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arXiv 2010.07585cs.NI
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自适应离线和在线基于相似性的缓存

Adaptive Offline and Online Similarity-Based Caching

Jizhe Zhou, Osvaldo Simeone, Xing Zhang, Wenbo Wang

摘要:

利用基于相似性的内容递送,可以通过在相异度成本下递送相关内容来满足对内容的请求。这封信解决了缓存和基于相似性的交付决策在整个网络中的联合优化,以最小化平均延迟和相异性成本的加权和。首先针对具有请求率先验知识的离线场景引入了一种收敛的交替梯度下降上升算法,然后将其扩展到在线场景。数值结果验证了该方法相对于标准的每缓存解决方案的优势。

英文摘要:

With similarity-based content delivery, the request for a content can be satisfied by delivering a related content under a dissimilarity cost. This letter addresses the joint optimization of caching and similarity-based delivery decisions across a network so as to minimize the weighted sum of average delay and dissimilarity cost. A convergent alternate gradient descent ascent algorithm is first introduced for an offline scenario with prior knowledge of the request rates, and then extended to an online setting. Numerical results validate the advantages of the approach with respect to standard per-cache solutions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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