ARK-June 2007 [email protected]
Making a taxonomy work for the organisation
Liddy NevileSunrise Research Laboratory/La Trobe University
ARK-June 2007 [email protected]
Making a functional taxonomy
• The role of a taxonomy is not limited to discovery within the realm of the creator of the digital library.
• What is necessary for a good taxonomy to work inside and outside the organisation, for the organisation?
ARK-June 2007 [email protected]
• How interoperable are the organisation’s resources?
• How do outsiders access and contribute to the organisation’s knowledge base?
• Does the individual user get access to what they need to use the resource?
Three interoperability problems
ARK-June 2007 [email protected]
• Opening the silos across the organisation
• Integrating external and internal resources for external and internal use
• Considering the individual so that everyone gets access to the
resources
Three dimensions to the problem
ARK-June 2007 [email protected]
Three case studies
• Victorian government ‘silos’• Quinkan Rock Art• AccessforAll considerations - TILE
ARK-June 2007 [email protected]
1. Working across the silos
• Making Inter-operability Visible– Visualising Interoperability: ARH,
Aggregation, Rationalisation and Harmonisation
– With Michael Currie, Meigan Geileskey, Richard Woodman
• Project of Victorian Department of Premier & Cabinet• http://www.bncf.net/dc2002/program/ft/paper21.pdf
ARK-June 2007 [email protected]
1. Working across the silos
• 3 government departments all using the same AGLS schema
• Differences in purpose - one makes brochure-ware, one records critical info, one does broad-based research, ….
• All have document m’ment systems• All docs must be discoverable
ARK-June 2007 [email protected]
Process
• Aggregate - – List all elements and values currently
used - is there a significant difference?
Element name Examples of values providedDC.Title Victorian Government home page
Department of JusticeMarriages (level 2 overview)Marriage CertificatesFishtank
DC.TITLE SOFWeb Front PageDC.title Victorian Education Channeltitle Department of Justice - Births Deaths and Marriages
- MarriagesDepartment of Justice - Births Deaths and Marriages- Marriages - Marriage CertificatesDepartment of Education & TrainingVictorian Curriculum and Assessment Authority,AustraliaArts MattersCopyright, Trade Marks And DisclaimersVictorian Education Channel - Welcome Page
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Process
• Aggregate• Harmonise
– Look at the list of elements and decide which have material differences
**Remembering that each agency values all its metadata content
ARK-June 2007 [email protected]
Harmonise trivial differences
• Mis-use of available elements, qualifiers etc
• Different expression of the same type of information
• Different granularity• Different element name for the
same information, … -> need to rationalise
ARK-June 2007 [email protected]
• Element names– Inconsistent case eg. DC.Title/TITLE/title
EDNA.Userlevel/UserLevel Non-standard names eg. DC.Keywords
Non-standard qualifiers eg. DC.Description.Abstract Non-standard abbreviations eg. DC.Lang
Fields Standard and non-standard element names
eg. 'description' and DC.Description and Custodian
Rationalise
ARK-June 2007 [email protected]
• Values(Despite DCMES recommendations …)
DC.Identifier: other id numbers without qualifiers.
DC.Date: also used yyyy, yyyy/m/d, yyyy-dd-mm
DC.Format: Non-standard terms eg. VHS (PAL) Incorrect case eg. text/HTML
Rationalise
ARK-June 2007 [email protected]
DC.Language: also used en, en-au, en-AU
Qualifiers embedded in values: DC.Publisher CONTENT="corporateName=State..."
Non-standard proper names DPC for Department of Premier and Cabinet
->Generally inconsistent use of capitalisation and punctuation
Rationalise
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Discoveries
• Main problems were to dowith incompatibility of syntax and semantics although both were well described in documentation and looked very simple.
