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The Information Technology is improving these days, which pushes users' experience for video services to improve rapidly. In this trend, to improve the quality of experience (QoE) of online video service, a Measuring and Recommending System for Online Video Service (MCS) have been developed. In some traditional method, researchers classify resources with their video with the video attribute to reduce...
Video services are flourishing, and the same content might be hosted by different websites. A user typically does not care about which provider provides the service to him/her but rather the quality of the service. However, the network condition is not stable and it is hard to obtain the service performance in real time during the online service. Therefore, it is very important to understand the potential...
With the increasing demand of the big data processing and the personalized services in the Internet, the current service platforms such as cloud are becoming hard to meet the requirement of multiple-level quality of services (QoS) within a short execution time. In this paper, an on-site elastic autonomous service network named SEA is proposed to cope with the above problems by utilizing the available...
Cloud becomes increasingly important currently, and media services, which usually have multiple steps and complexity computing requirement, are applied in it. Although this scheduling topic has been investigated a lot, most of works focus on balancing jobs or decreasing the execution time of one job. For large scale paralleling media services, the job request usually contains a series tasks, and how...
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,...
This paper designs an infrastructure to meet the resource requirements, and more importantly, the QoS (quality of service) requirements for networked multimedia services. Learning from the successful experiences of distributed systems, the infrastructure deploys clusters of devices at the edge to improve the probability for end users to get satisfying QoS, and a two-layer management architecture is...
To predict the availability state of a node in a distribution network, its history trace is usually used. Sometimes, some usage behavior patterns cannot be captured precisely from the insufficient trace, which may lead to unreliable predictors. In this paper, to alleviate the data sparseness problem, the nodes with the similar behaviors are clustered, and all history information in a same cluster...
For some media service systems in Internet, providing the service in real time is the key point to obtain the satisfying performance. In order to get good user experience, nodes are often organized as groups and the nodes in a same group can cooperate with each other. Accordingly, how to organize the nodes is an important problem that affects the performance of systems. Usually, enough node capability...
P2P video-on-demand(VoD) system shows its advantage in network scaling. In VoD systems, how to organize the peers and how to schedule data among peers are popular research topics. However, the relationship between these two parts and whether the service quality affects the overlay structure is not described exactly. In this paper, we consider the overlay organization and data scheduling process as...
In order to evaluate the influence of neighbors' quality to P2P streaming system's performance during scheduling, this paper establishes a markov chain based differential function model to analyze the relationship between peer's average startup delay and probability neighbors have wanted data as well as neighbors' available upload bandwidth. This paper also proposes a scheduling feedback algorithm,...
Data scheduling is the key issue in peer-to-peer streaming system, especially in peer-to-peer VoD system. This paper mainly focuses on data chunkspsila priority definition of data scheduling in peer-to-peer VoD system. After carefully studying the meanings of regular rarest first scheduling and random scheduling, a local-rarest-random-heurist (LR2H) scheduling is proposed in order to fully use the...
In a content distribution network based on overlay networks, the peer's upload bandwidth is always constrained. To optimize the system performance, one problem is how to assign the upload capacity to the right neighbors for transferring data blocks. In a system using network coding technology, a strategy which is to select the right neighbors based upon the degrees of them is proposed. The selection...
Identifying the language origin of a name in English is important for generating its correct pronunciation. In this paper, N-grams of syllable-based letter clusters are proposed for the task. The performance of the N-gram model of a set of frequently used letter clusters (correspond to syllables) is compared to that of letter N-gram model in a four-language task: English, German, French, and Portuguese...
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