1. Enhanced Dynamic Queries via Movable Filters
- Ken Fishkin, Maureen C. Stone

2. Magic Lens + Starfield Display (interactive filtering, zooming)
Movable Filter
(multiple simultaneous queries)

3. Advantages Boolean Querying
Magnification while maintaining global context
Multiple simultaneous views
Real Valued data
Missing Data

4. Magic Lens

5. Boolean querying F1 AND F2; F1 OR F2; NOT F1
Lens = ( Filter function, Composition Mode)
L1 = F2
L2 = (F1,AND)

6. Boolean Querying

7. Compound lens f( ) = (F1 AND F2) OR (F3 AND F4) Click through button
C1 = F1 AND F2
C2 = F3 AND F4
f( ) = C1 OR C2

8. Magnify and Call-out

9. Multiple Views

10. Real Valued Queries

11. Missing Data

12. HCI Metrics High Learnability High Throughput
Initial User Satisfaction
User Retention over time
Easy Error- recovery

13. Other methods No new concepts involved (as in Parallel co-ordinates)
No fiddling with the axes
(as in Star co-ordinates)
Limited amount of data
(as in Table Lens)
Missing Data

14. Thank You