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首页> 外文期刊>Engineering Applications of Artificial Intelligence >Towards conscientious peers: Combining agents and peers for efficient and scalable video segment retrieval for VoD services
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Towards conscientious peers: Combining agents and peers for efficient and scalable video segment retrieval for VoD services

机译：朝着认真的对等点：结合代理和对等点，以高效，可扩展地对VoD服务进行视频段检索

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摘要

In the last years, Video-on-Demand (VoD) systems, such as Youtube, have become a very popular way to watch videos. Researches in Multiagent Systems (MAS) and Peer-to-Peer (P2P) for VoD have focused on using agents to assist peers to share video segments efficiently, by replicating them or creating the best path between peers to transfer such segments. A key challenge faced by these systems is to efficiently search and to retrieve which peers own certain segments in order to provide the streaming service. In this paper we propose an innovative architecture that combines MAS and P2P network for multimedia information retrieval in the VoD environment This architecture, composed of a P2P and a MAS layer, supports streaming and random seeking while providing scalability and efficiency. The P2P layer is responsible for discovering the peers that own the video segments and share these segments among them. Nevertheless, if such search is time consuming, it is forwarded to the MAS layer. The MAS layer is responsible for monitoring groups of peers as well as for discovering agents that manage a group of peers sharing certain video segments that could not be found efficiently by peers. This is made for improving the sharing performance of its monitored peers. Experimental results, using several metrics, showed the viability of adopting our approach if compared with the most used approaches.
机译：在过去的几年中，诸如Youtube之类的视频点播（VoD）系统已经成为观看视频的一种非常流行的方式。用于VoD的多代理系统（MAS）和对等（P2P）研究的重点是使用代理来帮助对等端有效地共享视频段，方法是复制它们或在对等端之间创建最佳路径以传输这些段。这些系统面临的关键挑战是有效地搜索和检索哪些对等方拥有某些段以便提供流服务。在本文中，我们提出了一种创新的体系结构，该体系结构结合了MAS和P2P网络，用于在VoD环境中进行多媒体信息检索。该体系结构由P2P和MAS层组成，支持流式传输和随机查找，同时提供可伸缩性和效率。 P2P层负责发现拥有视频段并在其中共享这些段的对等方。然而，如果这种搜索很费时，则将其转发到MAS层。 MAS层负责监视对等体组，以及发现管理一组对等体的代理，这些对等体共享对等体无法有效找到的某些视频段。这样做是为了提高其受监视对等方的共享性能。与几种最常用的方法相比，使用几种指标的实验结果表明采用我们的方法的可行性。

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