Usability Evaluation of Artificial Intelligence-Based Voice Assistants: The Case of Amazon Alexa

Currently, the use of voice-assistants has been on the rise, but a user-centric usability evaluation of these devices is a must for ensuring their success. System Usability Scale (SUS) is one such popular usability instrument in a Graphical User Interface (GUI) scenario. However, there are certain f...

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Vydané v:SN computer science Ročník 2; číslo 1; s. 28
Hlavní autori: Zwakman, Dilawar Shah, Pal, Debajyoti, Arpnikanondt, Chonlameth
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Singapore Springer Singapore 01.02.2021
Springer Nature B.V
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ISSN:2662-995X, 2661-8907, 2661-8907
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Shrnutí:Currently, the use of voice-assistants has been on the rise, but a user-centric usability evaluation of these devices is a must for ensuring their success. System Usability Scale (SUS) is one such popular usability instrument in a Graphical User Interface (GUI) scenario. However, there are certain fundamental differences between GUI and voice-based systems, which makes it uncertain regarding the suitability of SUS in a voice scenario. The present work has a twofold objective: to check the suitability of SUS for usability evaluation of voice-assistants and developing a subjective scale in line with SUS that considers the unique aspects of voice-based communication. We call this scale as the Voice Usability Scale (VUS). For fulfilling the objectives, a subjective test is conducted with 62 participants. An Exploratory Factor Analysis suggests that SUS has a number of drawbacks for measuring the voice usability. Moreover, in case of VUS, the most optimal factor structure identifies three main components: usability, affective, and recognizability and visibility. The current findings should provide an initial starting point to form a useful theoretical and practical basis for subjective usability assessment of voice-based systems.
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ISSN:2662-995X
2661-8907
2661-8907
DOI:10.1007/s42979-020-00424-4