Information Visualization

1
Information Visualization

• Chapter 14.4 14.5

2
Advanced Filtering and Searching Interfaces
Complex Boolean queries

• Syntax difficult for the uninitiated user
• Differences between English language meaning and
  Boolean meaning
• English "and" --gt Boolean ? "or
• English "or" --gt Boolean "xor
• Visual metaphors become clumsy as complexity
  increases
• Filter/Flow (http//www.open-video.org/details.php
  ?videoid710)

3
Advanced Filtering and Searching Interfaces
Dynamic Queries

• "Direct manipulation" queries
• Only subset of full Boolean power
• For non-local data, use Query Previews

4
Advanced Filtering and Searching Interfaces

• Automatic gathering/filtering
• Based on keywords or saved queries
• Faceted metadata search
• Hierarchical browsing plus keywords with result
  previews

5
Advanced Filtering and Searching Interfaces

• Collaborative filtering
• "Others also bought/read/chose ..." (based on
  other users actions)
• "You may also like ..." (system generated)
• Visual Searches
• Maps, calendar layout, plane seats chart, etc.
• When visual representation is not "obvious", use
  abstract information visualization techniques

6
Information Visualization Overview

• Abstract data no relationship to physical
  characteristics
• Leverage remarkable human visual perceptual
  system
• Scan, recognize, recall, detect subtle
  differences
• Static display techniques (www.tufte.com)
• Dynamic display techniques
• Get over novelty, instead integrate
• Overview, zoom and filter, details on demand

7
Information Visualization 7 Popular Data Types

• 1-dimensional (linear)
• 2-dimensional
• 3-dimensional
• Multi-dimensional (n-dimensional)
• Temporal
• Hierarchical
• Network

8
Information Visualization 7 Popular Tasks

• Overview
• Zoom
• Filter
• Details-on-demand
• Relate
• History
• Extract

9
Information Visualizaton 7 Challenges

• Import data
• Combine visual representations with textual
  labels
• See related information
• View large volumes of data
• Integrate data mining
• Collaborate with others
• Acheive universal usability