Computer Science – Networking and Internet Architecture
Scientific paper
2009-12-05
International Journal of Computer Science and Information Security, IJCSIS, Vol. 6, No. 2, pp. 208-214, November 2009, USA
Computer Science
Networking and Internet Architecture
7 pages IEEE format, International Journal of Computer Science and Information Security, IJCSIS November 2009, ISSN 1947 5500,
Scientific paper
Solving free riding and selecting a reliable service provider in P2P networks has been separately investigated in last few years. Using trust has shown to be one of the best ways of solving these problems. But using this approach to simultaneously deal with both problems makes it impossible for newcomers to join the network and the expansion of network is prevented. In this paper we used the game theory to model the behavior of peers and developed a mechanism in which free riding and providing bad service are dominated strategies for peers. At the same time newcomers can participate and are encouraged to be active in the network. The proposed model has been simulated and the results showed that the trust value of free riders and bad service providers converge to a finite value and trust of peers who provide good service is monotonically increased despite the time they join the network.
Hosseini Ehsan
Nematbakhsh Mohammad Ali
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