基于元建模的移动Ad Hoc网络性能优化

Optimization of Mobile Ad Hoc Network Performance Using Metamodeling Methodology

针对移动Ad Hoc网络性能优化过程中的仿真模型精确性与仿真模型运行效率之间的矛盾,提出了利用相关向量元模型来拟合网络仿真模型并进行优化的解决方法。重点研究了元建模方法中的实验设计方法、元模型拟合方法、模型验证与评估等关键技术。利用适度精确的元模型替代仿真模型进行设计空间探索和多目标优化,实验结果表明,基于元模型的优化可以成功应用于移动Ad Hoc网络等复杂系统建模、分析与优化,有效提高此类计算密集过程的计算效率。

To address the dilemma between the accuracy of simulation model and runtime efficiency which take place in the simulation based network performance optimization of mobile ad hoc networks, the metamodeling methodology is investigated to characterize and optimize the performance of network. In this paper, three metamodeling techniques are researched in detail, which are design of experiment, metamodel choosing and model fitting and model validation. With a reasonably accurate metamodel as a ＂surrogate＂,the design space is explored and performance optimization is carried on. The result shows that the metamodel based optimization can improve the efficiency of computation - intensive process, and it can be successfully applied to the domain of complex systems such as mobile ad hoc networks, facilitating system modeling, analysising and optimization.