Efficient Content Replacement Controller in Cooperative Caching Systems and method thereof

摘要

The present invention relates to a content replacement apparatus and method, and more particularly, to a content replacement apparatus and a content replacement method that support content replacement in a demand adaptive manner when contents demand information is not known, can be used in a cooperative caching system, To a content demand adaptive content replacement apparatus and method for a cooperative caching system based on a Markov Decision Process modeling. According to another aspect of the present invention, there is provided an information processing apparatus comprising: a receiving content deciding unit for acquiring a receiving content when a content is received from a neighboring cache server or a content source server; A caching state determiner for determining whether the received content determined by the received content determining unit is in a caching state in the cache server and transmitting the content to a requesting terminal without replacing the content if the received content is in a caching state; A replacement determining unit for determining a content to be replaced through reinforcement learning based on the Markov decision process modeling if the received content determined by the request deciding unit is not cached in the cache server as a result of the determination by the caching status determiner; And a replacement performing unit for replacing the content to be replaced determined by the replacement determining unit with the received content, and a content demand adaptive content replacing apparatus and method for a cooperative caching system.