The use of peer-to-peer overlay networks (P2P) to deliver live television on the Internet (P2P TV) is gaining increasing attention. P2P TV systems are growing nowadays at increasing speed as a result of the opening of video content producers to new business models. This process is supported and accelerated by larger bandwidth availability of Internet and better algorithms for compression, repro...

Decentralized data management has been addressed during the years by means of several technical solutions, ranging from distributed DBMSs, to mediatorbased data integration systems. Recently, such an issue has been investigated in the context of Peer-to-Peer (P2P) architectures. In this chapter we focus on P2P data integration systems, which are characterized by various autonomous peers, each p...

Decentralized data management has been addressed during the years by means of several technical solutions, ranging from distributed DBMSs, to mediatorbased data integration systems. Recently, such an issue has been investigated in the context of Peer-to-Peer (P2P) architectures. In this chapter we focus on P2P data integration systems, which are characterized by various autonomous peers, each p...

Recently a new generation of P2P systems, offering distributed hash table (DHT) functionality, have been proposed. These systems greatly improve the scalability and exact-match accuracy of P2P systems, but offer only the exact-match query facility. This paper outlines a research agenda for building complex query facilities on top of these DHT-based P2P systems. We describe the issues involved a...

Various kinds of distributed systems gain much attention in recent years. One of the most significant example is the Peer-to-Peer (P2P) paradigm widely used in many applications including: file-sharing systems (e.g. BitTorrent), computing systems (e.g. SETI@home), communication systems (e.g. Skype) and many others. In this work we present our latest research related to the problem of P2P-based ...

P2P streaming systems, such as PPLive, PPStream, and TVUPlayer, have become popular services with the widespread deployment of broadband networks. However, P2P streaming systems still face free-riding problems, similar to those that have been observed in P2P file sharing systems. Thus, one important problem in providing streaming services is that of providing appropriate incentives for peers to...

Almost all recent researches on P2P systems focus on how to build a highly usable P2P overlay network. Researchers include small routing table, short query path and good robustness into their design objectives of overlay topology. In this paper, we present a general group theory method and define a new Cayley graph. Based on this Cayley graph, we propose a novel P2P overlay network called CHC, ...

Peer-to-Peer systems have become a focus of distributed computing these years. Document discovery is a key problem in this field. In this paper, abstract indices are proposed for content-based information retrieval in Peer-to-Peer systems, especially for multimedia documents. Abstract information is extracted from the shared documents of each peer, then the similar documents on other peers can ...

with more than 350 participants, 23 demonstrations from EU and nationally funded research projects, 6 co-located technical workshops and 36 technical talks was one of the most important and visible events focusing on Networked Electronic Media in 2011. Among all accepted papers, a best paper committee selected the most exciting, innovative and technically mature contributions. The current issue...