1. International Conference on Digital Libraries November 16, 2000 Kyoto, Japan Digital Libraries of Community Knowledge: The Coming World of the Interspace Bruce Schatz CANIS Laboratory Graduate School of Library & Information Science University of Illinois at Urbana-Champaign www.canis.uiuc.edu, schatz@uiuc.edu

2. THE THIRD WAVE OF NET EVOLUTION PACKETS OBJECTS CONCEPTS

3. from Objects to Concepts from Syntax to Semantics Infrastructure is Interaction with Abstraction Internet is packet transmission across computers Interspace is concept navigation across repositories CONCEPT SPACES

4. LEVELS OF INDEXES Technology Engineering Electrical FORMAL INFORMAL (manual) (automatic) IEEE communities groups individuals

5. SCALABLE SEMANTICS Automatic indexing Domain-Independent indexing Statistical clustering Compute Context of concepts within documents documents within repositories

6. CROSS-OVERS IN SEMANTIC INDEXING

7. COMPUTING CONCEPTS ‘92: 4,000 (molecular biology) ‘93: 40,000 (molecular biology) ‘95: 400,000 (electrical engineering) ‘96: 4,000,000 (engineering) ‘98: 40,000,000 (medicine)

8. INTERSPACE PROCESSING

9. Interspace Remote Access Client

10. Navigation in MEDSPACE For a patient with Rheumatoid Arthritis Find a drug that reduces the pain (analgesic) but does not cause stomach (gastrointestinal) bleeding Choose Domain

11. Concept Search

12. Concept Navigation

13. Retrieve Document

14. Navigate Document

15. Retrieve Document

17. Category Map

18. Category Navigation

19. Concept Navigation

20. CONCEPT SWITCHING “Concept” versus “Term” set of “semantically” equivalent terms Concept switching region to region (set to set) match term Semantic region Concept Space

21. Medicine Session

22. Categories and Concepts

23. Concept Switching

24. Document Retrieval

25. THE NET OF THE 21st CENTURY Beyond Objects to Concepts Beyond Search to Analysis Problem Solving via Cross-Correlating Multimedia Information across the Net Every community has its own special library Every community does semantic indexing true The Interspace is true Cyberspace

26. Context approximates Meaning practical use via fast computers & large datasets increasing Levels of Abstraction Concepts - Categories - Perspectives - Situations Western is deterministic rules for correct answers Eastern is statistical clustering for relevant patterns ZEN OF THE NET