Usability evaluation of a web-based ontology browser: the case of TSONT

Abstract

As the use of ontologies expands, their visualization is becoming increasingly important. In this study, anontology browser for visualizing the Trajectory Simulation ONTology (TSONT) was evaluated in terms of usability byconsidering its subdimensions, which are effectiveness, efficiency, and user satisfaction. The methodology employed inthis study for evaluating an ontology browser is reported along with the results of the evaluation. The TSONT browseris a tree-type ontology browser created to allow developers to visualize TSONT. Six flight simulation programmers withat least one year of experience participated in the study. The participants were given usability tasks and their voicesand eye movements were recorded using a sound recorder and eye-tracker, respectively. The results not only showedthat guidance and terminology influence the efficiency, effectiveness, and user satisfaction of the ontology browser, butthey also revealed important insights into the requisites of the general usability of ontologies, even in simple text-basedinterfaces.