摘要
交通信息系统 (TIS)是目前世界各国交通运输领域竞相研究和开发的热点 .它是一种复杂的服务性系统 ,具有典型的业务过程特点 ,但目前用工作流来分析交通信息系统的研究尚不多见 ,更很少有人对该系统中的一些实时性服务进行时序分析 ,提出优化方案 .该文将广义随机Petri网与工作流相结合 ,首先为TIS建立符合工作流概念的广义随机Petri网模型 .然后根据实际系统中相关数据的统计分析和经验估计 ,利用基于行为表达式的分析方法对点播服务的时间性质进行分析 ,获得了一些有价值的性能指标信息 .
At present Transportation Information System (TIS) is a hot spot in transportation research field. TIS is a complex service system with typical business process characteristics. However, there is little research work made on TIS with workflow principle. Still less some achievement in analyzing the time feature of the real-time service. In this paper, two modeling methods-GSPN and workflow are combined to model TIS. First, a GSPN-workflow model of TIS is set. According to the data got, certain parameters are assigned to each transition in the model. Then the time feature of order program service is analyzed with a performance analysis method, behavior expression based method. Finally, some informations, such as the total order program service time, various computing time of various model and so on, are got. This information is valuable to help us optimize the whole order program service.
出处
《计算机学报》
EI
CSCD
北大核心
2005年第1期81-87,共7页
Chinese Journal of Computers
基金
国家自然科学基金 (60 12 5 2 0 5
90 412 0 13 )
国家"九七三"重点基础研究发展规划项目基金 (2 0 0 3CB3 1690 2 )
国家"八六三"高技术研究发展计划 (2 0 0 4AA0 14 3 40 )
上海市重大计划项目基金
上海重点计划项目基金
上海高校网格技术E-研究院基金
