the user model and context ontology gumo revised for future web 2.0 extension
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The User model and Context Ontology GUMO revised for future Web 2.0 Extension. Dominik Heckmann , Eric Schwarzkopf, Junichiro Mori Context and Ontologies : Repesentation and Reasoning 2007 2008. 4. 4 Summarized by Gong GI Hyun, IDS Lab. Introduction. - PowerPoint PPT PresentationTRANSCRIPT
The User model and Context Ontology GUMO revised for future Web 2.0 Extension
Dominik Heckmann, Eric Schwarzkopf, Junichiro Mori
Context and Ontologies : Repesentation and Reasoning 2007
2008. 4. 4
Summarized by Gong GI Hyun, IDS Lab.
Copyright 2008 by CEBTCenter for E-Business Technology
Introduction
A Commonly accepted top level ontology for user models could be of great importance for the UM research.
Current trends of web 2.0 and social computing tell us that users like to create their own tag spaces naming conventions and taxonomies.
The problem is syntactical and structural differences be-tween existing user model and context system.
IDS Lab. Seminar - 2
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GUMO
General User Model Ontology is the central point of interest for the task of exchanging user models.
GUMO was to divide the descriptions of user model dimen-sions into three parts : auxiliary - predicate – range.
Something about the user’s interest in football
– Interest(aux) – football(predicate) – high,low(range)
User’s knowledge about Beethoven’s symponies
– Knowledge – Beetoven’s Symponies – poor,good
Users hair color
– Property – hair_color – black, red, brown,….
A list of identified important user model auxiliaries could be
{ has Property, has Interest, has Knowledge, has Preference, has Location, has Goal, has Plan….. }
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UbisWorld Ontology
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UbisWorld Ontology
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Representation of GUMO in OWL
Three example concept definitions :
Physiological State
Happiness
Has Knowledge
Physiological State
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Representation of GUMO in OWL
Happiness
Durability
– Qualitative time span of how long the statement is expected to valid.
Some example of Durability
– PhysiologicalState.heartbeat – can change within seconds.
– emotionalState.happiness – can change within hours.
– Demographics.birthplace – can’t normally change.
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Representation of GUMO in OWL
Has Knowledge
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U2M-UserModelServer
The user model server manages information about users or indi-viduals in general.
Storing user information
To exchange user information
between different application.
Privacy control
Applications can retrieve or
add information to the server
by simple HTTP request.
Request Example
http://u2m.org/UbisWorld/UserModelServer.php?
subject=Joerg.210006&auxiliary=hasProperty&predicate=Age.800302
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User Model propety example
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Situational Statements
For integrating Data Structure for User Modeling, Con-text-Awareness and Resource-Adaptive Computing
Basic Triples
Extended Triples
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Situational Statements examples
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Basic Triples
Extended Triples
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Situational Statements in OWL
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Futher works in the era of future Web?
There are no new technologies introduced by Web 2.0
But, the role and value of the user has been changed significantly. ( Tagging, Taxonomy, social rating… )
IDS Lab. Seminar - 14
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Summary
We have revisited the user model and context ontology GUMO.
To enrich GUMO user model, we use UbisWorld ontology which we develop and U2M user model server.
Introduce ‘Situational Statement’ as an integrating data structure for Context ontology such as GUMO.
The futher goal is to find out the influence of social com-puting in Web 2.0 to the so fat only semantic web ap-proach in order to determine the possible advantages of combining tag-space mining and ontology engineering.
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