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如何根据用户的性能要求来进行系统设计、确定信息系统总体性能参数并保证系统动态性能需求是信息系统建设过程中必须解决的问题,而在传统的信息系统开发方法中并没有提供有效的定量化方法来解决这个问题。该文针对这个问题,提出了在对信息系统进行建模仿真的基础上利用BP网络来确定信息系统总体性能参数的方法,利用BP所固有的对非线性映射逼近的特点以一种定量化的方法来确定系统总体性能参数。同时,对BP网络的输入输出参数进行了讨论和定义,并通过一个实例证明了该方法的实用性。
How to design the system according to the user’s performance requirements, determine the overall performance parameters of the information system and ensure the dynamic performance of the system are the problems that must be solved in the construction of the information system. However, the traditional information system development methods do not provide effective quantification Method to solve this problem. In this paper, aiming at this problem, a method of using BP network to determine the overall performance parameters of information system is put forward based on the modeling and simulation of information system. By using the inherent characteristic of BP approximation for nonlinear mapping, a quantitative Method to determine the overall system performance parameters. At the same time, the input and output parameters of BP network are discussed and defined, and the practicality of this method is proved by an example.