Ki-Dong Chung

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In this paper, we propose a PPC (Populari@-based Partial Caching) scheme for continuous media objects on the proxy servers. In this scheme, either the initial portion or the entire blocks of objects are cached and the size of the initial portion of each stream varies with the popularity of that stream. Under the proposed scheme, the initial latency(More)
According to the current profound development of multimedia and networking technologies, the way people communicate with, naturally, has evolved from a textoriented into a multimedia-oriented. But, the VOD system technologies can’t be easily applied to MNOD system because of the difference of the basic data and its properties. This is the reason why we(More)
The two-layered distributed clustered server architecture consisting of a control server and a group of storage servers has been widely used to support multimedia file systems. With this kind of the server architecture, it is easy to sustain disk load balancing and scalable disk bandwidth. However, it brings about the communication overhead between the(More)
The NOD article makes a difference to VOD data in terms of media type, size, creation interval and user interactivity. Because of these intrinsic characteristics, user access patterns of the NOD article can be different from that of VOD data. In this paper, we analyze the log file of one electronic newspaper to show the short-term popularity and long-term(More)