Active measurement of PPStream VOD system and client behavior analysis
Hu Xin · Journal of Computer Applications · 2011
The analysis results on PPStream-VOD System client behavior characteristics were presented in this paper.This study began from researching on peer-distributing protocol and the architecture of Buffer-Map based on passive measurement.A dedicated PPS-VOD crawler was deployed to capture clients' Buffer-Map and study the characteristics of client watching behavior.By accurate data analysis,the client behavior was classified as Long-Smoother,Short-Smoother and Jumper.Then the proportion of three kinds of clients and their different watching behaviors were proposed. The concept watching viscosity was put forward to reveal the attraction of program to users,which is in direct proportion to average watching time,and in inverse proportion to slope of probabillty accumulation curve.