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To effectively utilize storage space of edge streaming media servers, cache policies are being studied. Unlike traditional work that focused on hit ratio and overall system bandwidth cost, this paper recognize different significance of users and propose the concept of caching utility as a new metric to evaluate caching strategies. A user based caching algorithm, USCS, involving differentiated service...
Network virtualization is an important technique to allow multiple customized networks to cohabit on a shared substrate network. In order to put the network virtualization into practice, the virtual network embedding (VNE) problem that searching an efficient mapping of a virtual network request onto substrate network resources should be solved primarily. Since the VNE problem is known to be NP-hard,...
Catalog pages construct the intermediate layer in architecture of a standard Web site; therefore research on information retrieval for this kind of pages can be beneficial to improve Web crawler's efficiency. A page is called "catalog-style" if its main body is displayed as a sequence of regular entries, and the central link in each entry apparently contains the pagepsilas major information...
Chord is known to be limited in routing efficiency since all nodes are on the overlay without considering the underlying network topology. In this paper, a Chord routing algorithm based on limited network layer multicast, called MChord, is proposed, which uses multicast technology to obtain physical neighbor information for routing. Simulation shows that it can shorten network search delay greatly,...
P2P services develop rapidly in Internet where the P2P traffic has surpassed Web. Providing P2P services in the mobile network is becoming a big opportunity but also challenge for mobile operators. Considering both characteristics of mobile network and P2P mode, the architecture of HIKEC, an IMS-based mobile P2P file sharing service, is proposed in this paper. The hybrid Napster + Chord overlay network...
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