| 基于GA-BP神经网络的VOD代理节目预取模型 |
| |
| 引用本文： | 蒋亚军,杨震伦.基于GA-BP神经网络的VOD代理节目预取模型[J].电信科学,2011,27(5):104-109. |
| |
| 作者姓名： | 蒋亚军 杨震伦 |
| |
| 作者单位： | 广州番禺职业技术学院信息工程学院;华南理工大学计算机科学与工程学院; |
| |
| 基金项目： | 广州市高校科技计划资助项目(No.62077) |
| |
| 摘 要： | VOD代理服务器的节目预取方法决定了园区网VOD系统的整体运行效率。提出一种节目预取模型,采用BP神经网络构建分类器并对VOD节目进行分类,再根据分类结果采用基于分组的方法实现代理服务器的节目预取。模型中引入遗传算法对已建立的分类模型进行改进,以克服局部极小值问题。仿真实验表明,该预取模型具有较高的命中率,能有效提高代理服务器的利用率。
|
| 关 键 词： | 遗传算法 反向传播神经网络 节目预取 代理服务器 |
Data Prefetching Model for VOD Proxy Based on GA-BP Neural Network |
| |
| Jiang Yajun,Yang Zhenlun.Data Prefetching Model for VOD Proxy Based on GA-BP Neural Network[J].Telecommunications Science,2011,27(5):104-109. |
| |
| Authors: | Jiang Yajun Yang Zhenlun |
| |
| Affiliation: | Jiang Yajun~1,Yang Zhenlun~(1,2) (1.School of Information Engineering,Panyu Polytechnic College,Guangzhou 511483,China,(2.School of Computer Science and Engineering,South China University of Technology,Guangzhou 510640,China) |
| |
| Abstract: | The prefetch algorithm of proxy servers is the key element to determine the efficiency of VOD system in campus networks.This paper presents a data prefetching model,BP neural network is used to build the classifier,and the classifier is applied to classify the programs in VOD system,and the classification results were used to commit data prefetch based on group structure and demand rate consideration.Genetic algorithm was introduced to improve the BP neural network,so the problem of incidental trap in local... |
| |
| Keywords: | genetic algorithm BP neural network data prefetching proxy |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
