基于随机颜色Petri网的食物网能量流动建模与分析  

MODELING AND ANALYSIS FOR ENERGY FLOW IN FOOD WEB BASED ON STOCHASTIC COLORED PETRI NET

作　　者：管梦真 刘伟 李清 Guan Mengzhen;Liu Wei;Li Qing(College of Computer Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong,China)

机构地区：[1]山东科技大学计算机科学与工程学院,山东青岛266590

出　　处：《计算机应用与软件》2024年第2期25-32,共8页Computer Applications and Software

基　　金：山东省自然科学基金面上项目(ZR2020MF033);国家自然科学基金项目(61472228)。

摘　　要：为更好地描述能量流动问题,对生物变化做出及时的预测。以食物网中能量流动为例,提出一种随机颜色Petri网模型及可达性分析方法。在颜色Petri网的基础之上针对token引入随机函数和约束函数等属性用来描述token的传递特性;基于随机颜色Petri网提出可达图构造算法和随机概率矩阵;将随机颜色Petri网应用到食物网的能量流动过程中,对能量流动过程进行分析并对传递的物质进行分类,验证该模型的有效性。To better describe the problem of energy flow,make a timely prediction of biological changes,as a case study of energy flow in the food Web,a stochastic colored Petri nets model and accessibility analysis method are proposed.Based on the colored Petri net,some characteristics,such as stochastic function and constraint function,were introduced to describe the transfer characteristics of a token.Based on stochastic colored Petri nets,an algorithm for constructing reachable graphs and a stochastic probability matrix were proposed.The stochastic colored Petri nets were applied to the energy flow process of the food Web,and the energy flow process was analyzed and the substances transferred were classified.The validity of the model is verified.

关 键 词：随机颜色Petri网 随机函数 能量流动 约束函数 可达图 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]