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Information Visualization Applications and Implications

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Books, films,videos, photos, maps,manuscripts, audio recordings ... Book, film, video, manuscript, audio recording. Patent, scientific article, treaty, contract ... – PowerPoint PPT presentation

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Title: Information Visualization Applications and Implications


1
Information Visualization Applications and
Implications
When there is no vision, the people perish
Ming Bi 05/22/2001
2
Information Visualization
  • Definition of Information visualization
  • Information visualization is the use of computer
    supported interactive visual representation of
    abstract data to amplify cognition
  • Goals
  • Discovery
  • Decision making
  • Explanation

3
Information Visualization
  • Mantra for Designers
  • Overview first, zoom and filter, then
    details-on-demand
  • Other tasks need to be supported
  • Extraction of objects for further examination or
    consultation with others
  • History keeping to record the users actions and
    results

4
List of Applications
  • Statistical and Categorical Data
  • Digital Libraries
  • Personal Services
  • Complex Documents
  • Histories
  • Classifications
  • Networks

5
Statistical and Categorical Data
  • Census, health, labor, economic, and other
    demographic data
  • Stocks, bonds, bank accounts, currency trading
  • Sales by region, product, salesperson, customer
  • Manufacturing process supervision
  • Drug, chemical, material attributes

6
Statistical and Categorical Data
  • Information visualization provides significant
    advantages that complement spreadsheets,
    statistical packages and data mining tools
  • Table, Scatterplots, Parallel coordinates
  • Users seek to discover specific objects that best
    match their requirements
  • Users seek to discover understand patterns

7
Statistical and Categorical Data
8
Statistical and Categorical Data
9
Digital Library
  • Books, films,videos, photos, maps,manuscripts,
    audio recordings
  • Patents, scientific journal articles, legal
    citations and statutes
  • Newspaper and magazine articles
  • Scientific and social science data sets
  • World Wide Web pages

10
Digital Library
  • Query preview indicate the cardinality of the
    result set
  • Mapping multidimensional document space into 2D
    or 3D
  • Previews are nicely complemented by overviews
    that are constructed by representing each object
    in the collection in a 2D display
  • similar items may or may not be closed to each
    other

11
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12
Personal Services
  • Travel info on airlines, trains,hotels,restaurants
  • Classified ads for home, real estate, jobs
  • Consumer comparisons of cars, TVs
  • Sports statistics
  • Entertainment events
  • Challenge
  • Complex criteria
  • Flexible search strategies and easy relaxation of
    queries

13
Complex Documents
  • Biography, resume, annual report
  • Book, film, video, manuscript, audio recording
  • Patent, scientific article, treaty, contract
  • Software module, data structure
  • tasks are varied previews, key words search,
    content compare

14
Histories
  • Exploration of temporal data
  • Medical patient histories
  • Student, sales client, legal case, employment
    histories
  • Economic trends, stocks
  • Project management, Gantt charts, PERT-CPM

15
Classifications
  • Classification using hierarchies to help organize
    complex information and reduce the amount of
    information people need to cope with at any time
  • Library subject headings, animal species, patent
    listings
  • Tables of contents, organization chart, family
    trees
  • Tree structures
  • hard disk data directories
  • node-link diagram, cone trees, tree maps using
    space-filling,
  • hyperbolic trees, CHEOPS
  • Budgets, sales

16
Classifications
  • Classifications vary greatly in size and
    complexity
  • Flexible visualization tools are needed and task
    must deal with
  • Topology
  • Nodes with names
  • Node with names and attributes

17
Networks
  • Network is necessary because tree is inadequate
    to capture all relationships among objects.
  • Telecommunications connections and usage
  • Highways, pipelines, electronic circuits
  • Scientific articles or legal citations
  • Social structures, organizational relationships
  • World Wide Web
  • Challenge elaborate topology, Large number of
    nodes, complexity of the tasks

18
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19
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20
Limitation and Cautions
  • Limitation Only for sighted people
  • Sonification or audiolization
  • Cautions
  • Many users may not be visual oriented
  • People may misuse it and come to wrong
    conclusions
  • Incompatible formats for data, nonstandard
    widgets and inconsistent terminology--can be
    overcome

21
Implications
  • Information visualization will be popular tools
    for most computer users
  • Personal services are likely to be the largest
    area of commercial applications
  • The most likely profession for substantial change
    is medicine
  • Provide more thorough and appropriate sets of
    precedents and statute for legal research

22
Implications
  • Financial analysts use dynamical of screen for
    more visual display and dynamical query to help
    filter out unwanted data
  • Scientific users become more sophisticated in
    their approach to research
  • Information visualization tools will be
    components of other application software like
    word processor

23
Two-vs. Three-Dimensional Presentations
  • Advantages of 2D presentations
  • 2D screen
  • visual perception based on seeing 2D projection
    of 3D world
  • user are familiar with paper presentation
  • 2D presentations are faster on computer
  • 2D presentation are simpler
  • tree structure more useful in 2D versions

24
Two-vs. Three-Dimensional Presentations
  • Advantages of 3D presentations
  • 3D real world and experience based on movement in
    3D
  • development of hardware/software will overcome
    the technology difficult for 3D
  • 3D pointing devices and better control widget
    will enable smooth navigation without
    disorientation
  • more information can be displayed on the screen
  • network data structure more effective in 3D
    versions
  • Compromiser there is room for both

25
Two-vs. Three-Dimensional Presentations
  • Proposed 3D applications
  • Immersive Virtual Environment
  • Semi-immersive Virtual Environment
  • Desktop 3D for 3D worlds
  • Desktop 3D for artificial worlds
  • Desktop 3D for novel information spaces
  • Chartjunk 3D

26
OverviewDetail vs.FocusContext
  • OverviewDetail strategy
  • Integrate overview and details is cognitively for
    some viewers
  • zoom factor-- the ratio of length of the diagonal
    in the detail view to the length of the diagonal
    in the field view box 5-15
  • support zoom factors of 100 or 1000 when applied
    repeatedly
  • Focuscontext
  • Fisheye views, Bifocal lens Greater potential
    for disorientation
  • zoom factor-- the ratio of an objects diagonal
    in the focus area to the objects diagonal in the
    context area 2-5

27
Reengineering the Desktop
  • Room strategy--workspace or virtual desktop
  • Elastic Windows
  • 3D worlds--Webbook
  • Personal Role Management strategy
  • Coping with Multiple-valued attributes
  • represented as multiple items on a display
  • Understanding Human perception

28
Conclusion
29
  • Information Visualization is part of new media
  • brings increased resources to the human in the
    form of perceptual processing and expanded
    working memeory
  • reduce the search for information
  • enhance the recognition of patterns
  • enables the use of perceptual inference and
    perceptual monitoring
  • itself is manipulable and interactive

30
Future Trends
  • Entering the mainstream
  • Moving towards applications
  • Integrated packages
  • Networks
  • Educational Infrastructure

31
Unsolved problems
  • New metaphors/new visualizations
  • Bringing science to the craft
  • The visualization of cyberspace
  • Collaborative visualization
  • A characterization of Information visualization
    down to the operator level
  • The perceptual analysis of dynamic information
    display
  • Advances in the science of dynamic spatial
    cognition
  • A theory of knowledge crystallization
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