A Modeling Method of Space-based Information System Task-flow Based on Scenario

被引：0
|
作者：
Qiu Di-shan [1 ]
Tan Qun [1 ]
Peng Li [1 ]
Li Zhi-meng [1 ]
机构：
[1] Natl Univ Def Technol, Natl Key Lab Informat Syst Engn, Changsha 410073, Hunan, Peoples R China
来源：
2010 INTERNATIONAL COLLOQUIUM ON COMPUTING, COMMUNICATION, CONTROL, AND MANAGEMENT (CCCM2010), VOL II | 2010年
关键词：
task analysis; task-flow; dynamic requirements; space-based information system (SBIS); nonhomogeneous Poisson process (NHPP);
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
Space-based information system (SBIS) task requirements can be researched from the perspectives of type, quality, quantity, etc. This paper focuses on quantity and aims at describing dynamic task requirements of SBIS through task-flow model. That the arrival process of SBIS tasks is a complex nonparametric nonhomogeneous Poisson process (NHPP) is proved. There is no task data which can be used directly, task analyze method based on scenario is advanced to produce task data. Because of tasks' varieties and complex properties, concept and calculation method of task expectation function are presented. Because the task requirements quantity is difficult to measure and may vary widely in different scenarios or different time, concept and calculation method of task-flow intensity function are put forward. Finally, the task flow model is available, it can formally describe the dynamic task requirements of SBIS. Experiments has been done to validated the validity and practicability of task-flow modeling method.
引用
收藏
页码：712 / 717
页数：6
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