【摘要】 针对现有的分布式逻辑语言缺乏完整时态表达力等问题,将分布式时态逻辑谓词引入Datalog规则,提出TU-Datalog语言。该语言通过融入U-Datalog的非即时性更新语义,形成完全声明式具有强大时态表达力的逻辑编程语言和环境。通过扩展U-Datalog逻辑固定点语义,提出TU-Datalog语言的固定点时态演化规则,并对该语言的语法、语义、评价算法进行了研究,最后对该语言的应用做了说明和示例。更多还原

【Abstract】 Focused on the problem that current distributed logic languages are short of temporal expressiveness, the paper presents TU-Datalog language by incorporating distributed temporal logic into Datalog rules, which makes the language a pure declarative logic programming language and environment with powerful temporal expressiveness based on nonimmediate update semantics of U-Datalog. The paper illuminates the temporal evolved rules of fixpoint of the language by extending the fixpoint language of U-Datalog. The syntax, semantics and evaluation algorithms of the language are explained. And the application of the language is discussed and exampled.更多还原