geovisualization for constructing and sharing concepts alan m. maceachren, mark gahegan, & bill...
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Geovisualization for Constructing and Sharing
Concepts
Alan M. MacEachren, Mark Gahegan, & Bill Pike
GeoVISTA CenterGeography, Penn [email protected]
www.geovista.psu.edu
This work is supported by NSF (BCS-9978052, BCS-0113030, BCS-0219025) and the U.S.
Geological Survey
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Outline
introduction background
HERO (human-environment regional observatory)
concepts and their visual representation
HERO geocollaboratory visually-enabled concept building
& sharing discussion: where next
www.geovista.psu.edu
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Introduction scientific knowledge
science is dynamic scientific concepts change and evolve concepts are situated … in place, in time, in
tasks, in knowledge schemata, in paradigms …thus, static concepts (and ontologies and
knowledge maps) will produce static science we need methods to support dynamic and
situated concept development, sharing, and application
… our approach: visual representation, thinking, and collaboration methods
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Background: HERO (human-environment regional
observatory)
conceptual and technological infrastructure to support long-term study of local implications of global environmental change
one goal support for defining and applying concepts
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prototypical conceptvulnerability as a flexible
concept
Adaptive Capacity
Exposure
Sensitivity
Vulnerability
Assessment method
Vulnerability
Sensitivity C
Sensitivity B
Sensitivity A
Sensitivity A
Sensitivity C
Vulnerability
Vulnerability
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Background: concepts and their visual
representation/exploration information visualization
representing and exploring hierarchies
depicting categorical information diagrammatic reasoning
visual languages for group learning spatial annotation for shared
decisions spatialization exploratory geovisualization
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representing/exploring concepts: InfoVis
representing and exploring hierarchies
string theory landscape
source: Chen and Kuljis, 2003
job vacancies by region
source: Fluit, Sabou, van Harmelen, 2002
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representing/exploring concepts: diagrams
visual languages for group learning
inputtexta b c
drawing
Belvedere – Suthers, 1999
conceptsprinciple
theory
hypothesisclaim
report
unspecified
relationssupports
explains
and
conflicts
justifies
undercuts
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visual languages for group learning
spatial annotationfor shared decisions
inputtexta b c
drawing
Belvedere – Suthers, 1999
conceptsprinciple
theory
hypothesisclaim
report
unspecified
relationssupports
explains
and
conflicts
justifies
undercuts
Argumentation maps: GIS-based
discussion support for online planning
Rinner, 2001
representing/exploring concepts: diagrams
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representing/exploring concepts: spatialization
source: Fabrikant & Skupin, in press
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representing/exploring concepts: geovisualization
link graph … dynamically linked to … mapClearfieldClearfield ClearfieldClearfield
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HERO geocollaboratory
collaboratory overview electronic notebook/knowledge
portal
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HERO: geocollaboratory
a collaboratory is a: “... center without walls, in which the nation’s researchers can perform research without regard to geographical location – interacting with colleagues, accessing instrumentation, sharing data and computational resources, and accessing infor-mation from digital libraries” Cerf, et. al, NRC, 1993
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HERO: collaboratory
supporting both synchronous and asynchronous joint work
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HERO: collaboratorye-notebook
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HERO: collaboratory
what does a geographic e-notebook look like?
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HERO: elements in knowledge portal
Tools• GeoVISTA Studio applets• Web services
Files• Data• Images• Articles
Tasks• Experiment storyboards• Workflow diagrams
People• Individual scientists • Research groups• Domain communities
Concepts• Hypotheses• Categories
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Visually-enabled concept building, sharing, and
application concepts to data and back
again visualizing structure in
scientific discourse concept graphing & acquisition
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concepts to data and back again
knowledge mgt for collaborative science
instantiation
conceptualization
representation
capture
comparison
• ontology description language• meta-ontologies• concept graphs
• web interface• diagramming tools
• concept similarity measures• workflow discovery• exploratory visualization
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concepts to data and back again
what concepts do we already have?
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concepts to data and back againwhat concepts will be in the data?
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concepts to data and back again
g
b
h
a fc e
ontological conceptualization
exploration of data to be analyzed
visual program of analysis sequence
resulting map overlay
operationalized concepts
d
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visualizing structure in discourse
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visualizing structure in discourse
Delphi discourse structure – concept development
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visualizing structure in discourse
demographics
governance
development
climate trendsclimate trends
Delphi discourse structure – semantic network
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concept graphing
interface to knowledge management
ontologiescreate from
scratchfrom
existing ontologies
editbrowse
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HERO: knowledge portal
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CODEX: a prototype knowledge management
system
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Discussion
formalizing this approach extend concept visualization visual support for group
thinking empirical validation and
extension through the HERO living laboratory
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challenges for collaborative science infrastructure
supporting situated work practices
overcoming resistance to introspection
relaxing domain constraints