In many large-scale content sharing applications, participants or peers are grouped together forming clusters based on their content or interests. In this paper, we deal with the maintenance of such clusters in the presence of updates. We model the evolution of the system as a strategic game, where peers determine their cluster membership based on a utility function of the query recall. Peers a...

In a Peer Data Management System (PDMS), autonomous peers share semantically rich data. For queries to be translated across peers, a peer must provide a mapping to other peers in the PDMS; peers connected by such mappings are called acquaintances. To maximize query answering ability, a peer needs to optimize its choice of acquaintances. This paper introduces a novel framework for performing acq...

A longitudinal model that tested mediating pathways between protective family processes and HIV-related behavior was evaluated with 195 African American youth. Three waves of data were collected when the youth were 13, 15, and 19 years old. Evidence of mediation and temporal priority were assessed for three constructs: academic engagement, evaluations of prototypical risk-taking peers, and affi...

Peer-to-Peer systems have proven to be an effective way of sharing data. The focus of this paper is on distributed search based on Peer-to-Peer technology. In this paper we present the pRoute system where peers advertise a short description of the content that they share, namely a set of terms. Peers remember the advertisements of related peers and thereby form a semantic overlay by which we me...

It is important to enable peers to represent and update their trust in other peers in open networks for sharing files, and especially services. In this paper, we propose a Bayesian network-based trust model and a method for building reputation based on recommendations in peer-topeer networks. Since trust is multi-faceted, peers need to develop differentiated trust in different aspects of other ...

BitTorrent continues to comprise the largest fraction of Internet traffic. While significant progress has been made in understanding the BitTorrent choking mechanism, its security vulnerabilities have not been investigated thoroughly. This paper presents an experimental analysis of bandwidth attacks against different choking algorithms in the BitTorrent seed state. We reveal a simple exploit th...

A consequential piece of the network traffic is produced by P2P applications. To provide quality of services, P2P needs contribution of varied intermediate peers. P2P network allocate the structural opportunity of reciprocally sharing and dispenser user-created contents inside diversity of user society environments. These networks are the collections of huge quantity of diverse nodes recognized...

We study the problem of distributing a file initially located at a server among a set of peers. Peers who downloaded the file can upload it to other peers. The server and the peers are connected to each other via a core network. The upload and download rates to and from the core are constrained by user and server specific upload and download capacities. Our objective is to minimize the makespan...

Trust between two communicating peers is increasingly catching the attention of the research community. Numerous trust models and trust management protocols have been proposed to enable the task of establishing trust between two communicating peers. In this paper, we enumerate all the possible types of trust relationships between two peers in P2P communication, with examples. Additionally, we d...