Digital Libraries of Community Knowledge: The Coming World of the Interspace

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Digital Libraries of Community Knowledge The
Coming World of the Interspace
Bruce Schatz CANIS LaboratoryGraduate School of
Library Information ScienceUniversity of
Illinois at Urbana-Champaign www.canis.uiuc.edu,
schatz_at_uiuc.edu
International Conference on Digital
Libraries November 16, 2000 Kyoto, Japan
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THE THIRD WAVE OF NET EVOLUTION
CONCEPTS
OBJECTS
PACKETS
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CONCEPT SPACES

• 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
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LEVELS OF INDEXES
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SCALABLE SEMANTICS

• Automatic indexing
• Domain-Independent indexing
• Statistical clustering
• Compute Context of
• concepts within documents
• documents within repositories

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CROSS-OVERS IN SEMANTIC INDEXING
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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)
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INTERSPACE PROCESSING
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Interspace Remote Access Client
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Navigation in MEDSPACE

• For a patient with Rheumatoid Arthritis
• Find a drug that reduces the pain (analgesic)
• but does not cause stomach (gastrointestinal)
  bleeding

ChooseDomain
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Concept Search
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Concept Navigation
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Retrieve Document
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Navigate Document
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Retrieve Document
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Category Map
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Category Navigation
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Concept Navigation
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CONCEPT SWITCHING

• Concept versus Term
• set of semantically equivalent terms
• Concept switching
• region to region (set to set) match

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Medicine Session
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Categories and Concepts
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Concept Switching
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Document Retrieval
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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
• The Interspace is true Cyberspace

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ZEN OF THE NET

• 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