Envision

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Envision

• Jun Wang
• Abhishek Agrawal
• Anil Bazaz
• Supriya Angle

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Problems

• Based on old Java version of Envision
• Connect it to MARIAN backend
• Show me the overview!!
• Show me the insight of data!!!

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Show Me the Overview
Blank Screen Panics User!!

• Where is my data??

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Trade-off
Overview Detail
Focus Context

• Large Overview
• (Remove Scrollbar)

• Small Overview
• (Context)

• Showing icons inside cluster
• - Showing detail in result window

• Zooming
• - Maintaining Link Relations

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Hammer / Chainsaw
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Show me the DATA !!!
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Showing Icons in Cluster

• A nice algorithm has been developed to provide
  the function we need.
• Scales pretty well a small icon can contain 100
  documents inside
• This number can be even raised.
• Each icon has its own attributes color, shape,
  document, selection, everything.

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Show Icon Algorithm
11 layers, 433 small icons can be drawn inside an
ellipse of radius (191, 188).
3 layers, 51 icons inside (80, 50)
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Variable-Width Algorithm

• To use screen space more efficiently
• Final algorithm decides width, based on how many
  documents are inside the largest icon in certain
  column/row
• Icon areas are proportional to the number of
  documents
• All boundary conditions are carefully considered

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Table on Axis

• Aggregate
• Several attribute values single value
  
• How can we present this information beautifully
  to facilitate user?
• Table with tooltip over cells
• Plain Text vs. Combobox

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Remove Grid Line

• Real people dont like grid on the matrix
• Remove them totally from our way!!

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Work Is NEVER Ending
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Future Work

• Connect to multiple backend servers.
• - Z39.50 protocol, OAI protocol other general
  protocols
• When scale is too high, zooming is necessary.
  Then we need context too to guide users.
• Mouse hover over icon to show icon details.
• Interface is not well refined.

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Questions? Suggestions?
Thank You!!