title: Ranking reputation and quality in online rating systems.
abstract: How to design an accurate and robust ranking algorithm is a fundamental problem with wide applications in many real systems. It is especially significant in online rating systems due to the existence of some spammers. In the literature, many well-performed iterative ranking methods have been proposed. These methods can effectively recognize the unreliable users and reduce their weight in judging the quality of objects, and finally lead to a more accurate evaluation of the online products. In this paper, we design an iterative ranking method with high performance in both accuracy and robustness. More specifically, a reputation redistribution process is introduced to enhance the influence of highly reputed users and two penalty factors enable the algorithm resistance to malicious behaviors. Validation of our method is performed in both artificial and real user-object bipartite networks.
authors.affiliation: Department of Physics, University of Fribourg, Fribourg, Switzerland.
authors.forename: Hao
authors.initials: H
authors.lastname: Liao
authors.affiliation: Department of Physics, University of Fribourg, Fribourg, Switzerland.
authors.forename: An
authors.initials: A
authors.lastname: Zeng
authors.affiliation: Department of Physics, University of Fribourg, Fribourg, Switzerland.
authors.forename: Rui
authors.initials: R
authors.lastname: Xiao
authors.affiliation: Department of Physics, University of Fribourg, Fribourg, Switzerland; Research Center of Complex Systems Science, University of Shanghai for Science and Technology, Shanghai, China.
authors.forename: Zhuo-Ming
authors.initials: ZM
authors.lastname: Ren
authors.affiliation: Department of Physics, University of Fribourg, Fribourg, Switzerland; Web Sciences Center, University of Electronic Science and Technology of China, Chengdu, China.
authors.forename: Duan-Bing
authors.initials: DB
authors.lastname: Chen
authors.affiliation: Department of Physics, University of Fribourg, Fribourg, Switzerland.
authors.forename: Yi-Cheng
authors.initials: YC
authors.lastname: Zhang
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D020407:Internet; D011786:Quality Control