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Simplifying Network Visualizations with Motif Glyphs

Simplifying Network Visualizations with Motif Glyphs. Cody Dunne and Ben Shneiderman {cdunne, ben}@ cs.umd.edu 29 th Annual Human-Computer Interaction Lab Symposium, May 22–23, 2011 College Park, MD. Network Analysis is Hard. Who Uses Network Analysis. So what can we do?. Better Layouts.

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Simplifying Network Visualizations with Motif Glyphs

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  1. Simplifying Network Visualizations with Motif Glyphs Cody Dunne and Ben Shneiderman {cdunne, ben}@cs.umd.edu 29thAnnual Human-Computer Interaction Lab Symposium, May 22–23, 2011 College Park, MD

  2. Network Analysis is Hard

  3. Who Uses Network Analysis

  4. So what can we do?

  5. Better Layouts Alternate Visualizations Gove et al, 2011; Henry & Fekete, 2006; Dunne et al, 2012; Freireet al, 2010; Wattenberg, 2006 Hachul& Jünger, 2006 Graph Summarization Navlakha et al, 2008

  6. Lostpedia articles Observations 1: There are repeating patterns in networks (motifs) 2: Motifs often dominate the visualization 3: Motifs members can be functionally equivalent

  7. Our approach: Motif Simplification to reduce visualization complexity

  8. Motif Simplification Fan Motif 2-Parallel Motif

  9. Lostpedia articles

  10. Lostpedia articles

  11. Glyph Design Guidelines • Representative: topology, count& attributes • Easily distinguishable • Easily comparable • Allow overlaps

  12. Glyph Design: Fan

  13. Glyph Design: Parallel

  14. Interactivity Fan motif: 133 leaf vertices with head vertex “Theory”

  15. Voson Web Crawl

  16. Voson Web Crawl

  17. Voson Web Crawl

  18. Voson Web Crawl

  19. Voson Web Crawl

  20. Voson Web Crawl

  21. Voson Web Crawl

  22. Implemented in NodeXL

  23. User Impressions “I’m overwhelmed, … this is like one of those vision tests at the eye doctor” “Now I can see the central pages…[and] pairwise connections”

  24. Discussion Motif simplification effective for • Reducing complexity • Understanding larger relationships However • Frequent motifs may not be covered • Glyph design has tradeoffs Details & algorithms in Tech Report

  25. Take Away Messages Motif simplificationreduces the complexity of network visualizations. Freeand open source next month in NodeXL: http://nodexl.codeplex.com/ http://www.cs.umd.edu/hcil/motifs/ Thanks to: Social Media Research Foundation Connected Action Consulting Group

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