CredibilityRank: um Arcabouço para Projeto e Avaliação de Modelos de Credibilidade de Serviços da Web∗

The popularization of Web applications has given rise to new services every day, demanding mechanisms to ensure the credibility of these services. Since now, little has been done to measure and understand the credibility of services on this complex Web environment, which itself is a major research challenge. From the challenges related to the task of assigning a credibility value to an online service in Web 2.0 applications, we propose a framework for the design, implementation and evaluation of credibility models. We call a credibility model a function capable of assigning a credibility value to any transaction of a service on the Web, considering different criteria of this service and its supplier. To validate the framework, we perform experiments using an actual dataset, from ∗CredibilityRank: a Framework for Design and Evaluation of Credibility Models in Web Applications . which we evaluated different credibility models using distinct types of information sources, and it allows to compare and evaluate these credibility models. The results show that the credibility framework has applicability and is capable to support decision of users of Web services.