John Folkerts

Abstract

Recent literature contains many examples of reputation systems which are constructed in an ad hoc way or rely upon some heuristic which has been found to be useful. However, comparisons between these reputation systems has been impossible because there are no established methods of comparing performance. This paper introduces a simulation framework which can be used to perform comparison analysis between reputation models. Two reputation models, one from Abdul-Rahman and Hailes (ARH) [1], and one from Mui, Mohtashemi, and Halberstadt (MMH) [17] are implemented and compared with regard to accuracy, performance and resistance to deception. In order to improve performance in certain cases, MMH is modified to distinguish the concept of “trust” from the concept of “reputation.” Additionally we examine the results of shortening the memory of MMH in order to improve results in environments that are constantly changing.

Library of Congress Subject Headings

Deception--Computer simulation; Internet--Security measures; Internet--Social aspects; Social perception--Computer simulation; Trust--Computer simulation

Publication Date

2005

Document Type

Thesis

Department, Program, or Center

Computer Science (GCCIS)

Advisor

Bischof, Hans-Peter

Advisor/Committee Member

Radziszowski, Stanislaw

Advisor/Committee Member

Reznik, Leon

Comments

Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: BF575.T7 F65 2005

Campus

RIT – Main Campus

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