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A New Reputation Mechanism Against Dishonest Recommendations in P2P Systems

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Web Information Systems Engineering – WISE 2007 (WISE 2007)

Part of the book series: Lecture Notes in Computer Science ((LNISA,volume 4831))

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Abstract

In peer-to-peer (P2P) systems, peers often must interact with unknown or unfamiliar peers without the benefit of trusted third parties or authorities to mediate the interactions. Trust management through reputation mechanism to facilitate such interactions is recognized as an important element of P2P systems. However current P2P reputation mechanism can not process such strategic recommendations as correlative and collusive ratings. Furthermore in them there exists unfairness to blameless peers. This paper presents a new reputation mechanism for P2P systems. It has a unique feature: a recommender’s credibility and level of confidence about the recommendation is considered in order to achieve a more accurate calculation of reputations and fair evaluation of recommendations. Theoretic analysis and simulation show that the reputation mechanism we proposed can help peers effectively detect dishonest recommendations in a variety of scenarios where more complex malicious strategies are introduced.

Supported by National Basic Research Program of china under Grand (No.2005CB321800), National Natural Science Foundation of China under Grant (No.90412011, 60625203) and National High-Tech Research and Development Plan of China under Grant (2005AA112030).

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Boualem Benatallah Fabio Casati Dimitrios Georgakopoulos Claudio Bartolini Wasim Sadiq Claude Godart

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© 2007 Springer-Verlag Berlin Heidelberg

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Chang, J., Wang, H., Yin, G., Tang, Y. (2007). A New Reputation Mechanism Against Dishonest Recommendations in P2P Systems. In: Benatallah, B., Casati, F., Georgakopoulos, D., Bartolini, C., Sadiq, W., Godart, C. (eds) Web Information Systems Engineering – WISE 2007. WISE 2007. Lecture Notes in Computer Science, vol 4831. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76993-4_37

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  • DOI: https://doi.org/10.1007/978-3-540-76993-4_37

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-76992-7

  • Online ISBN: 978-3-540-76993-4

  • eBook Packages: Computer ScienceComputer Science (R0)

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