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- W2734699066 abstract "We consider the problem of proactive retention aware caching in a heterogeneous wireless edge network consisting of mobile users connected to a server and associated to one or more edge caches. Our goal is to design a caching policy that minimizes the sum of content storage costs and server access transmissions costs over two design variables: the retention time of each cached content and the probability that a user routes content requests to its associated caches. We develop a model that captures multiple aspects such as cache storage costs and several capabilities of modern wireless technologies, such as server multicast/unicast transmissions, device multipath routing, and cache access constraints. We formulate the problem of Proactive Retention Routing Optimization (PRRO) as a non-convex, non-linear mixed-integer program. We prove that it is NP-Hard under both multicast/unicast modes, even when the caches have a large capacity, and develop a greedy algorithm that has provable performance bounds. Finally, we propose a heuristic for the capacitated cache case that has low computational complexity. Systematic evaluations including real data sets demonstrate the effectiveness of our approach, compared to the existing caching schemes." @default.
- W2734699066 created "2017-07-21" @default.
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- W2734699066 date "2017-07-10" @default.
- W2734699066 modified "2023-09-27" @default.
- W2734699066 title "Hold'em Caching" @default.
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- W2734699066 doi "https://doi.org/10.1145/3084041.3084053" @default.
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