为建立能够描述外部环境、业务操作耗时服从一般分布的业务过程性能模型,引入扩展广义随机Petri网。用容纳有无穷多托肯的输入库所描述建模对象外部环境,用闸门变迁控制外部环境对建模对象的输入,为非立即变迁绑定一个任意分布时间延迟随机变量。最后给出一个建模实例。
A new version of Petri nets named extended generalized stochastic Petri net (EGSPN) is introduced for modeling and analyzing enterprise surroundings and business processes. In an EGSPN,input places which contain infinite tokens are introduced for modeling the sur- roundings inputs, gate transitions for controlling the inputs. Both gate transition and timed transition are associated with an arbitrarily-distributed random variable of time delay. Finally, an instance of business processes is modeled with EGSPN.