Data-driven interaction techniques for improving navigation of educational videos

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With an unprecedented scale of learners watching educational videos on online platforms such as MOOCs and YouTube, there is an opportunity to incorporate data generated from their interactions into the design of novel video interaction techniques. Interaction data has the potential to help not only instructors to improve their videos, but also to enrich the learning experience of educational video watchers. This paper explores the design space of data-driven interaction techniques for educational video navigation. We introduce a set of techniques that augment existing video interface widgets, including: a 2D video timeline with an embedded visualization of collective navigation traces; dynamic and non-linear timeline scrubbing; data-enhanced transcript search and keyword summary; automatic display of relevant still frames next to the video; and a visual summary representing points with high learner activity. To evaluate the feasibility of the techniques, we ran a laboratory user study with simulated learning tasks. Participants rated watching lecture videos with interaction data to be efficient and useful in completing the tasks. However, no significant differences were found in task performance, suggesting that interaction data may not always align with moment-by-moment information needs during the tasks.
Publisher
ACM SIGCHI and SIGGRAPH
Issue Date
2014-10-07
Language
English
Citation

27th Annual ACM Symposium on User Interface Software and Technology, UIST 2014, pp.563 - 572

DOI
10.1145/2642918.2647389
URI
http://hdl.handle.net/10203/222579
Appears in Collection
CS-Conference Papers(학술회의논문)
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