ARK-June 2007 [email protected]
Outcomes
• Minimal interference• Visualisation of
differences/incompatibility• Support for local specification and
global interoperability• Base for a single system to satisfy
many purposes using ARH approach
ARK-June 2007 [email protected]
2. Repatriation of Quinkan Culture
• with Eric Wainwright (Team Leader), Sophie Lissonnet (metadata) and others
• An ARC funded LINK Project• Full report - http://eprints.jcu.edu.au/1135/• Int. J. of Metadata, Semantics and
Ontologies (IJMSO)ISSN Vol 1 No 3. (Online):
1744-263X - ISSN (Print): 1744-2621
ARK-June 2007 [email protected]
Quinkan Country
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Images from the Laura Booklet published by the Ang-gnarra Corporation
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ARK-June 2007 [email protected]
Quinkan Culture
• People were here 36,000 years ago• The community has been ravaged
in the last 200 years and so has the culture
• 60 people remain• 290 km from the nearest city• with 100,000 Rock Art paintings in
excellent condition.
ARK-June 2007 [email protected]
Repatriation of resources
• The problem - seamless import and export of descriptions to offer a single portal
• People moving out of country stay connected and those in country can learn from those out of country
• Multiple voices for multiple audiences
ARK-June 2007 [email protected]
Dublin Core - qualified
• A standard form of description with rule-based extensions– Locally specific - globally interoperable
• Standard mappings from other standards
• Enabling functions on the classifications for better discovery – Annotations– Semantic Web applications
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Semantic Web applications
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Tommy George inspecting red rock ochre.
"A lot of paintings are made in red."
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Annotation Services
• W3C annotation server (Annotea)• Uses W3C standards and technologies• Uses RDF metadata framework• User accessible• Create, store, edit and delete
annotations
server Annotea
ARK-June 2007 [email protected]
Annotation Servers
text text text text text text text text text texttext text text text texttext text text text text
text text text text texttext text text text texttext text text text texttext text text text text
text text text text texttext text text text texttext text text text texttext text text text text
Annotates
Original Resource
User/Author
text text text text text text text text text texttext text text text texttext text text text text
text text text text texttext text text text texttext text text text texttext text text text text
text text text text texttext text text text text
text text text text text text text text text texttext text text text texttext text text text text
text text text text texttext text text text texttext text text text texttext text text text text
text text text text texttext text text text text
text text text text texttext text text text text
text text text text texttext text text text texttext text text text texttext text text text text
text text text text texttext text text text texttext text text text text text text text text text
ARK-June 2007 [email protected]
3. Access For All
• By law in Australia, all public resources to be available to all equally ie do not discriminate against those who cannot access text, or sounds, or visuals.
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How do we know what he needs?
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Accessibility (M’soft)
• 60% working adults in the US - esp. many who are not self-identifying
• ?% people using alternative devices, eg phones?
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Accessibility metadata
• Even if resources are accessibility standards conformant, those that suit an individual user are:– not necessarily accessible to her– not discoverable if they are accessible
ARK-June 2007 [email protected]
Accessibility accommodations
• By lowest common denominator?– W3C WAI standards
• By presumed audience?– Guess work by site developer
• By individual user?– AccessForAll ISO standards
ARK-June 2007 [email protected]
TILE
E-learning environment that enables learner-centric
transformation of learning content and delivery
• Authoring support for transformable content and
Metadata
• Browser
• Learning Object Repository
• Learner Preference System
ARK-June 2007 [email protected]
ARK-June 2007 [email protected]
ARK-June 2007 [email protected]
ARK-June 2007 [email protected]
ARK-June 2007 [email protected]
ARK-June 2007 [email protected]
Accessibility metadata
• Metadata to describe needs and preferences of user
• Metadata to describe accessibility characteristics of resources
• Accessibility service to match resources to needs and preferences
ARK-June 2007 [email protected]
Structural incompatibilitiesuser
achievements aspirations
VCE medicine
opportunities
engineering
UNI TAFE Apprentice
• identity• achievements• aspirations• opportunities• …
Hierarchical vs ‘flat’
Five : Three
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Compatible grammars
Compatible grammars
(http://www.dlib.org/dlib/october00/baker/10baker.html)
ARK-June 2007 [email protected]
Standards conformance
• Clearly defined requirements for local specificity, global interoperability
• Clearly stated standards for structure, syntax and semantics (functional abstract model)
• Process-integrated metadata creation and editing
• Organisational conformance evaluation