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《Computer Engineering and Design》 2010-01
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P2P streaming media broadcast system caching algorithm based on time-interval

YANG Jing1,2,LI Run-zhi1,2,WANG Zong-min1,2(1.School of Information Engineering,Zhengzhou University,Zhengzhou 450052,China;2.Henan Provincial Key Lab on Information Network,Zhengzhou 450052,China)  
In the P2P streaming media broadcasting system based on the data transferring in piece,peer’s cache have some problems such as the hitting ratio of data requests between the neighbor nodes and large number of redundant data slicing.A caching replacement algorithm based on the request number of the neighbor peers is proposed.This algorithm divides the caching time of each data into even interval.With the theory of Markovian status transfer probability matrix,the cache value of each data piece in next time intervals could be forecasted.The paper gives the comparative experiments among this algorithm,LRU and FIFO.According to the result of the simu-lation,this algorithm excels the traditional algorithm in the hitting of data requesting under the same condition.
【Fund】: 国家863高技术研究发展计划基金项目(2008AA01A315)
【CateGory Index】: TN948.64
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