1. 1SDO-based Metadata ModelDC-2004, 11-14 October A Metadata Model Based on the Concept of Structured Digital Object (SDO) and Its Application in Digital Libraries - From Concept to Prototype System Ying LI, Hidehiro ISHIZUKA Graduate School of Library, Information and Media Studies, University of Tsukuba, Japan Wednesday, October 13, 2004

2. 2SDO-based Metadata ModelDC-2004, 11-14 October Outline of Presentation Introduction Introduction Body Body Conclusion Conclusion

3. 3SDO-based Metadata ModelDC-2004, 11-14 October Introduction Definition of Metadata & the Concept of Structured Digital Object (SDO) the Concept of Structured Digital Object (SDO) A Metadata Model Based on the Concept of SDO Research Purposes

4. 4SDO-based Metadata ModelDC-2004, 11-14 October Introduction - Definition of Metadata Definition of Metadata : Data about data Data about data Metadata is a set of structured digital objects about resources in digital libraries. Metadata is a set of structured digital objects about resources in digital libraries. the Concept of Structured Digital Object SDO is metadata SDO is metadata

5. 5SDO-based Metadata ModelDC-2004, 11-14 October Introduction - A Metadata Model Based on the Concept of SDO Metadata Model Based on the Concept of SDO metadata metadata elementary (atomic) unit elementary (atomic) unit hierarchy structure hierarchy structure Research Purposes all the different granularities all the different granularities individual individual precise search precise search reuse & sharing resources reuse & sharing resources interoperability interoperability

6. 6SDO-based Metadata ModelDC-2004, 11-14 October Elementary (Atomic) Unit LI, Ying LI, Ying <docAuthorLastName>LI<docAuthorLastName> Ying Ying

7. 7SDO-based Metadata ModelDC-2004, 11-14 October ・・・・・・ Hierarchy Structure for SDO The first layer: set for primary documents e.g. set={anthrax-related articles} The second layer: a primary document e.g. an article on anthrax. The third layer: set for a part of a primary document e.g. set={title, abstract,…} The fourth layer: a part of a primary document e.g. title, abstract, a table, a figure, reaction formula. The fifth layer: set morpheme e.g. set={word, mol. formula, a cell value of table,..} The sixth layer: morpheme e.g. a word, molecular formula. Coarse Fine * Source: H. Ishizuka, Y. Li” Digital Library System Based on Concept of Computer-processable Digital Objects ”, Proceedings of Digital Library - IT Opportunities and Challenges in the New Millennium, pages 315-326, 2002.7, Beijing. ・・・・・・・

8. 8SDO-based Metadata ModelDC-2004, 11-14 October Body Design Objective ⇔ Enhancing the Functionality a Global Digital Library Based on SDO Metadata a Global Digital Library Based on SDO Metadata Proposal of the Global Digital Library & Its Functions : Using the metadata model based-SDO, Using the metadata model based-SDO, Restructuring existing resources in existing digital libraries, Forming "Global Digital Library ". Global Digital Library has a feature of a portal site. Global Digital Library has a feature of a portal site. Satisfying users for precise search, Satisfying users for precise search, Meeting individual user need to different granularities information. Meeting individual user need to different granularities information. Providing Web Services for information services, Providing Web Services for information services, & the function of Topic Maps to associate SDOs with information resources. & the function of Topic Maps to associate SDOs with information resources. Solving interoperability problems, Solving interoperability problems, Achieving goals: reusing, sharing information. Achieving goals: reusing, sharing information.

9. 9SDO-based Metadata ModelDC-2004, 11-14 October Main Items Architecture of the Design for a Global Digital Library Based on SDO Metadata Developing Prototype for a Global Digital Library Based on SDO Metadata

10. 10SDO-based Metadata ModelDC-2004, 11-14 OctoberArchitecture Metadata Set Based-SDO Heterogeneous Resources in Existing Digital Library Global Digital Library Based-SDO Hierarchy Structure With a portal site property Web Services Topic Maps Matching Metadata Network Structure Forming Reply Searcher’s Access Web Services Reply Resources Fig. Architecture of the Prototype Subsystem: Creating Metadata Model Subsystem: Accessing and Replying Searcher’s Access

11. 11SDO-based Metadata ModelDC-2004, 11-14 October Subsystem : Creating Metadata Model Definition of SDO Metadata Set Based-SDO Heterogeneous Resources in Existing Digital Library Global Digital Library Based-SDO Hierarchy Structure Forming Matching ① ③ ②

12. 12SDO-based Metadata ModelDC-2004, 11-14 October Subsystem: Accessing & Replying Heterogeneous Resources in Existing Digital Library Global Digital Library Based-SDO Hierarchy Structure Metadata SDO Hierarchy Structure Topic Maps Metadata B ased Network S tructur e Web Services ① ② ③ ④ ⑤ ⑥ ⑦

13. 13SDO-based Metadata ModelDC-2004, 11-14 October Prototype: Show Screenshot Granularity Granularity Web Services Web Services Topic Maps Topic Maps

14. 14SDO-based Metadata ModelDC-2004, 11-14 October Granularity of the Existing Merck Index Data

15. 15SDO-based Metadata ModelDC-2004, 11-14 October Granularity of the Global Digital Library Based-SDO Hierarchy Structure

16. 16SDO-based Metadata ModelDC-2004, 11-14 October Web Services for Merck Index

17. 17SDO-based Metadata ModelDC-2004, 11-14 October Invoking Merck Index

18. 18SDO-based Metadata ModelDC-2004, 11-14 October Invoked Result

19. 19SDO-based Metadata ModelDC-2004, 11-14 October Granularity of the Global Digital Library Based-SDO Hierarchy Structure

20. 20SDO-based Metadata ModelDC-2004, 11-14 October Describing/Expressing SDOs Relationships by Topic Maps

21. 21SDO-based Metadata ModelDC-2004, 11-14 October Resources Discovery by Topic Maps

22. 22SDO-based Metadata ModelDC-2004, 11-14 October Ciprofloxacin Patents Jurnals XML Topic Maps (XTM)

23. 23SDO-based Metadata ModelDC-2004, 11-14 October Future Work -Application to E-learning Text Based on SDO Internet Web Services (SOA) By Topic Maps, Linking Between Relevant Teaching Materials, and Discoverying Service Request Result Set Developing Teaching Materials Based on SDO Sharing Teaching Materials by Web Services Contract-Based

24. 24SDO-based Metadata ModelDC-2004, 11-14 October Conclusion Structured Digital Object is : Structured Digital Object is : Metadata Metadata Different granularities: from atomic to Coarse Different granularities: from atomic to Coarse Hierarchy structure Hierarchy structure Up-to-date and practical use of Metadata, Web Services (SOA), and Topic Maps Up-to-date and practical use of Metadata, Web Services (SOA), and Topic Maps Reuse & Sharing Resources, Interoperability, Individual, Precise search Structured Digital Object can be applied in the fields of : Structured Digital Object can be applied in the fields of : Global Digital library Global Digital library E-learning E-learning etc. etc.

25. SDO-based Metadata Model DC-2004, 11-14 October 25 Thank you for your kind attention ！ 謝 謝 ！ご清聴ありがとうございました。