一个基于TWF-net的扩展时间工作流模型及其应用

An Extended Time Workflow Model Based on TWF-net and Its Application

时间约束是分布式企业工作流程建模中的一个重要因素 基于时间Petri网工作流模型 (TWF net) ,通过分析TWF net模型不足之处 ,建立了一种新的时间Petri网工作流模型———扩展时间Petri网工作流模型 (XTWF net) 通过构建规则 ,可将多个TWF net合并为一个XTWF net,以描述并行流程中的时间约束 ;通过引入与时区相关的时间映射函数 ,XTWF net可以描述分布于不同时区的流程 最后给出一个利用XTWF

Timing constraint is a key factor in workflow model for distributed enterprises Based on TWF net,a new time workflow model,extended time workflow net(XTWF net ),is proposed It aims to get over the deficiencies of time workflow net(TWF net) in modeling timing constraints for distributed enterprises By building rules,several TWF nets can form an XTWF net to characterize the timing constraint of parallel workflows;By introducing time mapping function with relation to time zones, XTWF net can characterize workflows distributed in multi time zones And finally presented is a case study using the XTWF net model