With the advent of online education services such as iTunes U and SlideShare, students are able to access various presentation files from many universities for study purposes. However, self-learners retrieving such files still need support to decide which files are worth learning because it can be difficult to understand the context of each file. In this paper, we introduce a quick browsing system to help a user effectively decide whether a presentation content is appropriate for his/her specific learning needs. Our method provides context-based word clouds that summarize slide information to help the user visually understand the context of a presentation content. In our method, words important to the “presentation context,” that is, the relevant information on the slides, are first extracted based on components of the presentation content (i.e., intra-slide structure and inter-slide structure). Then the word cloud is generated by weighting the words within the presentation context for each slide. Finally, the word clouds are interactively presented with visual effects that reflect their semantic meanings.
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
Tel.: +1 703 830 6300
Fax: +1 703 830 2300 firstname.lastname@example.org
(Corporate matters and books only) IOS Press c/o Accucoms US, Inc.
For North America Sales and Customer Service
West Point Commons
Lansdale PA 19446
Tel.: +1 866 855 8967
Fax: +1 215 660 5042 email@example.com