Offering High-Definition Peer-Assisted Video On-Demand Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Offering High-Definition Peer-Assisted Video On-Demand Systems write by Le Chang. This book was released on 2013. Offering High-Definition Peer-Assisted Video On-Demand Systems available in PDF, EPUB and Kindle. The past decade has witnessed the fast development of peer-assisted video ondemand (PA-VoD) systems, which have attracted millions of online users. The efforts on improving the quality of video programs have never ceased since the beginning, and nowadays offering high-definition (HD) channels has become a common practice. However, compared with standard-definition (SD) channels, HD channels have to sustain a higher streaming rate to peers, which is a challenging task. In real systems, HD channels often suffer from poor streaming quality, or impose a heavy burden on the servers. This thesis conducts an in-depth study on peer cache and upload bandwidth management at the same time for multi-channel PA-VoD systems, where HD and SD channels coexist with different bandwidth and cache requirements. The objective is to minimize the server bandwidth consumption, and thus the maintenance cost of VoD service providers. The solution is cross-channel allocation (or view-upload decoupling), i.e., making SD channels help HD viewers with the surplus peer-contributed resources. The management of these resources includes bandwidth allocation and caching strategies. We first propose a generic modeling framework to capture the essential characteristics of PA-VoD systems: the demand and supply of bandwidth from peers. Our modeling framework can be customized or extended to model a variety of caching strategies, including FIFO, passive caching, and active caching with different user behaviors. We then apply the modeling framework to two representative scenarios: stationary scenarios, where the channels have fixed popularity; and non-stationary scenarios, in which a new movie is released, and peers enter the channel in a flash-crowd manner. We prove using our models that passive caching is efficient for stationary user behaviors, and derive the optimal caching solutions when the channels in the system demonstrate different popularity evolutions, i.e., with non-stationary behaviors. With the insights gained from our modeling work, we design effective centralized heuristic algorithms and practical distributed strategies for peer cache replacement and upload bandwidth allocation, with a near-optimal utilization of these resources. We propose centralized and distributed cross-channel allocation, and also extend the substreaming technique from live streaming to VoD systems, where it demonstrates its extreme feasibility. Our extensive simulation results verify the efficacy of these heuristic and practical strategies.
On the Design of Peer-assisted Video-on-demand Systems
On the Design of Peer-assisted Video-on-demand Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook On the Design of Peer-assisted Video-on-demand Systems write by Jiahua Wu. This book was released on 2009. On the Design of Peer-assisted Video-on-demand Systems available in PDF, EPUB and Kindle.
Large-Scale Peer-Assisted Online Hosting, Distribution and Video Streaming Systems
Large-Scale Peer-Assisted Online Hosting, Distribution and Video Streaming Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Large-Scale Peer-Assisted Online Hosting, Distribution and Video Streaming Systems write by Fangming Liu. This book was released on 2019-04. Large-Scale Peer-Assisted Online Hosting, Distribution and Video Streaming Systems available in PDF, EPUB and Kindle.
Transactions on Large-Scale Data- and Knowledge-Centered Systems XX
Transactions on Large-Scale Data- and Knowledge-Centered Systems XX - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Transactions on Large-Scale Data- and Knowledge-Centered Systems XX write by Abdelkader Hameurlain. This book was released on 2015-03-17. Transactions on Large-Scale Data- and Knowledge-Centered Systems XX available in PDF, EPUB and Kindle. The LNCS journal Transactions on Large-Scale Data- and Knowledge-Centered Systems focuses on data management, knowledge discovery, and knowledge processing, which are core and hot topics in computer science. Since the 1990s, the Internet has become the main driving force behind application development in all domains. An increase in the demand for resource sharing across different sites connected through networks has led to an evolution of data- and knowledge-management systems from centralized systems to decentralized systems enabling large-scale distributed applications providing high scalability. Current decentralized systems still focus on data and knowledge as their main resource. Feasibility of these systems relies basically on P2P (peer-to-peer) techniques and the support of agent systems with scaling and decentralized control. Synergy between grids, P2P systems, and agent technologies is the key to data- and knowledge-centered systems in large-scale environments. This, the 20th issue of Transactions on Large-Scale Data- and Knowledge-Centered Systems, presents a representative and useful selection of articles covering a wide range of important topics in the domain of advanced techniques for big data management. Big data has become a popular term, used to describe the exponential growth and availability of data. The recent radical expansion and integration of computation, networking, digital devices, and data storage has provided a robust platform for the explosion in big data, as well as being the means by which big data are generated, processed, shared, and analyzed. In general, data are only useful if meaning and value can be extracted from them. Big data discovery enables data scientists and other analysts to uncover patterns and correlations through analysis of large volumes of data of diverse types. Insights gleaned from big data discovery can provide businesses with significant competitive advantages, leading to more successful marketing campaigns, decreased customer churn, and reduced loss from fraud. In practice, the growing demand for large-scale data processing and data analysis applications has spurred the development of novel solutions from both industry and academia.
Overlay Networks
Overlay Networks - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Overlay Networks write by Sasu Tarkoma. This book was released on 2010-02-09. Overlay Networks available in PDF, EPUB and Kindle. With their ability to solve problems in massive information distribution and processing, while keeping scaling costs low, overlay systems represent a rapidly growing area of R&D with important implications for the evolution of Internet architecture. Inspired by the author's articles on content based routing, Overlay Networks: Toward Information
