An Exploratory Search Method for Presentation Contents based on User Browsing Behavior

MOOC is a crucial platform for improving education; students are able to browse various educational presentation contents through the Web. Any single presentation content can only cover a small fraction of knowledge in a specific domain, and thus offers a limited depth of information. Students then have to go through various presentation contents, but this would be time-consuming and difficult to explore. Therefore, we propose a novel exploratory search tool for presentation contents based on a meaningfully structured presentation by using slides, called an interactive poster. The interactive poster places textual and graphic elements of slides in a structural layout with a zooming user interface by semantically analyzing the slide structure. Through this, our exploratory search can support students interactively browsing an interactive poster with their operations, for retrieving and navigating information from other presentation contents maps students’ specific needs by considering the students’ browsing behavior on the structure of the interactive poster. In this paper, we discuss two types of exploratory search, (1) topic focused searching based on well-matched browsing behavior that enables users obtain details of specific topics; and (2) exploratory browsing based on distributed browsing behavior that enables the users find various relevant information on topics of interest.