An Empirical Approach for the Evaluation of Voice User Interfaces
Valéria Farinazzo Martins, Martins Salvador, André Luiz Satoshi Kawamoto, João Soares de Oliveira Neto · InTech eBooks · 2010
The current knowledge on VUI comes from small contributions of research projects which propose an assessment for the systems developed in these projects, and attempt to generalize and make recommendations for the evaluation of VUIs, such as PARADISE, EAGLES and DISC (Walker et al., 1997; Gibbon & Moore, 1997;Dybkjaer & Bernsen, 2000).It is important to point out that developing VUI applications is very different from developing GUI applications.The differences include visibility, transience, bandwidth asymmetry, temporality and concurrency (Hunt;Walker, 2000).Hence, it is necessary to review the developing process of VUI applications based on an interface approach, aiming to adapt some peculiar characteristics, starting on non-functional requirements. Requirements of VUIGraphical User Interfaces (GUI) requirements can be, most of the time, also considered for VUI applications, since usability and feedback must be considered for every humanmachine interface.However, there are specific requirements for VUI applications.These requirements come from some basic differences that must be pointed out, especially due to the transient attribute of the voice -while graphical interfaces are persistent.Thus, nonfunctional requirements were classified as: requirements related to the representation of the information, and requirements related to the data input.