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Lecture given to Digital Libraries class on different sorts of digital libraries and repositories, with a focus on repositories for learning materials
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When is a digital library not a digital library?
R. John Robertson,Digital Libraries4th May 2006
Overview
Digital Libraries Digital Asset Management
The MANDATE project Designing an asset management system
Digital Libraries
What is a digital library?"Digital libraries are organizations that
provide the resources, including the specialized staff, to select, structure, offer intellectual access to, interpret, distribute, preserve the integrity of, and ensure the persistence over time of collections of digital works so that they are readily and economically available for use by a defined community or set of communities“ (Digital Library Federation, 1999).
Digital Libraries
What is the purpose of a digital library? to select, structure, offer intellectual access to, interpret, distribute, preserve the integrity of, and ensure the
persistence over time of
Digital Libraries
What can you tell about the purpose of the following digital libraries?
What type of materials do they hold?
What points of access do they offer to these materials?
Digital Libraries
Purpose Type Access
Alexandria Digital Library
NSDL
ACM
Perseus Digital Library
Digital Libraries: Implications
What information do you need to store to support each of these sorts of access? Geospatial co-ordinates Educational levels Author/ publisher Title
Digital Libraries: Metadata
“Metadata is data about data. The term refers to any data used to aid the identification, description and location of networked electronic resources.”
Variety of schemas design to meet local needs but be able to interoperate on some level with other digital libraries Examples: MARC 21; DC; IEEE LOM
Digital Libraries: metadata schemas
Title Creator
Subject Description
Publisher Contributor
Date Type
Format Identifier
Source Language
Relation Coverage
Rights
"SIGNPOSTS" DATA
100 1# $a Arnosky, Jim.245 10 $a Raccoons and ripe corn /
$c Jim Arnosky.
250 ## $a 1st ed.
260 ## $a New York :$b Lothrop, Lee & Shepard Books,$c c1987.
300 ## $a 25 p. :$b col. ill. ;$c 26 cm.
520 ## $a Hungry raccoons feast at night in a field of ripe corn.
650 #1 $a Raccoons.
900 ## $a 599.74 ARN
901 ## $a 8009
903 ## $a $15.00
METS header
descriptive metadata
administrative metadata
file section
structural map
structural links
behaviour
Digital Asset Management
Digital Libraries are one type of digital asset store; what are the others?
Loosely speaking two archetypes digital library and content management
Guideline differences between digital library and content management – structured intellectual access, priority of distribute,
Largely same skill set and issues
Digital Asset Management: Mandate Introduction
Year–long project examining digital asset management in Further Education (Nov 04 –Nov 05)
Purpose To inform the FE sector about good practice
and preservation issues Funding
JISC Outcomes
a toolkit for digital asset management in FE and case study of its application at John Wheatley College
Digital Asset Management : Toolkit Strategy
Purpose of an asset management strategy Development of an asset management strategy Managing the development of a strategy
Asset Types Metadata
Metadata requirements Metadata standards Metadata quality
Workflow Interoperability Preservation Legislation Software Training
Digital Asset Management : Strategy Purpose of an asset management strategy
Who is it for? Staff Students Public
What is it for? Management Access Preservation
What is it going to manage? College documents [y] College learning materials [y] External assets [y] Research materials Finance documents Personnel documents
Digital Asset Management : Strategy Development of an digital asset management
strategy What has to happen to achieve this strategy?
What issues are implicit in these purposes? What issues are implicit in the selection of asset types?
What are the existing people, practices, and structures? How are these assets managed currently? How can existing structures be incorporated /used? What data already exists electronically? Why is being aware of this important?
The system supports the strategy not the other way around (if you build it without them, they will not come).
Digital Asset Management : Metadata Metadata requirements
What points of access are required? What other information is required?Bibliographic (e.g. "a picture of the Eiffel tower taken by
Bob") Administrative (e.g. "taken on 19/04/2005") Legal (e.g. "all rights reserved") Preservation (e.g. "requirement to view as jpeg") Technical (e.g. "jpeg format" ; "85.8kb file") Educational (e.g. "an illustration of construction using cast
iron"; "UK Education Level 11") Structural (e.g. "single file") What of the above metadata is essential? What of the above metadata is secondary
(optional or removed)?
Digital Asset Management : Implementation Who is the best agent to create each of
these metadata elements? What resources are available? Do the available resource require
compromises in the strategy or the metadata?
Digital Asset Management : Exercise Within FE what do you think could be
generalised about: the purpose of a digital asset management
strategies? the asset types involved? the key points of access? the general context?
Digital Asset Management : context Issues for digital asset management in FE (sample
answers) Purpose of institution
Teaching – strategy and system must support and not hinder teachers
Resources available Limited - integration with existing practices vital; human
overhead of using system must be minimal Use of materials
Key points of access – tie into course, educational as well as bibliographic description
Shelf-life of materials Course life; external determined typically < 3 years Curation beyond this is in conflict with the purpose of the
institution Ownership of materials
Blanket policy – college’s property
Conclusions
Skills and issues in construction and operation of systems for digital asset management are generally similar to library and information science skills needed for digital libraries
Digital asset management / digital library design – revolves around key questions of context, resources, and needs
Further Reading/ Questions
Digital Library Definitions LIS 462 – Definitions http://web.simmons.edu/~schwartz/462-defs.html
Toolkithttp://mandate.cdlr.strath.ac.uk/
QuestionsJohn Robertson Rm 12:12