A service trust evaluation method based on service quality and reputation

Abstract

The invention provides a method for assessing the trust degree of Web services based on QoS and reputation, the method includes a service trust degree assessment model, and the direct trust degree, recommended trust degree, and service provider trust degree included in the service comprehensive trust degree calculation method. This method takes the service requester's demand for candidate services in service selection as input, conducts demand analysis, integrates QoS and user's historical trust in the service in the direct trust degree, and adds a time decay factor to gradually weaken the historical trust to the direct trust. Influenced by degree, improve the reliability of direct trust degree; Introduce the concept of recommender reputation in recommendation trust degree, establish a trust evaluation mechanism between users, and then divide recommendation trust into two types: acquaintance recommendation trust and stranger recommendation trust, so that The evaluation of recommendation trust is more complete and accurate, and finally the credibility of each candidate service is evaluated and ranked in order to provide decision-making basis for service selection.

Description

technical field [0001] The present invention provides a Web service trust degree evaluation method based on Quality of Service (Quality of Service, QoS) and reputation, which mainly solves the problem of how to conduct reasonable and accurate credibility evaluation for candidate services involved in Web service selection, and belongs to Web service selection field. Background technique [0002] Webservice is a distributed computing technology for building a service-oriented architecture (Service-Oriented Architecture, SOA), which has the characteristics of openness, platform independence, loose coupling and high integrability. The emergence of Web service technology under the Internet environment has created unprecedented opportunities for establishing a more flexible and diverse collaborative relationship among organizations. Today, with the rapid increase of service resources, a large number of services with the same or similar functions have emerged. However, for service...

AI Technical Summary

Problems solved by technology

In view of the fact that the existing service credibility evaluation method cannot better integrate trust information from multiple sources, and there are problems of accuracy and credibility in the service trust evaluation, the present invention analyzes the candidate service from the perspective of the service requester. Trust the source, establish a reputation evaluation mechanism between services, improve the accuracy of recommended trust evaluation, and also consider the accuracy and credibility of other trust evaluations

Images