基于构件的Web系统前馈神经网络可靠性模型

Component-Based Web System Back-Propagation Neural Network Reliability Model

对基于构件结构复杂度较高的Web系统进行可靠性评估时,基于状态或基于路径的软件可靠性评估模型计算复杂度较高,鲁棒性不足。为此,提出了一种计算复杂度低、鲁棒性强的基于构件的前馈神经网络可靠性模型CBPRM。CBPRM将Web系统中各构件的可靠性作为前馈神经网络输入,并基于构件可靠性敏感度对神经元进行动态优化,Web系统可靠性评估由前馈神经网络输出实现。理论分析和实验结果表明,在基于构件结构复杂度较高的Web系统可靠性评估中,CBPRM的计算复杂度低于对比模型,并可确保可靠性评估精度。

The stated-based and path-based software reliability evaluation models suffer from the high computational complexity and the absence of robustness for the component-based Web system evaluation with high complex structures. A Component-based Back-Propagation neural network Reliability Model （CBPRM） with a low computational complexity and robustness is proposed. The CBPRM employs the component reliabilities as the back-propagation neural network inputs. Based on the component reliability sensitivities, the neurons are optimized dynamically and the back-propagation neural network outputs the final Web system reliability evaluation. The theory analysis and experiment results present that the computational complexity of the CBPRM is evidently lower than the contrast models and the reliability evaluating accuracy is assured for the component-based Web system with high complex structures.