Information Technology Reference
In-Depth Information
on the structure of an individual document. It is depicted in Figure 7.5. The pages
of a document are aligned vertically and represented in an abstracted manner to the
left (Fig. 7.5 a). The user's own bookmarks are visualized beside (Fig. 7.5 b). The
bookmarks of one or several members of the user's own group can be displayed
simultaneously and are visible to the right of one's own bookmarks (Fig. 7.5 c).
In addition to this sharing within a small group of users, the bookmarking data of
all users is automatically aggregated by the system. Anonymity is preserved as only
the positions and types of the bookmarks are taken into consideration, but not their
handwritten labels. An aggregated view visualizes data from all users indicating the
type, position and frequency of bookmarks by colored markings of different sizes
(Fig. 7.5 d). For instance, large red markers indicate that these passages are judged
particularly relevant by a large number of learners and green rectangles mark key
passages.
Fig. 7.5
A collaborative view for comparing the structuring of documents. It includes an abstracted
representation of the document (a), own bookmarks (b), bookmarks of other members of the user's
group (c) and an aggregated view of the bookmarks of all users (d)
