WebNet2001

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Tatiana Gavrilova Natalia Stash
WebNet2001
Construction of User Model via Psychological
Assessment Work in Progress
Orlando, Florida
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TRIVIUM
(Test geneRator for Intelligent adaptiVe tutorIng
and User Modeling)
Software for acquiring user models in a form
suitable for later automated use in adaptive
applications including distance learning systems
in the Internet
User Model

• Formal description of users characteristics such
  as
• Left/right hemisphere asymmetry
• Personal features
• Preferences
• Cognitive style

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Psychological factors (emotionally-communicative
and cognitive)
Emotionally-communicative

• Perception
• Understanding
• Clarity
• Usability
• Handiness

Anxiety (related to attention, motivation) can
be reduced by

• Instructions that minimize stress
• Positive feedback
• Reduced opportunities for failure

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Psychological factors
Cognitive
Personal cognitive style

• Field independence
• Scanning
• Leveling versus sharpening
• Reflection
• Conceptual differentiation

Style of logical mentality or deductive/inductive
strategies
Cerebral asymmetry

• Left hemisphere analytical,
  sequential, discrete
• Right hemisphere holistic, analogous, mosaic

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TRIVIUM Architecture
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Psychologist-experts workplace test development
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Psychologist-experts workplace editing of
knowledge base
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Scheme according to which tests results are
analyzed
Testing ? Factors in "raw values" (numerical
values) ? Factors expressed in linguistic
variables ? Entrance vector of factors ? Analysis
of the entrance vector of factors in the
inference engine ? Output vector of
factors ? Translation of the linguistic variable
of each factor into its verbal (textual)
expression ? Text construction of the verbal
portrait in dependence on availability of the
groups joining the factors on semantic commonness
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Respondents workplace
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Respondents workplace
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Respondents workplace interpretation of test
results
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Further considerations

1. Interface and scenario adaptability (layout,
   help, navigation).
2. For further automation and adjustment of the
   resulting user models a set of specially designed
   intelligent agents is being developed aimed at
   controlling and monitoring users activity during
   their active work or learning sessions.

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Contact information
Natalia Stash E-mail N.V.Stach_at_tue.nl Address
HG 7.88, Den Dolech 2, P.O.Box 513, 5600 MB
Eindhoven, The Netherlands Tel [phone]