Trust evaluation is becoming a more and more active and critical area mainly for guaranteeing secure interoperation between communicating systems. One of the basic parameters used to evaluate the trust in a remote entity (user or system) is the previous experience, i.e. the interactions already performed between the truster and the trustee. However the monitoring of the trustee behavior and the analysis of the collected data and events are not an easy task. First of all, we need to define relevant patterns that describe the desired behaviors to be monitored and check them using a dedicated tool.
Within this paper, we extended an open source tool (MMT ) to monitor users’ behavior and define behavior patterns using temporal properties. We also design some evaluation strategies and illustrate the whole approach by the application to a real case study related to a collaborative programming project.
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