1. Jun Wang Abhishek Agrawal Anil Bazaz Supriya Angle
Envision
Jun Wang
Abhishek Agrawal
Anil Bazaz
Supriya Angle

2. Problems Based on old Java version of Envision
Connect it to MARIAN backend
Show me the overview!!
Show me the insight of data!!!

3. Blank Screen Panics User!!
Show Me the Overview
Blank Screen Panics User!!
Where is my data??

5. Trade-off Overview + Detail Focus + Context Large Overview
(Remove Scrollbar)
Small Overview
(Context)
Showing icons inside cluster
- Showing detail in result window
Zooming
- Maintaining Link Relations

8. Hammer / Chainsaw
Data
Screen
Data
Screen

9. Show me the DATA !!! Cluster “indicating” Cluster “SHOWING”
34 documents
Cluster “indicating”
34 document

10. Showing Icons in Cluster
A nice algorithm has been developed to provide the function we need….
Scales pretty well… a small icon can contain 100+ documents inside…
This number can be even raised.
Each icon has its own attributes: color, shape, document, selection, everything.

11. Show Icon Algorithm
11 layers, 433 small icons can be drawn inside an ellipse of radius (191, 188).
3 layers, 51 icons inside (80, 50)

12. Variable-Width Algorithm
To use screen space more efficiently
Final algorithm decides width, based on how many documents are inside the largest icon in certain column/row
Icon areas are proportional to the number of documents
All boundary conditions are carefully considered

13. Table on Axis Aggregate Several attribute values single value
How can we present this information beautifully to facilitate user?
Table with tooltip over cells
Plain Text vs. Combobox

14. Remove Grid Line Real “people” don’t like grid on the matrix…
Remove them totally from our way!!

15. Work Is NEVER Ending…

16. Future Work Connect to multiple backend servers.
- Z39.50 protocol, OAI protocol & other general protocols…
When scale is too high, zooming is necessary. Then we need context too to guide users.
Mouse hover over icon to show icon details.
Interface is not well refined.

17. Questions? Suggestions?
Thank You!!