Ontology creation, extraction, and maintenance
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Ontology creation, extraction, and maintenance Presentation Transcript

  • 1. Ontologies creation,extraction and maintenance Ontology creation, extraction, and 6th AOS Workshop maintenance Vial Real (Portugal) 26-27 July 2005 Food and AgricultureOrganization of the UN 6th AOS Workshop Library and Vial Real (Portugal) DocumentationSystems Division 26-27 July 2005 Discussion forum n.1 Chair: Anita Liang July 2005
  • 2. The AOS/CS Workbench Ontologies creation,extraction and maintenance • Support and manage the multi-language terminology work of information 6th AOS Workshop management specialists in the Vial Real (Portugal) development, maintenance, and quality 26-27 July 2005 assurance of the AOS/CS Food and AgricultureOrganization of the UN Library and DocumentationSystems Division July 2005
  • 3. The AOS/CS Workbench Ontologies creation,extraction and maintenance • Features – Text processing 6th AOS Workshop – Corpus Creation Vial Real (Portugal) – Corpus Analysis 26-27 July 2005 – Term/Relationship Management Food and AgricultureOrganization of – Quality Assurance the UN Library and Documentation – Versioning and DeploymentSystems Division July 2005
  • 4. Concept Hierarchy Ontologies creation,extraction and maintenance text corpus 6th AOS .doc, .pdf, Workshop .xml, etc. Vial Real (Portugal) 26-27 July 2005 Food and AgricultureOrganization of the UN Library and DocumentationSystems Division AOS/CS Workbench concordance July 2005 pattern-matching multilingual
  • 5. Tool features: Text Processing Capabilities Ontologies creation,extraction and maintenance • Multilingual • Font support for Chinese and Arabic at 6th AOS Workshop minimum, also Lao, Thai Vial Real (Portugal) 26-27 July • Other 2005 Food and – Entity extraction AgricultureOrganization of the UN – POS tagging – Parsing Library and DocumentationSystems Division July 2005
  • 6. Tool Features: Corpus Creation and Maintenance Ontologies creation,extraction and maintenance • Spidering tools (http://www.manageability.org/blog/stuff/open- source-web-crawlers-java/view) 6th AOS Workshop • Document input and storage Vial Real (Portugal) – .doc, .pdf, .html, .xml 26-27 July 2005 • Text extraction (http://multivalent.sourceforge.net/) Food and AgricultureOrganization of • Domain-specific repositories the UN – specifiable: agriculture, chemistry Library and DocumentationSystems Division – combine and remove July 2005
  • 7. Tool Features: Corpus Analysis Ontologies creation, • Text file managementextraction and maintenance – Add/delete files – Add/delete Directories – Add/delete URLs • Search: – Word (or part-word) or phrase; string, regular expression, tag search 6th AOS – Number of hits Workshop – Case (in)sensitive Vial Real • Display: (Portugal) – hide keyword option 26-27 July 2005 – toggle between a KWIC format and sentence mode Food and • Sorting Agriculture – 1L (First Left), 1R, 2L, 2R, as well as by search word and by text order;Organization of the UN – primary and secondary sorts (e.g., first right, then first left). Library and • Frequency information Documentation – display in alphabetical or frequency order of wordsSystems Division • Collocates – Search collocates of spans from 1L-1R to 4L-4R – Collocate highlighting • Output: The concordance results can be saved to a file and/or printed. July 2005 • Pattern-matching with pattern language • Other: pattern-matching using POS tags, parallel text concordancing
  • 8. Tool Features: Automatic KOS Search Ontologies creation,extraction and maintenance • Specify online KOS URLs • Automatic suggested parent and placement 6th AOS Workshop within hierarchy Vial Real (Portugal) 26-27 July 2005 Food and AgricultureOrganization of the UN Library and DocumentationSystems Division July 2005
  • 9. Tool Features: Term/Relationship Management Ontologies creation,extraction and maintenance • Modifications (AGROVOC Maintenance Tool) – term • add • delete 6th AOS • edit Workshop – relationship Vial Real (Portugal) • add 26-27 July • delete 2005 • edit Food and Agriculture • Machine learning (Annotation Tool)Organization of the UN – wordnet Library and – agrovoc itself DocumentationSystems Division – other thesauri • Batch/bulk modifications based on patterns and structure (rules-as-you-go) July 2005
  • 10. AOS/CS Workbench Ontologies creation,extraction and maintenance 6th AOS Workshop Vial Real (Portugal) 26-27 July 2005 Food and AgricultureOrganization of the UN Library and DocumentationSystems Division July 2005
  • 11. Tool Features: Versioning and deployment Ontologies creation,extraction and maintenance – CVS-type system to check out and check in changes 6th AOS – Administrator-level functionalities for publishing Workshop Vial Real versions (Portugal) 26-27 July 2005 – Language-level versioning Food and AgricultureOrganization of the UN Library and DocumentationSystems Division July 2005
  • 12. Tool Features: Quality Assurance Ontologies creation,extraction and maintenance • Logging and reporting of user actions • Confirmation/verification of user actions 6th AOS Workshop Vial Real • User rights management (Portugal) 26-27 July 2005 • Ownership Food and AgricultureOrganization of the UN Library and DocumentationSystems Division July 2005
  • 13. Technical Platform Details Ontologies creation,extraction and maintenance • Centralized relational database backend – local and remote databases? – is there need for (1) referential integrity, triggers, etc. or 6th AOS (2) can we get by with publishing and storage Workshop • (1): PostgreSQL Vial Real (Portugal) • (2): MySQL 26-27 July 2005 • Web-based GUI Food and Agriculture • Distributed client-server architectureOrganization of the UN • Java-based Library and Documentation • Scalability and performance for network – web servicesSystems Division July 2005
  • 14. Workshops & Training Ontologies creation,extraction and maintenance • Promote the Workbench • Contact AGROVOC center of excellence 6th AOS Workshop Vial Real • Nominate AGROVOC managers (Portugal) 26-27 July 2005 • Organize workshop Food and Agriculture • Organize trainingOrganization of the UN Library and DocumentationSystems Division July 2005
  • 15. Discussion points Ontologies creation,extraction and maintenance • Tools (workbench) • Modeling concept / term / string 6th AOS Workshop Vial Real • Concepts vs instances (Portugal) 26-27 July 2005 • Knowledge representation language (OWL, Food and Agriculture SKOS)Organization of the UN Library and • Update it’s a problem? DocumentationSystems Division July 2005