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In this paper we address the issue of content availability in p2p file sharing systems. Content availability is a public good: the copying of a file by one peer does not prevent another peer also from copying it; but contributing files to the common pool is costly. The asymptotic analysis of...
A fundamental consideration in designing successful trust scores in a peer-to-peer system is the self-interest of individual peers. We propose a strategyproof partition mechanism that provides incentives for peers to share files, is non-manipulable by selfish interests, and approximates trust...
Tit-for-tat style file sharing systems such as BitTorrent have proven to be remarkably effective in dealing with highly popular content. By explicitly addressing free-riding behavior, a "greedy" tit-for-tat approach encourages sharing and succeeds in providing a higher quality of service....
While the fundamental premise of peer-to-peer (P2P) systems is that of voluntary resource sharing among individual peers, there is an inherent tension between individual rationality and collective welfare that threatens the viability of these systems. This paper surveys recent research at the...
This report summarizes events and activities at the Sixth Association for Computing Machinery (ACM) Conference on Electronic Commerce (EC'05) held June 5-8 2005 in Vancouver, British Columbia, Canada. The program featured thirty-one talks, four tutorials, and two invited talks by Ehud Kalai and...
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