Information Technology Reference
In-Depth Information
MIYOSHI Yasunaga
TOKUGAWA Ieyas
Person dependency
Person dependency
(bidirectional)
Strength of person
dependency
ODA Nobunaga
Importance of person 1:
attraction => size of node
Importance of person 2:
Ratio of number of
inlink and outlink=> color
Figure 8.4.
Visualization of connection between people.
6.1.1 Visualizing Multiple Years and Viewpoints
Users can incrementally add new TimeSlices on the timeline side-by-side
to compare different years (as in Figure 8.3, 1573 and 1615) by clicking
the timeline. They can also add TimeSlices to represent different
viewpoints at the top and bottom (in Figure 8.3, “battle” and “gift”) to
compare multiple viewpoints. Common people in different viewpoints are
represented as light green.
Multiple TimeSlices visualize networks of people related to different
viewpoints and with different timings. They arrange the same nodes in
different TimeSlices at the same positions. The positions of nodes on
different TimeSlices can be synchronized completely with one another
even if users drag a node. For this purpose, we extend the method
proposed by Diehl et al. [14]. The system constructs one aggregated
network from all visible nodes in the specified TimeSlices, and then
calculates the positions of all visible nodes. Each TimeSlice only displays
the necessary nodes for a selected year and a specified viewpoint.
TimeSlices independently calculate the positions of nodes in the different
viewpoints except for the same person's nodes.
Interactions such as selecting and highlighting nodes are propagated to
other TimeSlices. Panning and zooming operations are also propagated to
other TimeSlices. These mechanisms help users to compare multiple
situations.
To compare people and clusters of people in different TimeSlices in
detail, our framework uses mechanisms for a parallel view [6] in a 3D
environment as shown in Figure 8.5. This enables us to seamlessly change
the normal 3D view to a parallel view and to explore information
interactively through different aspects using multiple views. This enables
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