基于社交访问行为与传播特性的在线视频内容部署与传输方法研究

项目名称： 基于社交访问行为与传播特性的在线视频内容部署与传输方法研究

项目编号： No.61272231

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 孙立峰

作者单位： 清华大学

项目金额： 84万元

中文摘要： 在线社交网络（Online Social Network）已经成为视频内容分发的重要平台并对用户如何访问视频产生了根本性的影响。在线视频表现出流量快速增长，并具有突发时变的特性，现有在线视频部署和传输的策略，如内容分发网络（CDN）、P2P技术，由于缺少对内容访问的预知，无法有效降低系统资源消耗、快速响应用户请求，已成为在线视频服务提供商面临的巨大挑战，需要进行重新设计视频内容的部署和传输策略。本项目将研究对在线社交网络用户行为与视频内容访问之间关联规律进行大规模测量和建模的理论与方法，提出基于社交访问行为预测的视频内容部署策略，降低在线视频服务的资源开销，提出基于社交传播的视频内容缓存、预取等传输策略，优化系统资源利用效率，提高用户在线视频访问的体验。

中文关键词： 视频分发；社交媒体；网络多媒体；社交网络；

英文摘要： Recent years have witnessed a rapid convergence of online social network service and online video service. More and more video contents have been imported from video sharing systems to the online social networks and shared between users in the online social network. The online social network is becoming an important approach for users to consume video contents. However, due to the unique propagation patterns of videos in the online social network, traditional approaches for video service deployment and transmission are facing great challenges, e.g., how to facilitate an effective cloud-based infrastructure for socialized video service deployment, and how to efficiently deliver the videos to users with best service quality. To realize the potential of the socialized video service, in this research, (1) we will perform extensive measurement studies based on real-world traces obtained from multiple online social network services and video services, to bridge the gap between studies in online social network and online video service and motivate our deployment and transmission studies; (2) we will design cloud-based deployment for the backbone of the socialized video service, where not only the network resource but also the social propagation patterns are considered; and (3) we will design peer-assisted delivery stra

英文关键词： Video Delivery；Social Media；Networked Multimedia；Social Network；