理的意见的内在态度被形式化为一个论证图，每个代理可以与其他代理共享论点。模拟实验表明，在论点之间引入攻击和限制代理动员的论点数量对代理意见的演变有很大的影响。我们还强调，当一个新的论点被引入系统时，接受新论点的代理的数量和概况将影响整体意见的演变。最后，将该模型应用于素食采用似乎与危机期间观察到的历史食物行为动态一致。模拟实验表明，在论点之间引入攻击和限制代理动员的论点数量对代理意见的演变有很大的影响。我们还强调，当一个新的论点被引入系统时，接受新论点的代理的数量和概况将影响整体意见的演变。最后，将该模型应用于素食采用似乎与危机期间观察到的历史食物行为动态一致。模拟实验表明，在论点之间引入攻击和限制代理动员的论点数量对代理意见的演变有很大的影响。我们还强调，当一个新的论点被引入系统时，接受新论点的代理的数量和概况将影响整体意见的演变。最后，将该模型应用于素食采用似乎与危机期间观察到的历史食物行为动态一致。