Modeling Dynamic Trust and Risk Evaluation Based on High-Order Moments
Joint Authors
Gao, Yan
Liu, Wenfen
Dai, Zhiyong
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-22
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
This paper proposes a dynamic trust and risk evaluation model based on high-order moments.
The credibility of an entity is measured with trust degree and risk value comprehensively.
Firstly, considering the dynamic and time decay characters of trust, a time attenuation function is defined, and direct trust is further expressed.
Subsequently, in order to improve the accuracy of feedback trust, a filter mechanism is constructed to eliminate the false feedback, combining coefficient of skewness with hypothesis test.
More importantly, the weights of direct trust and feedback trust are derived subjectively and adaptively with the moments and frequency of direct interactions.
Furthermore, risk is evaluated with direct risk and feedback risk, which are obtained by mainly using coefficient of variation and coefficient of kurtosis.
Risk value can be used to measure the stability of providing services.
Simulation results show that the proposed model not only has high accuracy, but also resists effectively collusive attacks and strategic malicious behaviors.
American Psychological Association (APA)
Gao, Yan& Dai, Zhiyong& Liu, Wenfen. 2015. Modeling Dynamic Trust and Risk Evaluation Based on High-Order Moments. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1074703
Modern Language Association (MLA)
Gao, Yan…[et al.]. Modeling Dynamic Trust and Risk Evaluation Based on High-Order Moments. Mathematical Problems in Engineering No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1074703
American Medical Association (AMA)
Gao, Yan& Dai, Zhiyong& Liu, Wenfen. Modeling Dynamic Trust and Risk Evaluation Based on High-Order Moments. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1074703
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074703