FUZZY ONTOLOGY
Building a fuzzy ontology plugin
for Protégé
Introduction to Protégé



Free software for the creation of models
and aplications using ontologies
Developed by Stanford University and
Mark Musen
Enables the creation of ontologies for
Semantic Web in the W3C OWL
language
Ontology basics


Description of concepts and relations
that exist between them, used by one
or more agents.
“A formal and explicit specification of a
shared conceptualisation.”
Basic components





Classes - organized in a hierachy
Relations - types of interactions
Axioms - model true statements
Instances - specific elements
Domain - limits of an ontology
Vocabulary - classes and instances
Protégé architecture




GUI for manipulation of the knowledge
base
Rich set of structures for modeling
knowledge in various presentations
formats
Can be expanded by Java API plug-ins
PAL – internal axiomatic language for
the consrtuction of output forms
Architecture schematic
Source code


Protégé 4.0
http://protege.stanford.edu/download/p
rotege/4.0/zip/?C=N;O=D
graphViz
http://www.graphviz.org/Download.php
Creating an ontology
Creating a class
Object properties
Creating relations
Creating instances
Searching the code


Protégé architecture, documentation
and code repositories
http://protege.stanford.edu/
Problems with compatibility of versions
Protégé 3.2, Protégé 3.4 e Protégé 4.0
Types of plugins








T - Tab Widget plug-ins
S - Slot Widget plug-ins
P - Project plug-ins
I - Resource Display plug-ins
F - Resource Action plug-ins
O - Ontology Test plug-ins
R - Result Panel plug-ins
C - Conditions Widget Extensio plug-ins
Location of plugins
Usefull resourcess





Protégé source
http://protege.stanford.edu/download/registered.html
Protégé repository
http://smi-protege.stanford.edu/repos/protege
Development guide with examples
http://protege.stanford.edu/plugins/owl/api/
guide.html#Overview
Class inheritance by plugin type
http://protege.stanford.edu/doc/dev.html#plugins
JAVA help
http://wso2.org/project/wsas/java/1.1/docs/
setting-java-home.html
Modifying XML


Rename the file XML in folder XML to
plugin.xml.
Add the folowing code into file
Configuring Eclipse






Verify SubClipse is installed
Add Protégé repository to Eclipse
Select the file trunk from protege4/protegestandalone/
Create new Java Project
Add all JAR files from subfolders lib and
osgi/equinox into subfolder src in the plugin
folder
Select file build.xml and execute “run as...”
“Ant Build”
Required Métodos




initialiseClassView() - creates
vizualisations
updateView() - selects classes.
disposeView() - removes visualisations
getOWLModelManager() - accesses
ontologies and events
getOWLWorkspace() - returns interface
Plugin example





Select the Protégé instalation folder as
workspace
Add all JAR files with class packages
Create and configure the compiler
output
Create a Java class with required
methods
Execute program
Errors and problems
Solution





Create a workspace in the Protégé instalation
file
Import all Protégé source code files into the
project
Add all possible libraries and extensions into
the Protégé instalation file
Configure the complier as before
Configure a JAVA_HOME as described in Java
help
Result
References






GRUBER, T. R. A Translation Approach to Portable Ontology Specifications. Knowledge
Acquisition, v. 5, n. 2, p. 199-220, 1993.
YAGUINUMA, C. A.; BIAJIZ, M.; SANTOS, M. T. P. Sistema FOQuE para Expansão
Semântica de Consultas Baseada em Ontologias Difusas. In: XXII Simpósio
Brasileiro de Banco de Dados, 2007, João Pessoa (PB). XXII Simpósio Brasileiro de Banco de
Dados. João Pessoa (PB): SBC, 2007. v. 1. p. 208-222.
STANFORD UNIVERSITY. The Protégé Ontology Editor and Knowledge Acquisition
System. Disponível em: <http://protege.stanford/>. Acesso em: 03 ago. 2009.
SEMPREBOM, T; CAMADA, M; MENDONÇA, I. Protégé e Ontologias. Florianópolis, 17 jul.
2007. Disponível em: <http://www.das.ufsc.br/~gb/pgia/Protege07/ontologia_protege.pdf>. Acesso em: 03 ago. 2009. 26 p.
MIMWIKI. Utilização do Protégé para Definição de Ontologias Médicas. Disponível
em:
<http://mimwiki.med.up.pt/index.php/Utiliza%C3%A7%C3%A3o_do_Prot%C3%A9g%C3%
A9_para_defini%C3%A7%C3%A3o_de_ontologias_m%C3%A9dicas>. Acesso em: 03 ago.
2009.
WIKIPEDIA.ORG. Ontologia (Ciência da Computação). Disponível em: <
http://pt.wikipedia.org/wiki/Ontologia_(ci%C3%AAncia_da_computa%C3%A7%C3%A3o)>.
Acesso em: 03 ago. 2009.