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Võimalusi info viusualiseerimiseks ja süstematiseerimiseks.

Võimalusi info viusualiseerimiseks ja süstematiseerimiseks.



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    Visualiseerimine Visualiseerimine Presentation Transcript

    • Tools for Knowledge Construction and Visualisation
        • Martin Sillaots
        • 19 April 2006
    • Goal of presentation
      • To give overview of knowledge (information) construction and exploration methods
      • To give ideas how to improve effectiveness of learning (shorter learning time, deeper understanding of relations ...)
      • To collect additional ideas and feedback
    • Social-Constructivist learning theory
      • Knowledge is actively constructed by learner
      • Learning must be related with actual and meaningful content
      • Learning is more effective in collaboration with co-students
    • Construction
      • Seeing relations
      • Sorting
      • Seeing differences
      • Comparing
      • Systematising
      • Restructuring
    • Construction enables
      • Get overview of information
      • Browse or navigate in information
      • Focus on details
      • Select details
      • Change, order, create relations
        • To see details in a pig picture
    • Visualisation
      • Visualisation – define information with colour, size, position, relations
      • Why it is important to visualise information?
      • Students learning styles are different
      • People have strong need for visualisation of information
    • Learning styles
      • Visual – student like diagrams
      • Aural – student prefer listening
      • Reading /Writing – making notes
      • Kinesthetic – simulations and practice
      Perceptual preference by VARK Ref: http://www.vark-learn.com/
    • Why visualisation is important? Ref: http://www.essentialmindmapping.com/WhatIsMindMapping.php
    • Classification of methods
      • One-dimensional – text, list, timeline ...
      • Hierarchical – outlined list, tree, ...
      • Network – concept map ...
      • Two-dimensional – metaphor of map, matrix, ...
      • Three-dimensional
      • Multi-dimensional
      • Other metaphors – building, human body, outer space
    • 1-D
      • Text mural or lens
      • Tag or keyword cloud
      • Simple list
      • Time line*
      To see details and large picture
    • Mural for text presentation Ref: http://www.cc.gatech.edu/gvu/softviz/infoviz/information_mural.html
    • Text Mural or lens for search
    • Video DNA Ref: Dulce Ponceleon and Andreas Dieberger IBM Almaden Research Center
    • Tag or keyword cloud Bigger font = most popular topic Ref: http://www.tagcloud.com/
    • Hierarchical
      • Outline list
      • Tree
      • Hyperbolic tree*
      • Tree map*
      • Content map*
      Each node has a single parent node Sub-nodes can be hidden Details vs pig picture
    • Outline list Structure of Multimedia course Created with MS Project
    • Tree Ref: http://www.cs.umd.edu/hcil/biodiversity
    • Hyperbolic tree Ref: Jörg Walter Universität Bielefeld Ref: John Lamping, Ramana Rao, and Peter Pirolli Xerox Palo Alto Research Center
    • Hyperbolic tree examples
      • StarTree www.inxight.com/products/vizserver
      • Walrus - Gallery: Visualization & Navigation www.caida.org/tools/visualization/walrus/gallery1
      • BubbleBrowser www.flong.com/bubba
    • Hyperbolic tree tools
      • HyperTree www.kinase.com/tools/HyperTree.html based on Java2
      • StarTree www.inxight.com/products/vizserver commercial
      • Walrus - Graph Visualization Tool www.caida.org/tools/visualization/walrus based on Java3D and
      • Additional packages iv.slis.indiana.edu/sw/index.html
    • Tree map Usenet Hierarchies http://netscan.research.microsoft.com/treemap
    • Concept map Inspiration http://www.inspiration.com/ What if one node have more than one parent?
    • Network
      • Computer network topology
      • Concept map*
      • Gantt chart*
      • Arrow diagram (ADM)*
      • Precedence diagram (PDM)*
    • Visual Thesaurus (concept map) Ref: http://www.thinkmap.com/visualthesaurus.jsp
    • news.com Big Picture (concept map) http://news.com.com/The+Big+Picture/2030-12_3-5843390.html?tag=st.bp
    • Cmap (concept map) Ref: http://cmap.ihmc.us/
    • 2-D
      • Geographic maps - displaying data on map
      • Map metaphor (flour, city, fields)
      • Matrix
    • Geographical maps Population density
    • Map metaphor Colour = novelty or importance, size = popularity or capacity, position = relations Ref: hot.news.com
    • City metaphor Ref: Andreas Dieberger, Emory University
    • Matrix Ref: A Guide to the Project Management Body of Knowledge
    • 3-D and Multi-D
      • Table lenses
      • Multidimensional scaling
      • Items are described with three or more attributes
      • Usually presented on 2 – dimensional screen with multiple sliders
    • Table lenses Ref: www.inxight.com/products/sdks/tl
    • Explorea Ref: Kaipainen
    • Spotfire Ref: www.spotfire.com
    • Time-line*
      • Single time-line*
      • Gantt chart
      • Arrow diagram (ADM)
      • Precedence diagram (PDM)
    • Flash authoring system Ref: http://www.macromedia.com/
    • Gantt Chart Created with MS Project
    • PDM Chart Created with MS Project
    • Conclusion
      • Selection of tool and method depends on user preferences
      • Using of different tools make learning process more interesting and effective
      • Its probably not possible to integrate all methods (metaphors)
      • Preparation process is longer learning process shorter
      • Give students tasks to construct knowledge
        • The End