1. cs5984: Information Visualization Chris North
Document Collections 2
cs5984: Information Visualization
Chris North

2. Visualization Strategies
Cluster Maps
Keyword Query
Relationships
Reduced representation
User controlled layout

3. Cluster Maps
Kohonen
Themescapes

4. Galaxy of
News
Cluster
map
with
full text
Zooming

5. Keyword Query
Tilebars

6. VIBE Korfhage, http://www.pitt.edu/~korfhage/interfaces.html
Documents located between query keywords using spring model

7. VR-VIBE

8. Keyword Query Good: Bad: Reduces the browsing space
Map according to user’s interests
Bad:
What keywords do I use?
What about other related documents that don’t use these keywords?
No initial overview
Mega-hit, zero-hit problem

9. Relationships Show inter-relationships Matrix or Complete Graph Salton
Similarity measure between all pairs of docs
Threshold level
Salton

10. Variations
Docs + Paragraphs Themes

11. Citation Networks Butterfly Browser Mackinlay,… (PARC) Butterfly:
Left = refs
Right = citers
Yellow = #citers
Blue = visited
3d plot:
date,
Name,
# citers

13. Relationships Better for smaller, more detailed map
Scale up: Network visualization
Good:
Can see more complex relationships between/within documents
Can act like hyperlinks!
Bad:
Finding specific documents
Scale up difficult

14. Reduced Representation
Bederson, “Image browsing”
Rui, Anusha

15. User controlled layout
Card, “WebBook and Web Forager”
Mrinmayee, Ming

16. Next Week Tues: 3-D data Thurs: Workspaces Thanksgiving break
Kniss, “Interactive Volume Rendering with Direct Manip”
xueqi, mahesh
Thurs: Workspaces
Robertson, “Task Gallery”
supriya, varun
Upson, “AVS”
christa, jun
Thanksgiving break
Tues 27: Debates
Kobsa, “Empirical comparison of comm infovis systems”
kunal, zhiping

17. Upcoming Sched Tues: 3-D data Thurs: Workspaces Thanksgiving break
Tues 27: Debates, 2D vs 3D
Thurs 29: How (not) to lie with visualization
Dec: project presentations
Dec 7: CHI 2-pagers due, student posters due