Peer-to-peer file sharing networks are becoming an important medium for the distribution of information goods. However, there is little academic research into the optimal design of these networks under real-world conditions. Our research represents an initial effort to analyze the impact of positive and negative network externalities on the optimal size of these P2P networks. Our analysis uses ...

We state that the problem of semantic interoperability in information search on the Internet is solved today mostly by means of centralization, both at a system and at a logical level. A new brand of system architectures, peerto-peer systems, indicates that the principle of decentralization might lead to solutions to many problems that scale well to very large numbers of users. In this position...

Recently, many researchers and practitioners have been working at the intersection of knowledge management, peer-to-peer, and online social networks. Results include concrete applications such as P2P knowledge sharing or collaboration platforms on the web (wikis, folksonomy tools). On the other hand, a lot of analyses and models are available that aim at explaining the processes that govern the...

The Chord protocol is a structured Peer-to-Peer (P2P) protocol based on distributed hash tables (DHT). By using hash keys to identify the nodes in the network and also the shared objects, it can significantly reduce the signaling overhead in a P2P overlay network, as flooding of query messages can be avoided. However, when nodes join or leave the Chord network, object references have to be rear...

A considerable number of studies have been performed recently on mobile peer-to-peer networks (MOPNETs), as the number of services based on mobile devices has increased. However, existing studies still reveal numerous shortcomings, such as bandwidth overhead, and redundant transmission in terms of multi-broadcast between peers. Especially, owing to the characteristics of MOPNETs, it is extremel...

The peer-to-peer (P2P) paradigm presents an attractive solution for applications that require scalability, fault-tolerance and autonomy. P2P systems in their basic unstructured form suffer high costs when it comes to efficiently locating content, mainly due to the lack of global knowledge. It is therefore crucial to organize content in an unsupervised way by creating groups of peers with simila...

Peer-to-Peer (P2P) networking in a mobile learning environment has become a popular topic of research. One of the new emerging research ideas is on the ability to combine P2P network with server-based network to form a strong efficient portable and compatible network infrastructure. This paper describes a unique mobile network architecture, which reflects the on-campus students’ need for a mobi...

Peer-to-peer networks have emerged as a popular alternative to traditional client-server architectures for the distribution of information goods. Recent academic studies have observed high levels of free-riding in various peer-to-peer networks, leading some to suggest the imminent collapse of these communities as a viable information sharing mechanism. Our research develops an analytic model to...

After P2P file-sharing and VoIP telephony applications, VoD and live-streaming P2P applications have finally gained a large Internet audience as well. In this work, we define a framework for the comparison of these applications, based on the measurement and analysis of the traffic they generate. In order for the framework to be descriptive for all P2P applications, we first define a minimum set...

P2P is a popular networking paradigm in today’s internet. As such, many research and development efforts are geared toward services that can be useful to the users of P2P networks. This paper is focused on the content-based publish/subscribe service and our problem is to devise an efficient mechanism that enables this service in any given P2P network of cooperative nodes. Most techniques requir...