Pengkui Luo

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—Sampling of large social graphs is used for addressing infeasibility of measurements in large social graphs, or for crawling graphs from online social network services where accessing an entire social graph at once is often impossible. Sampling algorithms aim at maintaining certain properties of the original graphs in the sampled (or crawled) ones. Several(More)
(2015). Leveraging client-side DNS failure patterns to identify malicious behaviors. Porto, the institutional repository of the Politecnico di Torino, is provided by the University Library and the IT-Services. The aim is to enable open access to all the world. Please share with us how this access benefits you. Your story matters. Publisher copyright claim:(More)
The focus of this paper is to survey the use of EXOR routing scheme and routing metrics to be applied in hybrid wireless networks over the traditional unicast routing protocols used for mobile ad hoc networks. On performing a thorough analysis of various literatures, it is proposed that use of EXOR with ETX metric in hybrid wireless networks would give a(More)
—The Internet content delivery market has been positioned for tremendous growth. To capture the essentials of pricing structures in this market, we develop an economic model incorporating prices with provider investments in the demand function, and obtain equilibrium prices and investments under both monopoly and competitive settings for transport(More)
— The slow convergence under intra-domain link or router failures is a challenge for latency-sensitive applications in the IP networks. A variety of IP Fast ReRoute (IPFRR) schemes have been proposed to address the issue in the literature. Our paper reviews several of these IPFRR schemes: Loop Free Alternate, U-Turn Alternate, and in particular, NotVia(More)
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