12/4/2013 1 Course Review CS 7450 - Information Visualization December 4, 2013 John Stasko Topic Notes Syllabus Review Fall 2013 CS 7450 212/4/2013 2 Your Reflections • What were most interesting topics? • What are key research challenges? • What should be done in the future? Fall 2013 CS 7450 3 Research Directions • Data issues Scale Static versus dynamic Spatial versus nonspatial Nominal versus ordinal Structured versus nonstructured Time Varying quality Fall 2013 CS 7450 412/4/2013 3 Research Directions • Issues of cognition, perception, & reasoning How do humans solve problems with the aid of visuals? How can we leverage this knowledge to build better tools? Understand analytic tasks better How can visualization assist learning? Fall 2013 CS 7450 5 Research Directions • Issues of system design How to integrate computational analysis with visualization better Develop powerful new interaction paradigms Make visualizations engaging and easier to use/create (for the masses) Holy Grail: Automatic visualization design Fall 2013 CS 7450 612/4/2013 4 Research Directions • Issues of evaluation What is the importance of aesthetics? Understand human perceptual and cognitive limitations How to measure the benefits compared to other analysis methods? What quantitative and qualitative measures of usability are important? How do we measure the information content, distortion, and loss in a visualization? What are the trade-offs between long, longitudinal studies and limited tests with more subjects? What mixture of domain knowledge and visualization knowledge is needed to design and develop effective tools? Fall 2013 CS 7450 7 Research Directions • Hardware issues Handhelds to display walls GPU benefits New interaction devices Fall 2013 CS 7450 812/4/2013 5 Research Directions • Issues of applications How to best collaborate with domain experts to help solve their problems? What new domains can be addressed? Fall 2013 CS 7450 9 Promising Trends • Built-in best practices Banking to 45°, Tableau • Integrated support for geo-spatial analysis Learn from cartographers, Google maps • Integrated support for network analysis Vizster, Social Action, Ploceus • Integrated support for collaborative analysis Many Eyes, sense.us Fall 2013 CS 7450 1012/4/2013 6 Promising Trends • Custom analytical applications Spotfire, Qlikview • Illuminating predictive models Risk, uncertainty, opening the black box • Integrated data mining Friend not foe • Improved HCI devices Large, multi-touch displays Fall 2013 CS 7450 11 Visualization Zoo Fall 2013 CS 7450 12 Heer, Bostock & Ogievetsky CACM ‘10 Time series data Index line chart Stacked graph Small multiples Horizon graph Statistical distributions Stem-and-leaf plots Q-Q plots Scatter plot matrix Parallel coordinates Maps Flow map Choropleth map Graduated symbol map Cartograms Hierarchies Node-link diagrams Cartesian Radial (dendogram) Indented tree layout Adjacency diagrams Icicle plot SunBurst Enclosure diagrams Treemap Circle packing Networks Force-directed Arc diagram Matrix views http://queue.acm.org/detail.cfm?id=180512812/4/2013 7 Final Exam • Monday, this room, 2:50pm • Short answer Explain something Identify something Critique something … Fall 2013 CS 7450 13 Fall 2013 CS 7450 14 Final Project • Demos tomorrow at my lab Be on time, respect the 15 minutes Bring 2 copies of a summary sheet (member names, paragraph overview, image) • Video due on Tuesday @ 5pm Do a nice job Give me the file (thumbdrive, web, …) Will put them all on a t-square page • Questions? Visitor from AJC12/4/2013 8 Team Survey • Include yourself being rated • 1 (bad) – 5 (good) • Only I will read these Fall 2013 CS 7450 15 Grades • HWs • Project • Participation • Final exam • Items will be posted in t-square later next week Fall 2013 CS 7450 1612/4/2013 9 Fall 2013 CS 7450 17 Course Survey • Take a few minutes to complete • Please remember to complete GT one too! Link from homepage of t-square Potential Projects • If you’re interested in pursuing research in this area, let me know CiteVis++ Sports data vis Emory AIDS project … Fall 2013 CS 7450 1812/4/2013 10 InfoVis Gospel • Hopefully, course has increased your awareness of topic and you can become an advocate • Keep me posted as your use these ideas in your career Fall 2013 CS 7450
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