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提出了一种基于复杂行为的语言模型对虚拟环境尤其是实体行为进行建模，该模型提供较强的定义行为关系及其时间约束的能力。利用自行研制的分布式虚拟环境软件开发平台ＹＨＶＲＰ的建模语言ＹＨＶＭＬ实现了该模型，同时ＹＨＶＭＬ语言的运行环境实现了面向复杂行为的虚拟环境计算模型，并利用ＬＩＦ策略对实体行为进行动态调度，以保障面向复杂行为的虚拟环境应用的实时交互性和真实感。
A language model based on complex behaviors is proposed to model the virtual environment, especially the entity behavior. The model provides a strong ability to define the behavior relationship and its time constraints. The YHVML modeling language YHVML, which is a distributed virtual environment software development platform developed by ourselves, is used to implement this model. At the same time, the YHVML language runtime environment implements a virtual environment computing model for complex behaviors. The LIF strategy is used to dynamically schedule entity behaviors, In order to protect real-time interactivity and realism of virtual environment applications facing complex behaviors.