Validação de um método para identificação de problemas de usabilidade a partir de diagramas UML

Aiming to take the usability evaluation of interactive systems to the early stages of the software development process we propose a method to the model-based usability evaluation. In order to cover subjective aspects and evaluate models used in the real world we propose a non-automatic method to be applied on software engineering models: guidelines to model-based usability evaluation. To refine the proposed method, we carried out some experiments combining different evaluation methods and models. After the method definition and refinement, we carried out an experiment to validate our proposal. From the results of this experiment we may say that we reach a set of guidelines to anticipate the usability evaluation using models. The validation process is presented in this paper.