电子商务大系统的资源与性能自适应协调控制研究

电子商务系统属于复杂大系统,其资源与性能子系统具有双向制约的特点,因而,系统资源与性能的协调控制是提高整体QoS水平的重要前提.重点对电子商务系统资源与性能的协调控制问题进行了探讨,将基于动态大系统辨识的自适应协调控制方法推广到该领域.首先根据大系统理论的多级递阶控制的基本思想给出了电子商务系统多级双向控制模型体系的基本结构,分析了资源与性能子系统的影响因素,并在些基础上确定并简化了资源与性能大系统模型结构,探讨了基于该模型进行自适应协调控制的基本思想与方法.

Adaptive coordination control for resource and performance of electronic business large-scale system

Electronic business system is a kind of complex large-scale system which resource and performance sub-systems are restricted by each other. As a consequence the coordination control for these two sub-systems is a key aspect in the improvement of Web QoS. The main problem discussed is to the coordination control for resource and performance sub-systems of electronic business. An adaptive coordination control technique based on the theory of large-scale system is developed. Firstly, a framework of multilevel hierarchical control model of electronic business system is proposed. Further, the main components are analyzed, which affect the system resource and performance. And also, the integrated model of resource and performance is offered and optimized. Finally, the mechanism and method used to realize the adaptive coordination control are developed according to the parameter identification theory of dynamic large-scale system.