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THE NET OF THE 21st CENTURY: Concepts across the Interspace

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Concepts across the Interspace. Bruce Schatz. CANIS Laboratory ... INTERSPACE NAVIGATION. Semantic Indexes for Community Repositories ... – PowerPoint PPT presentation

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Title: THE NET OF THE 21st CENTURY: Concepts across the Interspace


1
THE NET OF THE 21st CENTURY Concepts across the
Interspace
Bruce Schatz CANIS LaboratoryGraduate School of
Library and Information ScienceUniversity of
Illinois at Urbana-Champaign www.canis.uiuc.edu,
schatz_at_uiuc.edu
CNI Spring Meeting April 26, 1999 Washington,
DC
2
THE THIRD WAVE OF NET EVOLUTION
CONCEPTS
OBJECTS
PACKETS
3
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
4
LEVELS OF INDEXES
5
THE DISTRIBUTED WORLD
  • Community Repositories in the Interspace
  • Every Person performs Every Role

USER request LIBRARIAN reference INDEXER class
ify PUBLISHER quality AUTHOR generate
6
CONCEPTS ACROSS THE INTERSPACE
7
SCALABLE SEMANTICS
  • Automatic indexing
  • Domain-Independent indexing
  • Statistical clustering
  • Compute Context of
  • concepts within documents
  • documents within repositories

8
CROSS-OVERS IN SEMANTIC INDEXING
9
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)
10
SIMULATING A NEW WORLD
  • Obtain discipline-scale collection
  • MEDLINE from NLM, 10M bibliographic abstracts
  • human classification Medical Subject Headings
  • Partition discipline into Community Repositories
  • 4 core terms per abstract for MeSH classification
  • 32K nodes with core terms (classification tree)
  • Community is all abstracts classified by core
    term
  • 40M abstracts containing 280M concepts
  • concept spaces took 2 days on NCSA Origin 2000
  • Simulating World of Medical Communities
  • 10K repositories with gt 1K abstracts (1K w/ gt
    10K)

11
COMMUNITY PROCESSING
12
INTERSPACE NAVIGATION
  • Semantic Indexes for Community Repositories
  • Navigating Abstractions within Repository
  • concept space
  • category map
  • Interactive browsing by Community experts

13
Interspace Remote Access Client
14
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
15
Concept Search
16
Concept Navigation
17
Retrieve Document
18
Navigate Document
19
Retrieve Document
20
(No Transcript)
21
Category Map
22
Category Navigation
23
Concept Navigation
24
SWITCHING
  • In the Interspace...
  • each Community maintains its own repository
  • Switching is navigating Across repositories
  • use your vocabulary to search another specialty

25
ENGINEERING SESSION
26
Engineering Categories Concepts
27
Further Concept Navigation
28
Searching via Concept Suggestion
29
Switching Across Repositories
30
CONCEPT SWITCHING
  • Concept versus Term
  • set of semantically equivalent terms
  • Concept switching
  • region to region (set to set) match

31
Medicine Session
32
Categories and Concepts
33
Concept Switching
34
Document Retrieval
35
INFORMATION SPACEFLIGHT
  • Landscape as category map visualization
  • Valleys are semantic clusters
  • Hills are semantic distances
  • Traversal across multiple levels of abstraction

36
Category Maps
37
SELF-ORGANIZING MAPS (SOMs)
38
INFORMATION SPACEFLIGHT
39
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

40
INFORMATION SPACEFLIGHT
The Zen of the Net
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