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Slides from IEEE EuroVis 2011 on dynamic insets for providing context in graphs, such as social networks, geographic maps, and UML diagrams.
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Dynamic Insets for Context-Aware Graph
Navigation
Sohaib GhaniPurdue UniversityWest Lafayette, IN
USA
Nathalie RicheMicrosoft Research
Redmond, WAUSA
Niklas ElmqvistPurdue UniversityWest Lafayette, IN
USA
IEEE EuroVis 2011June 1-3, 2011 ▪ Bergen, Norway
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(realistic) graphs are big…
…but screens are small!
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The Case for Context-Aware Graph Navigation:What is outside the screen is just as important as whatis on it!
Source: sean dreilinger, Flickr
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Recent TrendUse the graph topology to
inform navigation
[Moscovich et al 2009]
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DEMO
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Outline
Motivation Dynamic Insets
Design Interaction
Evaluation Application Examples Conclusions & Future Work
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Dynamic Insets: Basic Idea
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Degree of Interest (DOI)
Rank off-screen nodes Show N nodes with highest DOI in
inset DOI functions
Neighbors (DOI = 1) Neighbors divided by distance
(DOI=1/d) GPS: nearby gas stations Airline: ticket price, travel time, #stops,
etc Social network: graph metrics
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Flipping Insets
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Drag-to-Fan
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Distance Visualization
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Evaluation (1)
Participants: 12 Techniques: 2
BG – Bring & Go [Moscovich et al 2009] DI – Dynamic Insets
Tasks: 3 Count neighbors Close context Distant context
Densities: 2 (next)
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Tasks (1)
Sparse Dense
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Results (1)
RM-ANOVA, p < .05
Close Distant Count
BG
DI
BG DI
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Evaluation (2)
Follow-up qualitative evaluation Usability and scalability of DI
Two scenarios Geographic maps (road networks) Social network (AVI co-authorship)
Participants: 6 Tasks: 20 graph-related (Lee et al
2006) Duration: 30 (map) + 30 (soc)
minutes
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Example 1: Road Networks
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Example 2: Social Network
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Results (2)
Efficiency Enjoyability Ease of use Visual clutter Aids mental map
Context utility Use in daily work?
0
0.5
1
1.5
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2.5
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3.5
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4.5
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GeoMap SocNet
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Example 3: UML Editor
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Conclusions
Dynamic insets provide context-aware graph navigation Insets show destination of edges leaving
border of screen Design parameters include DOI
functions, layout, occlusion Applications: map, networks, UML,
etc User studies confirm usefulness
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Turn left onto I-94W
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Thank You!
Contact Information:Sohaib GhaniSchool of Electrical & Computer EngineeringPurdue UniversityWest Lafayette, IN, USA
E-mail: [email protected]
http://engineering.purdue.edu/pivot/
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