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Usability Evaluation of Digital Library
Abstract
This chapter introduces the concept of usability and provides examples of how usability has been used in digital library evaluations. Usability is a user-centered evaluation and has a theoretical base in human-computer interaction. The most concise definition of usability is “fit for use.” The dimensions of usability may also include usefulness, usableness, ease of use, effectiveness, efficiency, satisfaction, learnability, memorability, and error tolerant. The common methods of usability evaluation are described in this chapter, including formal usability testing, usability inspection, card sort, category membership expectation, focus groups, questionnaires, think aloud, analysis of site usage logs, cognitive walkthrough, heuristic evaluation, claims analysis, concept-based analysis of surface and structural misfits (CASSM), paper prototyping, and field study. Some evaluations employed one method; some used a combination of methods. There is a need for more empirical studies in order to understand users’ needs. Culturability is an interesting area to explore.
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