First it used the information entropy theory to search the possible network structure quickly.Then, found out the best BN structure using the immune genetic algorithm. 首先，通过信息论迅速搜索较为可能的网络空间，构造一个候选网络，然后用免疫遗传算法进行网络精简，得到一个最优的网络结构。
This paper is about the network architecture and the technology of equipments of video on de-mand. It also points out some shortages of the technology. 本文分析了影视点播的网络结构和设备的主要技术，并指出其存在的问题。
