A Comprehensive and Unified Approach to Web Service Trust Evaluation Based on Uncertainty Methodology.

Junwei Zhang,Deyu Li

doi:10.3390/e24020243

Abstract

Web services have the advantage of being able to generate new value-added services based on existing services. To effectively compose Web services, the composition process necessitates that the services that will participate in a given composite service are more trustworthy than those that provide similar functionality. The trust mechanism appears to be a promising way for determining service selection and composition. Existing trust evaluation approaches do not take into account customer expectations. Based on fuzzy set theory and probability theory, this work proposes a unique Web service trust evaluation approach that is notable for its ability to provide personalized service selection based on customer expectations and preferences. The proposed approach defines trust as a fuzzy notion that is related to prior experiences and ratings, and expresses trust in two different forms. This work mainly solves two key issues in Web service trust architectures, bootstrapping trust for the newcomer services and deriving trust for composite services. The proposed approach combines the solutions to numerous issues in a natural way. The case study and approaches comparison demonstrate that the proposed approach is feasible.

Highlights

Many organizations deploy various applications for business management.Rather than developing new solutions in-house, these applications are frequently constructed by integrating components produced by outside firms [1,2,3]
The proposed approach combines the solutions to numerous issues in a natural way
The case study and approaches comparison demonstrate that the proposed approach is feasible

Summary

Introduction

Many organizations deploy various applications for business management.Rather than developing new solutions in-house, these applications are frequently constructed by integrating components produced by outside firms [1,2,3]. Web services are self-contained application components created on many platforms and advertised, hosted, and accessed via the Internet [4,5,6]. When two or more elementary Web services are combined, a new Web service is created that performs a complex composite task that no single elementary service can accomplish alone [7,8,9]. In this case, the new Web service that contains the elementary Web services is called the composite service, and these elementary

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