Non-sequential Multimedia Caching

Non-sequential media is seen as a number of semantically meaningful units derived from several videos. A video notation is introduced to express and compare different transmission types including caching. Furthermore, the idea of grouping units based on user intentions is described, which is the basis for two cache admission policies (simple and rank-based). These policies are compared regarding efficiency and hit rate. The evaluation is based on simulation and shows that a replacement policy that considers the popularity of the units is needed.