一种基于不确定Petri网的推理算法  

A Reasoning Algorithm Based on Uncertain Petri Net

作　　者：申鑫 李孝忠[1] SHEN Xin;LI Xiaozhong(College of Artificial Intelligence,Tianjin University of Science&Technology,Tianjin 300457,China)

机构地区：[1]天津科技大学人工智能学院,天津300457

出　　处：《天津科技大学学报》2021年第2期62-67,共6页Journal of Tianjin University of Science & Technology

基　　金：天津市自然科学基金资助项目(18JCQNJC69500)。

摘　　要：传统的Petri网运用确定的信息进行推理,而现实生活中存在大量不精确的、不确定的信息.在采用模糊Petri网模型解决此类问题时,可能会使一个能够发生的命题被判断成不会发生,从而出现错误的结果.不确定理论是解决主观不确定性问题的数学工具.本文结合不确定理论与Petri网,提出不确定Petri网模型,用于表示不确定产生式规则系统.在此模型上,提出了一种不确定推理算法,并给出实例进行说明.Traditional Petri nets use certain information for reasoning,but there are lots of inaccurate and uncertain information in real life.Using the fuzzy Petri net model to solve such problems may cause the possibility proposition to be judged as impossible.Accordingly,wrong results may appear.Uncertainty theory is a mathematical tool to solve the subjective uncertainty problem.Combining uncertainty theory with Petri net,this article proposes an uncertain Petri net model to represent an uncertain production rule system.Based on this model an uncertain reasoning algorithm is developed with some examples for illustration.

关 键 词：PETRI网 知识表示与推理 不确定Petri网 不确定产生式 不确定推理算法 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]