FUZZY ONTOLOGY - PowerPoint PPT Presentation

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  1. FUZZY ONTOLOGY Building a fuzzy ontology plugin for Protégé

  2. 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

  3. 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.”

  4. 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

  5. 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

  6. Architectureschematic

  7. Source code •  Protégé 4.0http://protege.stanford.edu/download/protege/4.0/zip/?C=N;O=D • graphVizhttp://www.graphviz.org/Download.php

  8. Creating an ontology

  9. Creating a class

  10. Object properties

  11. Creating relations

  12. Creating instances

  13. 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

  14. 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

  15. Location of plugins

  16. Usefull resourcess • Protégé sourcehttp://protege.stanford.edu/download/registered.html • Protégé repositoryhttp://smi-protege.stanford.edu/repos/protege • Development guide with exampleshttp://protege.stanford.edu/plugins/owl/api/guide.html#Overview • Class inheritance by plugin typehttp://protege.stanford.edu/doc/dev.html#plugins • JAVA helphttp://wso2.org/project/wsas/java/1.1/docs/setting-java-home.html

  17. Modifying XML • Rename the file XML in folder XML to plugin.xml. • Add the folowing code into file

  18. Configuring Eclipse • Verify SubClipse is installed • Add Protégé repository to Eclipse • Select the file trunk from protege4/protege-standalone/ • 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”

  19. RequiredMétodos • initialiseClassView() - creates vizualisations • updateView() - selects classes. • disposeView() - removes visualisations getOWLModelManager() - accesses ontologies and events • getOWLWorkspace() - returns interface

  20. 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

  21. Errors and problems

  22. 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

  23. Result

  24. 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/pg-ia/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.