1. Extending the MDR for Semantic Web November 20, 2008 SC32/WG32 Interim Meeting Vilamoura, Portugal - Procedure for the Specification of Web Ontology - Doo-Kwon Baik (baikdk@korea.ac.kr), Korea University Dongwon Jeong (djeong@kunsan.ac.kr), Kunsan National University Jeong-Dong Kim (kjd4u@korea.ac.kr), Korea University Study Period on

2. Contents  Background  Motivation  Purpose  Discussion History of the Proposal  Scope  Our Proposal Part 1 : Framework Part 2 : Mapping Model between MDR and Web Ontology Part 3 : Procedure for Specification  Conclusion  Discussion & Comments 2 2008 SC32/WG2 Interim Meeting in Portugal

3. Background  ISO/IEC 11179, MDR (Metadata Registry) is Used whenever data must be used consistently within an organization or group of organizations  Semantic Web Extension of the current Web, Next generation Web, Intelligent Web Ref.: Wikipedia, http://en.wikipedia.org/wiki/Semantic_Web – The Semantic Web is an evolving extension of the World Wide Web that the semantics of information and services on the web are defined, making it possible for the web to understand and satisfy the requests of people and machines to use the web content  Web Ontology For the web, ontology is about the exact description of web information and relationships between web information Consists of concepts (classes), and their relations (predicates) Triple set 3 2008 SC32/WG2 Interim Meeting in Portugal

4. Motivation  MDR provides a good introduction to metadata concepts, including a lot of insight into certain aspects of the granularity of metadata MDR contributes knowledge integrity in a large scale – The simplicity provides the organization of implemental adaptation – The representational simplicity allows for easy sharing of metadata In a word, MDR contains standardized concepts for various applications fields.  Semantic Web promotes structured metadata representation, such as an ontology schema that concepts are associated via relationships  For creating Web ontology, concepts are firstly defined, and then relationships are linked between the concepts 4 2008 SC32/WG2 Interim Meeting in Portugal

5. Motivation (cont.)  Under such a situation, we can use the standardized concepts in MDR for building Ontology.  In other words, we need to specify Web ontology using standardized concepts in MDR for Semantic Web  However, there is no standard for specifying Ontology using concepts in a registry  The goal of this proposal is to provide the specification support of Ontology using the concepts in a regisry 5 2008 SC32/WG2 Interim Meeting in Portugal

6. Purpose  The purposes of this proposal are to promote the followings: Ease of definition of Web Ontology schema Creation of Web Ontology schema consisting of standardized concepts – i.e., well-known concepts or generalized concepts, which are accepted by general users as well as domain experts Common understanding of concepts across corresponding application fields More formalized specification of Web ontology 6 2008 SC32/WG2 Interim Meeting in Portugal

7.  Specifying Ontology using concepts in MDR Purpose (cont.) Conceptual Level Representational Level Object Class + Datatype VD_Relationship Unit of Measure DEC_Relationship Concept VD CD_Relationship CD MDR Level DE How to..? Class Property Type Property Domain Type Relation Class Property Type Property Range Type DEC Concept_Relationship Semantic Web Level Between MDR level and Semantic Web level Procedure for the specification of Web Ontology using standardized concepts in MDR Between MDR level and Semantic Web level Procedure for the specification of Web Ontology using standardized concepts in MDR Property 7 2008 SC32/WG2 Interim Meeting in Portugal

8. Discussion History of the Proposal  The idea of this proposal has been presented in the following meetings SC32 Plenary and WG Meetings, Australia, May 2008 – N1127 Extending the Metadata Registry for Semantic Web SC32 Workshop on ROR – ODMS - SMMP Study Period, Wuhan, China June, 2008 – N1177 Extending the Metadata Registry for Semantic Web 8 2008 SC32/WG2 Interim Meeting in Portugal

9. Scope  This proposal consists of the following parts: Part 1: Framework Part 2: Mapping Model between MDR and Web Ontology Part 3: Procedure for Specification  This proposal does not contain Ontology building methods by a specific ontology description language, such as RDF, RDF-S, OWL, Topic Maps, KIF, and so on 9 2008 SC32/WG2 Interim Meeting in Portugal

10. Our Proposal  Part 1: Framework  Part 2: Mapping Model between MDR and Web Ontology  Part 3: Procedure for Specification 10 2008 SC32/WG2 Interim Meeting in Portugal

11. Our Proposal(cont.) Procedure for Specification Metadata Registry (MDR) Metadata Registry (MDR) Web Ontology Web Ontology Web Ontology Web Ontology Web Ontology Web Ontology... Semantic Web Level PSO Level MDR Level Representational Level Conceptual Level  Part 1: Framework 11 2008 SC32/WG2 Interim Meeting in Portugal

12. Our Proposal(cont.)  Part 2: Mapping Model between MDR and Web Ontology Analyzes mapping relations between Web ontology and MDR Defines the relationships between components of MDR and Web Ontology Defines a metamodel for the mapping relations between MDR and Web ontology 12 2008 SC32/WG2 Interim Meeting in Portugal

13.  Part 2: Mapping Model between MDR and Web Ontology Concepts and Relationships in MDR Our Proposal(cont.) Object Class Data_Element_Concept Conceptual_Domain Object Class Property Object Class Property Value_Domain Conceptual_Domain_Relationship Value_Domain_Relationship Data_Element_Concept_Relationship Concept_Relationship 13 2008 SC32/WG2 Interim Meeting in Portugal

14.  Part 2: Mapping Model between MDR and Web Ontology Our Proposal(cont.) Property Type Property Domain Range Type Relation Semantic Web Level DEC Conceptual Level Representational Level Object Class Property + Datatype VD_Relationship Unit of Measure DEC_Relationship Concept_Relationship Concept VD CD_Relationship CD MDR Level DE Property Type Property Type Class Mapping PSO Level Class Building 14 2008 SC32/WG2 Interim Meeting in Portugal

15.  Part 3: Procedure for Specification This part contains the overall process for building Web ontology, and develops and defines concrete/detailed operations of each process. Our Proposal(cont.) Search Concepts Search Concepts Define Concepts Define Concepts Search Properties Search Properties Define Properties Define Properties Search/ Define Relations Search/ Define Relations 15 2008 SC32/WG2 Interim Meeting in Portugal

16.  A Case of Specifying Ontology Using Concepts in MDR 16 Our Proposal(cont.) Object Class + Datatype VD_Relationship Unit of Measure DEC_Relationship Concept VD CD_Relationship CD DE Class Property Type Property Domain Type Relation Class Property Type Property Range Type DEC Concept_Relationship Property 2008 SC32 WG2 interim in Portugal

17. Conclusion  The goal of this proposal is To specify ontology using standardized concepts registered and managed in MDR  This proposal facilitates usability of MDR enables creation of Web Ontology consisting of standardized concepts supports common understanding of concepts across corresponding application fields enables a more formalized specification of Web ontology 17 2008 ISO/IEC JTC1/SC32 WG2 interim in Portual

18. Discussion & Comments 18 Thank you! 2008 SC32 WG2 interim in Portugal