Authors: Hamdi Yahyaoui Sami Zhioua
Publish Date: 2012/09/23
Volume: 37, Issue: 2, Pages: 389-416
Abstract
We propose in this paper a new approach for bootstrapping trust of Web services in which the interactions of a Web service with a user are observed during a certain time frame The observations sequence is modeled as a Hidden Markov Model and matched against predefined trust patterns in order to assess the behavior of such Web service The predefined trust patterns are specifications of possible behaviors of Web services such as trusted malicious betraying oscillating and redemptive Based on the matching result an initial trust value is assigned to the Web service Our experimental results show that our approach enjoys good precision and recall values and provides a fair distribution of trust values Besides the proposed approach is applied on a dataset of realworld Web services A comparative study with published bootstrapping approaches shows a better bootstrapping success rate for our new approach
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