DocumentCode :
46665
Title :
Automatic trust calculation for service-oriented systems
Author :
Bo Ye ; Nekovee, Maziar ; Pervez, Anjum ; Ghavami, Morteza
Author_Institution :
Fac. of Eng., Sci. & the Built Environ., London South Bank Univ., London, UK
Volume :
8
Issue :
3
fYear :
2014
fDate :
Jun-14
Firstpage :
134
Lastpage :
142
Abstract :
Among various service providers providing identical or similar services with varying quality of service, trust is essential for service consumers to find the right one. Manually assigning feedback costs much time and suffers from several drawbacks. Only automatic trust calculation is feasible for large-scale service-oriented applications. Therefore an automatic method of trust calculation is proposed. To make the calculation accurate, the Kalman filter is adopted to filter out malicious non-trust quality criterion (NTQC) values instead of malicious trust values. To offer higher detection accuracy, it is further improved by considering the relationship between NTQC values and variances. Since dishonest or inaccurate values can still influence trust values, the similarity between consumers is used to weight data from other consumers. As existing models only used the Euclidean function and ignored others, a collection of distance functions is modified to calculate the similarity. Finally, experiments are carried out to access the robustness of the proposed model. The results show that the improved algorithm can offer higher detection accuracy, and it was discovered that another equation outperformed the Euclidean function.
Keywords :
Kalman filters; Web services; quality of service; security of data; service-oriented architecture; Euclidean function; Kalman filter; NTQC; QoS criteria; Web services; automatic trust calculation method; distance function collection; feedback costs; large-scale service-oriented applications; nontrust quality criterion; quality of service; service consumers; service providers; service-oriented systems;
fLanguage :
English
Journal_Title :
Software, IET
Publisher :
iet
ISSN :
1751-8806
Type :
jour
DOI :
10.1049/iet-sen.2013.0056
Filename :
6829974
Link To Document :
بازگشت