- Electrical and Electronic Engineering - Research Publications
Electrical and Electronic Engineering - Research Publications
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ItemEstimating Video Popularity From Past Request Arrival Times in a VoD SystemWang, T ; Jayasundara, C ; Zukerman, M ; Nirmalathas, A ; Wong, E ; Ranaweera, C ; Xing, C ; Moran, B (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-31)Efficient provision of Video-on-Demand (VoD) services requires that popular videos are stored in a cache close to users. Video popularity (defined by requested count) prediction is, therefore, important for optimal choice of videos to be cached. The popularity of a video depends on many factors and, as a result, changes dynamically with time. Accurate video popularity estimation that can promptly respond to the variations in video popularity then becomes crucial. In this paper, we analyze a method, called Minimal Inverted Pyramid Distance (MIPD), to estimate a video popularity measure called the Inverted Pyramid Distance (IPD). MIPD requires choice of a parameter, $k$ , representing the number of past requests from each video used to calculate its IPD. We derive, analytically, expressions to determine an optimal value for $k$ , given the requirement on ranking a certain number of videos with specified confidence. In order to assess the prediction efficiency of MIPD, we have compared it by simulations against four other prediction methods: Least Recency Used (LRU), Least Frequency Used (LFU), Least Recently/Frequently Used (LRFU), and Exponential Weighted Moving Average (EWMA). Lacking real data, we have, based on an extensive literature review of real-life VoD system, designed a model of VoD system to provide a realistic simulation of videos with different patterns of popularity variation, using the Zipf (heavy-tailed) distribution of popularity and a non-homogeneous Poisson process for requests. From a large number of simulations, we conclude that the performance of MIPD is, in general, superior to all of the other four methods.
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ItemCost-Effective Path Planning for Submarine Cable Network ExtensionWang, Q ; Guo, J ; Wang, Z ; Tahchi, E ; Wang, X ; Moran, B ; Zukerman, M (IEEE, 2019-05-23)We describe a cost-effective approach to path planning for submarine cables connecting a given site to an existing cable network on the Earth's surface. The objective is to minimize the overall life-cycle cost of submarine cables by considering multiple design considerations. With the surface terrain represented by a triangulated manifold, we formulate the problem as one of the variational optimization framed in terms of an Eikonal equation and solved by leveraging the fast marching method. The results based on real-world three-dimensional data are presented to illustrate the performance of this approach in the submarine cable network extension.
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ItemImproving the fairness of FAST TCP to new flowsCui, T ; Andrew, LLH ; Zukerman, M ; Tan, L (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-05)
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ItemRaQ: A robust active queue management scheme based on rate and queue lengthSun, J ; Zukerman, M (ELSEVIER, 2007-06-08)
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ItemInstability effects of two-way traffic in a TCP/AQM systemSun, J ; Chan, S ; Ko, K-T ; Chen, G ; Zukerman, M (ELSEVIER, 2007-07-31)
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ItemA generalized FAST TCP schemeYuan, C ; Tan, L ; Andrew, LLH ; Zhang, W ; Zukerman, M (ELSEVIER SCIENCE BV, 2008-09-05)
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ItemA Markovian framework for performance evaluation of IEEE 802.11Foh, CH ; Zukerman, M ; Tantra, JW (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-04)
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ItemEnhanced blocking probability evaluation method for circuit-switched trunk reservation networksRaskutti, G ; Zalesky, A ; Wong, EWM ; Zukerman, M (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-06)
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ItemAnalysis of OBS networks with limited wavelength conversionRosberg, Z ; Zalesky, A ; Vu, HL ; Zukerman, M (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-10)
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ItemPrioritized deflection routing in optical burst switching networksCameron, C ; Zalesky, A ; Zukerman, M (IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, 2005-05)