中文摘要：

针对交互式流媒体的特点,提出了基于段流行度的交互式流媒体代理服务器缓存算法,根据流媒体对象的段流行度,实现了代理服务器缓存的接纳和替换,使流媒体对象的段在代理服务器中缓存的数据量和其流行度成正比.仿真结果表明,该算法在不同的用户请求模式和交互强度下,可以提供较小的被延迟的请求率和较高的字节命中率,尤其适于交互强度较高的用户请求.

英文摘要：

On the basis of the characteristics of interactive streaming medias, a novel proxy caching algorithm was proposed by using the segment popularity. Proxy caching admission and replacement algorithm based the object segment popularity for streaming media was implemented. Obeyed would be the principle that the data cached for each streaming media object segment are in proportion to their popularity at the proxy server. Simulation results show that this algorithm is applicable to the users with high requesments for interactive intension, because it can gain less delayed requested ratio and more byte-hit ratio.