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Incentives Against Hidden Action in QoS Overlays

Landa, R; Rio, M; Gniffin, D; Clegg, R; Mykoniati, E; (2008) Incentives Against Hidden Action in QoS Overlays. In: Kellerer, W and Singhal, SK and Steinmetz, R, (eds.) P2P'08: EIGHTH INTERNATIONAL CONFERENCE ON PEER-TO-PEER COMPUTING, PROCEEDINGS. (pp. 12 - 21). IEEE COMPUTER SOC Green open access

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Peer-to-peer networks providing QoS-enabled services are sensitive to hidden action situations, where the actions of a server peer are hidden from the peers who receive services from it. This is because server peers can choose to strategically minimize their effort, and client peers may be unable to distinguish between cases where the server exerted insufficient effort and cases where the server kept its advertised effort levels but the end-to-end conditions in the network were sufficiently adverse. We propose a principal-agent model for hidden action that gives server peers sufficient incentives to meet their advertised effort levels, without client peers having to decide for each transaction whether the outcome was due to server behavior or network conditions. This allows peers to draft contracts that provide incentives for truthful revelation of QoS capabilities, and to have predictable transaction quality. We then exemplify the model for the case of a mesh-based, pull-oriented streaming system with low delay requirements. For this case, we show how to estimate the model parameters a function of the prevailing network conditions, and how to enforce contract fulfillment through a reciprocative strategy.

Type: Proceedings paper
Title: Incentives Against Hidden Action in QoS Overlays
Event: 8th International Conference on Peer-to-Peer Computing
Location: Aachen Univ, Aachen, GERMANY
Dates: 2008-09-08 - 2008-09-11
ISBN-13: 978-0-7695-3318-6
Open access status: An open access version is available from UCL Discovery
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/14960
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