metadata: practice and practice
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Metadata: practice and practice. Lorcan Dempsey VP Research and Chief Strategist CLIR/DLF. Managing Digital Assets: A Primer for Library and Information Technology Administrators Charleston, SC February 4-6, 2005. Overview. Part 1 Part 2 Part 3 Part 4. Some themes. - PowerPoint PPT PresentationTRANSCRIPT
CLIR/DLF primer
Metadata:practice and practice
Lorcan DempseyVP Research and Chief Strategist
CLIR/DLF. Managing Digital Assets: A Primer for Library and Information Technology Administrators
Charleston, SCFebruary 4-6, 2005
CLIR/DLF primer
Overview
Part 1 Part 2 Part 3 Part 4
CLIR/DLF primer
Some themes
Consolidation: fragmentation gets in the way Industrialization: much of our metadata creation
is a cottage industry: current approaches will not scale
Cost: value Intellectual and machine: need to work harder to
programmatically create metadata Institutions and service: move from projects to
service
CLIR/DLF primer
Example: Metasearch/portal
Metadata is everywhere ;-)
CLIR/DLF primer
A ‘portal’ turned inside out …
Common services
Content services
Application services
Presentation services
I need a few
references
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
authenticationauthentication
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Directory: user profileDirectory: user profile
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Query brokerQuery broker
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Directory: service/collection description
Directory: service/collection description
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Content: results listContent: results list
CLIR/DLF primer
I’d like to get this book.
Common services
Content services
Application services
Presentation services
Request brokerRequest broker
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Directory: ILL policyDirectory: ILL policy
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Directory: service/collection description
Directory: service/collection description
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Content: circ/ILL systemContent: circ/ILL system
CLIR/DLF primer
I need this article too.
Common services
Content services
Application services
Presentation services
Request brokerRequest broker
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
openURL resolveropenURL resolver
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Directory: local knowledge baseDirectory: local knowledge base
CLIR/DLF primer
Nearly there …
Common services
Content services
Application services
Presentation services
Directory: service/collection descriptionDirectory: service/collection description
CLIR/DLF primer
Common services
Content services
Application services
Presentation services
Content: articleContent: article
CLIR/DLF primer
Directory: ILL policy
Directory: ILL policy
Common services
Content services
Application services
Presentation services
AuthenticationAuthentication
Directory: user profile
Directory: user profile
Query brokerQuery broker
Directory: service/collection description
Directory: service/collection description
Reference dbReference db
Request brokerRequest broker
Circ/ILL systemCirc/ILL systemOpenURL resolverOpenURL resolver
Directory: local knowledge base
Directory: local knowledge base
Article dbArticle db• Metadata for multiple
entities required to support operations.
• This picture could be extended in multiple ways.
• Metadata for multiple entities required to support operations.
• This picture could be extended in multiple ways.
CLIR/DLF primer
Metadata as intelligence …
Know what resources are available Know how to play a resource Know provenance of a resource Know what use policy governs a resource Know how to ingest a resource Know how to interact with a resource Know how to compose/decompose resources …
CLIR/DLF primer
… allows people and machines to work smarter …
Metadata?
CLIR/DLF primer
Metadata?
Schematized …
… statements about …
… resources
CLIR/DLF primer
Something about Resources
CLIR/DLF primer
Resources: everything that moves
Multiple types of information Objects
Collections Services People Organizations Places Terms Formats Rights Business terms License
… and will support multiple operations Discovery to delivery Digital asset
management Publishing interfaces:
intersections between user information spaces and library information spaces
CLIR/DLF primer
Different classes of metadata increasingly a part of complex object models
SCORM/Content package
METS MPEG 21 …
Descriptive Structural Technical Administrative
Rights Preservation Tracking
Provenance
CLIR/DLF primer
Community?Cultural heritage Media
industry
Web/Internet
LibraryInstructionaltechnology
E-gov
Researchcommunities
Book industry
EAD, MARC AMC, ..
MARC, MODS, DC, RSLP, ..
Onix, …
XML, RDF, OWL, …
CSDGM, DDI, NBII, IVOA, …
EGMS, AGLS, GILS, …
GEM, DC-ED, IEEE-LOM, SCORM, …
MPEG, JPEG, TIAA-CREF…
*
*
*
*
CLIR/DLF primer
So …
More than discovery … More than information objects … More than library …
CLIR/DLF primer
Something about schematized
CLIR/DLF primer
Simple descriptive metadata!!
‘Element set’
Information model
Encoding
Values/content
Application profile
FRBRINDECSCIDOC…
MARC21DCVRA CoreMODSOnix…
Cataloging rulesControlled vocabs.…
XMLISO2709…
CLIR/DLF primer
OAI
CLIR/DLF primer
OAI-based mediation
OAI Server#1OAI Server#1
OAI Server#2OAI Server#2
OAI Server#3OAI Server#3
OAIOAIHarvesterHarvester
WebWebBrowserBrowser
MergedMergedresourceresource
CLIR/DLF primer
OAI
A way of ‘publishing’ processable metadata on the network
A way of synchronizing databases
And …
The same for resources themselves? A nice building block for other services
CLIR/DLF primer
An example
Following pages show some experimentalservices where OAI is used to ‘publish’ metadata.
There is a WIKI interface to metadatastores managed under OAI.
Following pages show some experimentalservices where OAI is used to ‘publish’ metadata.
There is a WIKI interface to metadatastores managed under OAI.
CLIR/DLF primer
CLIR/DLF primer
CLIR/DLF primer
CLIR/DLF primer
Edit
Tools
CLIR/DLF primer
CLIR/DLF primer
CLIR/DLF primer
Interoperability
Recombinant potential
Economic and service issues
Cost
CLIR/DLF primer
Interoperability a factor at all these levels .. For example ..
Encoding
Element set
Content/values
Encoding
Element set
Content/values
Examples: Z39.2/MARC/AACRDCOAI
CLIR/DLF primer
Importance of agreements
DC profile Vocabularies
CLIR/DLF primer
This gives a context for discussing …
Traditional library practice Strive for consistency at all three levels in the ISO
2709/MARC/AACR model Institutionalised in standards, OCLC/RLG/LC, committees, …
Dublin Core Consistency of element set A small number of encodings Content/values subject to separate agreement
OAI A transport for resources. No control over the transported resources So …
CLIR/DLF primer
Something about collections
CLIR/DLF primer
CLIR/DLF primer
CLIR/DLF primer
Collections grid
high lowlo
whi
gh
StewardshipU
niqu
enes
s
BooksJournals•Newspapers•Gov. docs•CD, DVD•Maps•Scores
Special collectionsArchives•Rare books•Local history materials•Archives & Manuscripts•Theses & dissertations
Freely-accessible web resources
Research and learning materials
•ePrints/tech reports•Learning objects•Courseware•E-portfolios•Research data
Untransferred records
CLIR/DLF primer
Collections grid
high low
low
high
E-learningE-research
Publishing
Cultural heritage
disclosure
Reformatting
Digital assetmanagement
AmazoogleD2D
Some observations
Bought materials Licensed materials
Special collections/archives
Research and learning materials
high low
low
high
Stewardship
Uni
quen
ess
MetadataCost/valueRoutine?Consolidated?
CLIR/DLF primer
CLIR/DLF primer
Some thoughts …
Fragmentation Fragmentation reduces gravitational pull Fragmentation increases cost
Consolidation Services Processing Mobilize collective capacity
Routinization/industrialization Programmatic extraction of metadata from digital resources Agreement
Plural disclosure Want to make stuff available in lots of ways
Thank you!Lorcan [email protected]