Data-assisted instructional video revision via course-level exploratory video retention analysis

Abstract

Since teachers are not physically present in an online class, instructional video is the major carrier of course contents in an online learning environment. This paper aims to investigate how course-level exploratory video retention analysis can be used for identifying moments with abnormal watching behaviors and revising videos for a higher video retention. We have empirically evaluated the effectiveness of video analysis and revisions, based on evaluating retentions of revised videos.