Catching up with some long-overdue reading and have found 4 articles of particular interest for their informative descriptions of some current issues in metadata.
State of the Art and Future Directions
An April 2008 JISC document about Metadata for digital libraries by Richard Gartner
Standards
Anyone who is a regular Ariadne reader will already know about an updating on what is happening in the various standards worlds:
Sarah Currier’s overview of current initiatives in standards for educational metadata:
Metadata for Learning Resources: An Update on Standards Activity for 2008
From the article:
This article does not aim to be a critical look at such initiatives; it simply aims to give readers with an interest in educational metadata a snapshot of the current landscape, both for easy reference, and to encourage wider participation in these standards activities. The major areas of development covered in this article are:
- LOM Next: plans for the next version of the IEEE LOM.
- The Joint DCMI/IEEE LTSC (Learning Technology Standards Committee) Taskforce: bringing together the two major metadata standards used for learning resources, and providing an RDF translation for the LOM.
- DC-Education Application Profile (DC-Ed AP): a modular application profile purely looking at educational aspects of resources, based on community requirements.
- The United Kingdom’s Joint Information Systems Committee Learning Materials Application Profile (JISC LMAP) scoping study : working alongside a number of similar projects looking at application profiles for repositories in other areas, e.g. images.
- International Standards Organisation Metadata for Learning Resources (ISO MLR): based primarily in Canada, this international standards body is devising a new international standard for educational metadata, in response to perceived limitations of the IEEE LOM.
- The European Commission’s PROLEARN Harmonisation of Metadata project: a study into the issues and challenges of achieving harmonisation in metadata, given the heterogeneous landscape
Harmonization (including metadata reuse issues across different abstract models)
The second is Harmonization of Metadata Standards (January 21, 2008 ) edited by Mikael Nilsson:
Contents:
1. INTRODUCTION
2. THE NOTION OF METADATA
3. METADATA STANDARDS
4. HARMONIZATION
4.1 Abstract Model standards
4.2 Vocabulary standards
4.2.1 Element vocabularies
4.2.2 Value vocabularies
4.3 Syntax standards
4.4 Application profiles
5. CHALLENGES FOR HARMONIZATION
5.1 Application Profiles in DC and LOM
5.2 Identifying and reusing elements
5.3 Requirements for application profiles
5.4 Summary of obstacles
6. ADDRESSING THE HARMONIZATION ISSUES
Reuse of database/resources for research
Another looking at resource reuse issues in research and database repositories is a chapter titled Ontology Reuse Metadata Model from a 2007 digital dissertation by Elena Pâslaru-Bontaş, A Contextual Approach to Ontology Reuse.
Thanks for posting on my Ariadne article Neil.
An important and positive update to the article is now needed, with reference to the ISO MLR standardisation work.
Since it was completed in April there has been significant progress with ISO MLR; members of the two other main educational metadata standards communities (IEEE LOM and DC-Education) are working closely with the ISO JTC1 SC36 Working Group 4 on ensuring that all three of these standards are potentially interoperable. My apologies to the ISO MLR folks if my coverage of their work in the Ariadne article appeared overly negative: the timing of the completion and publication of my article, and further positive developments at ISO, was unfortunate. However, the article does note that working together had already started, and in fact we have already incorporated the ISO MLR use cases into the DC-Education Application Profile requirements gathering- more will be announced on that soon. I think the additional news noted below shows without doubt that all three metadata bodies are extremely committed to working together on interoperability, which is great for everyone.
To read more about this, see the WG4 project resolutions from March 2008, available here:
http://isotc.iso.org/livelink/livelink/fetch/2000/2122/327993/806742/4920436/4920313/WG4_N0257_Resolutions_of_the_2008-03_Jeju_WG4_Meeting.pdf?nodeid=7224951&vernum=0
See in particular Resolution 6:
“Resolution 6: MLR Interoperability (Semantic Technologies)
“WG4 notes the expert contribution made in Jeju related to documents WG4 N0238 & WG4 N0255 and the concern expressed regarding the proliferation of incompatible abstract models. There was a consensus at the Jeju WG4 meeting that this concern needs to be addressed and can be informed by the work of the DCMI/IEEE LTSC LOM task force.
“WG4 requests Mr. Erlend Øverby, Mr. Tore Hoel, Mr. Jon Mason, Mr. Peter Karlberg and Mr. Mike Collett to explore the possibility of how these issues could be resolved, for example by a project subdivision related to an Abstract Model for MLR in time for the Stuttgart WG4 meeting.
“WG4 invites NBLOs and experts to provide contributions. These contributions must be sent to the convener before 2008-06-01.
Approved: unanimous”
The original comment to WG4 that resulted in the above resolution is available here:
http://isotc.iso.org/livelink/livelink/fetch/2000/2122/327993/806742/4920436/4920313/WG4_N0238_Requirements_for_ISO_MLR__interoperability.pdf?nodeid=7121268&vernum=0
Work has begun on providing the expert contributions invited: please contact Mikael Nilsson in his role as co-lead on the DCMI/IEEE LTSC Taskforce if you want to know more: mikael@nilsson.name Wiki here: http://dublincore.org/educationwiki/DCMIIEEELTSCTaskforce
Sarah Currier
Moderator, DC-Education Community
Comment by Sarah Currier — June 3, 2008 @ 9:05 pm
An important and positive update to the Standards article linked above is now needed, with reference to the ISO MLR standardisation work.
Since it was completed in April there has been significant progress with ISO MLR; members of the two other main educational metadata standards communities (IEEE LOM and DC-Education) are working closely with the ISO JTC1 SC36 Working Group 4 on ensuring that all three of these standards are potentially interoperable. My apologies to the ISO MLR folks if my coverage of their work in the Ariadne article appeared overly negative: the timing of the completion and publication of my article, and further positive developments at ISO, was unfortunate. However, the article does note that working together had already started, and in fact we have already incorporated the ISO MLR use cases into the DC-Education Application Profile requirements gathering- more will be announced on that soon. I think the additional news noted below shows without doubt that all three metadata bodies are extremely committed to working together on interoperability, which is great for everyone.
To read more about this, see the WG4 project resolutions from March 2008, available here: http://tiny.cc/tb3vT
See in particular Resolution 6:
“Resolution 6: MLR Interoperability (Semantic Technologies)
“WG4 notes the expert contribution made in Jeju related to documents WG4 N0238 & WG4 N0255 and the concern expressed regarding the proliferation of incompatible abstract models. There was a consensus at the Jeju WG4 meeting that this concern needs to be addressed and can be informed by the work of the DCMI/IEEE LTSC LOM task force.
“WG4 requests Mr. Erlend Øverby, Mr. Tore Hoel, Mr. Jon Mason, Mr. Peter Karlberg and Mr. Mike Collett to explore the possibility of how these issues could be resolved, for example by a project subdivision related to an Abstract Model for MLR in time for the Stuttgart WG4 meeting.
“WG4 invites NBLOs and experts to provide contributions. These contributions must be sent to the convener before 2008-06-01.
Approved: unanimous”
The original comment to WG4 that resulted in the above resolution is available here: http://tiny.cc/CJxcu
Work has begun on providing the expert contributions invited: please contact Mikael Nilsson in his role as co-lead on the DCMI/IEEE LTSC Taskforce if you want to know more: mikael@nilsson.name Wiki here: http://dublincore.org/educationwiki/DCMIIEEELTSCTaskforce
Best wishes to all,
Sarah
Comment by neilgodfrey — June 3, 2008 @ 9:23 pm