Abstract: An improved PSO algorithm is used to carry on the optimization to the BP neural network weight.This paper takes the LAN/WLAN integration network as background，LAN/WLAN integration network reliability prediction models are established with three methods（BP neural network， BP neural network based on modified PSO，SVM）.Compared with the experimental，the validity and superiority of modified PSO-based neural network prediction model have proven.

摘要： 首先利用一种改进后的粒子群算法对BP神经网络权值的选取进行优化，然后以LAN/WLAN集成网络为背景，用三种方法（BP神经网络、改进PSO算法优化后的BP神经网络、SVM）建立了LAN/WLAN集成网络可靠性的预测模型，最后通过实验比较，证明了改进后的神经网络模型预测通信网的可靠性、有效性和优越性。