visualizing scholarly discourse in escience simon buckingham shum knowledge media institute open...
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Visualizing ScholarlyDiscourse in eScience
Simon Buckingham ShumKnowledge Media Institute
Open University, UK
In collaboration with:John Domingue, Enrico Motta, Gary Li, Victoria Uren, Marc Eisenstadt (Open U.), Austin Tate (Edinburgh U.), Nigel Shadbolt, Dave De Roure (Southampton U.), Albert Selvin
(Verizon, USA), Maarten Sierhuis (NASA, USA)
Visualization for eScience Workshop, National eScience CentreEdinburgh, 23-24 Jan, 2003
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Why focus on discourse?
• Researchers spend a lot of time talking and arguing, in meetings and documents
• New opportunities for eScience collaborative technologies- conversations in meetings- arguments in the literature
• Discourse has rhetorical structure• Semantic hypertext tools enable us to
construct and map this visually
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2 EPSRC projects at the OU are developing tools
Compendium…real-time mapping of discussions and
domain modelling in meetings
ClaiMaker…modelling research literatures as a
networks of claims and counter-claims
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Example 1: Compendium
• Visual mapping of discussions and domains
• Semantic hypertext for connecting ideas and resources
• Simple but powerful visual language based on IBIS (Issue-Based Information System)
• Group memory for collaborators
– Working memory: shared visual maps of discussions created during meetings
– Long term memory: recover discussions/rationale from months back
• Interoperability with other tools:
– Generates documentation and web discussions
– An intuitive interface for populating complex models
• Large, long term case studies documented
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Compendium discussion map from a project meeting, capturing open
issues, options, decisions, and linking in other resources
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Maps built in meetings can be exported to create
other formats of document, e.g. analysing
Y2K threats to an organisation (Verizon,
USA)
Compendium for Visual Modelling
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Compendium’s visual maps can be used to elicit data
to populate modelling tools,
e.g. simulation of a Mars lander team
(NASA Ames)
Compendium for Visual Modelling
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Compendium for Remote Collaboration
• The eScience CoAKTinG Project is integrating a suite of technologies to support the following kinds of eScience collaboration:
• Mapping discussions in virtual meetings (Compendium, Open U.)
• Multimedia meeting replay/navigation (HyStream, Southampton U.)
• Coordination and synthesis activities (I-X Process Panels – Edinburgh U.)
• Peripheral awareness of colleagues presence and availability (BuddySpace, Open U.)
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Time-delayed attendee replays precise moment by highlighting
relevant node in the Compendium discussion map (interface mockup)
CoAKTinG scenario 1
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BuddySpace: Enriching presence+messaging with semantics and visualizations
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I-X Process Panel: coordinated, active ‘To Do’ lists
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Example 2: ClaiMaker
• Will prose always be the dominant format to disseminate, critique and debate research?
• Research literatures are huge networks of claims and debates: ClaiMaker renders this visible and analysable as a semantic web
• Use to review, model and analyse complex networks of ideas– Who disagrees with this paper?
– What evidence is there for this prediction?
– What impact did this paper have?
– What is the intellectual history of this idea?
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A menu-driven web interface to annotate publications with new concepts, and
make connections between concepts using a set of link-types derived from discourse and argumentation theory, and commonly used in research.
Adding to the Network
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Adding to the Network
Drawing new conceptual structures
via a mapping interface
(an alternative to the menu/form interface)
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What documents challenge this one?
1. Extract concepts for this document2. Trace concepts on which they build3. Trace concepts challenging this set4. Show root documents
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Focusing on a concept from previous view
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Searching for PatternsTextual listing of results for a search on ‘machine
learning’ with a certain type of connection
Interactive applet to see and browse the structure of the search results
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Simple linear SVMRules made with CHARADE outperform Naive Bayes and decision trees
Decision Forest classifier improves on C4.5 and kNN
Simple linear SVM is among the best reported text categorizers
CDM performs moderately better than Naive Bayes and decision trees
Optimised rules outperform Naive Bayes and decision trees
Decision trees and Naive Bayes perform well for text categorization
SVMs are well suited to text categorization
Support Vector Machines (SVM)
Naive Bayes underperforms other classifiersNaive Bayes is the worst classifier
Nearest Neigbour is one of the best categorizers
SVM and kNN outperform other classifiers
Which classifier is best?
Rule learning
Instance based learning
Bayesian learning
Decision tree learning
Machine learning
Graph-theoretic cluster detection. Borrowing from scientometric techniques for identifying emerging research fields, instead of citations, we use inter-concept links.
Visual Knowledge Services
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Visualizing Argumentation
Springer-Verlag, 2002www.VisualizingArgumentation.info
• Argument mapping for scholarly publishing, scientific and public policy debates, education, teamwork, and organisational memory
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To know more…
• EPSRC CoAKTinG Project: www.aktors.org/coaktingwww.CompendiumInstitute.orgkmi.open.ac.uk/projects/buddyspace
• EPSRC Scholarly Ontologies Project: kmi.open.ac.uk/projects/scholonto
claimaker.open.ac.uk
• Visualizing Argumentation book:www.VisualizingArgumentation.info