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Information Workspaces

Explore the concepts of information workspaces and 3D visualization techniques to improve management and access to large information spaces. Learn about the strengths and weaknesses of Cone Trees, Perspective Wall, WebBook, and WebForager.

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Information Workspaces

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  1. Information Workspaces Hilary Browne and Jeff Carver November 16, 1999

  2. Information Workspaces • Intermediary place for info from infosphere • Goal to arrange information to decrease cost for completing tasks • Degree of interest based on locality of reference • More frequently used information is faster to locate

  3. Information Visualization Using 3D Interactive Animation Robertson, Card, and Mackinlay

  4. Goals of Info Visualizer • Use graphics to lower cost of: • finding information • accessing information • Augment traditional IR goals of precision and recall • reduce time-cost of finding info • increase amount of info user can handle

  5. Solution • Make workspace larger - rooms • Delegate work to agents - search • Use natural human interaction rates - cognitive coprocessor • Visualizations to use perceptual skills - cone tree, perspective wall

  6. Cone Trees • 3D technique for viewing hierarchical data • Animated context preserving browsing • rotation • Reduces occlusion with transparency • Handle wide aspect ratios

  7. Perspective Wall • 3D technique for viewing linear data • Focus+Context fisheye visualization • Animated context preserving browsing • smooth scrolling • stretching

  8. Strengths and Weaknesses • Strengths • Only need mouse and keyboard • Multiple visualization techniques • Weaknesses • Complicated to construct • Cone Trees - occlusion, wasted space • Perspective wall - fisheye distortion

  9. Favorite Sentence • “…we believe that the structure of information, the emerging technologies of 3D and interactive animation, and the human perceptual system can be effectively exploited to improve management of and access to large information spaces.”

  10. The WebBook and the WebForager: An Information Workspace for the World-Wide Web Card, Robertson, York

  11. Problems • One unit of interaction - page • Difficult to group pages for sensemaking tasks • Uniform, slow cost structure for page access

  12. Solutions • WebBook • Group logically connected pages • Multiple viewing techniques • WebForager • Virtual 3D workspace with 3-tiered cost structure • focus, immediate memory, tertiary storage • Cost structure is tunable to user’s needs

  13. Strengths and Weaknesses • Strengths • Useful application of 2 common metaphors • Weaknesses • Cost function relies on static pages • Occlusion • Side by side comparisions

  14. Favorite Sentence • “Just as animals forage for food and try to optimize their food rate of gain, users often seek strategies to optimize their information gain per unit time…”

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