Camille Fayollas

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While designing interactive software, the use of a formal specification technique is of great help by providing non-ambiguous, complete and concise descriptions. The advantages of using such a formalism is widened if it is provided by formal analysis techniques that allow to prove properties about the design, thus giving an early verification to the(More)
Task models are a very powerful artefact describing users' goals and users' activity and contain numerous information extremely useful for designing usable interactive application. Indeed, task models is one of the very few means for ensuring effectiveness of the application i.e. that the application allows users to reach their goals and perform their(More)
Ensuring the effectiveness factor of usability consists in ensuring that the application allows users to reach their goals and perform their tasks. One of the few means for reaching this goal relies on task analysis and proving the compatibility between the interactive application and its task models. Synergistic execution enables the validation of a system(More)