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A Usability Assessment Metric for Ubiquitous Services: Quantification of the Interactivity Attribute in Inter-personal Services
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 Title & Authors
A Usability Assessment Metric for Ubiquitous Services: Quantification of the Interactivity Attribute in Inter-personal Services
Lee, Joo-Hwan; Song, Joo-Bong; Yun, Myung-Hwan;
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 Abstract
Objective: The main objective of this study is to propose a user-centered assessment metric for ubiquitous services. Background: As the ubiquitous era took off, the interactions between ubiquitous services and users have come to take an important position. It is essential to conceptualize a new assessment model that considers human-system interaction capability with a user-centered design perspective. Method: The evaluation model for the interactivity of ubiquitous service was approached from the concept of usability and inter-personality of services. As a validation study, suggested assessment metric was utilized to evaluate the u-Home service. Priority weighting of each assessment metric was derived using the quantification type-I analysis. Results: To evaluate interactivity, this study suggested a quantitative metric for user testing performed after classifying the interactivity characteristics to contextualization; ubiquity; user experience; and service capability. Conclusion: This study suggest the metric for the ubiquitous service that are experienced in real life, and introduced the concept of ubiquitous service interactivity. Application: The suggested evaluation metric can be used to evaluate interactivity level of ubiquitous service and identify the potential problem and usability requirements at the early stage of service development.
 Keywords
Ubiquitous service;Interactivity;User-Centered design;Usability evaluation method;
 Language
Korean
 Cited by
 References
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