search and find metadata in education
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Phelim Bradley, Mark Moriarty
2011-08-05
Search and Find: Metadata in Education
Topics we'll coverWhat we've been doing this year and this summer.
Meta-Data - what is it? Why have standards?
Quick overview to most prominent Meta-Data standards.
Unfortunate lack of sustainability in OER space. Dried up standards organizations. Static repositories.
Not education-specific tools being used.
Who are we?
(And what do we know?)
What is metadata?
Describe:
The metadata might look like this.
Artist Leonardo da Vinci
Year c. 1503–1519
Type Oil on poplar
Dimensions 77 cm × 53 cm (30 in × 21 in)
Location Musée du Louvre, Paris
Creator da Vinci, Leonardo
Title Mona Lisa
Start Date 1503
End Date 1519
Paint Oil
Dimensions Portrait, 4081cm2
Location Musée du Louvre, Paris, France
Or...like this.
Standards
Artist Surname, Firstname
Title Mona Lisa
Start Date DD/MM/YYYY
End Date DD/MM/YYYY
Type Paint type on canvas
Dimensions length x width in centimeters
Location building, city, country.
Meta-Data for Educational Resources
Well, what is an educational resource?
What defines something as a "learning object"?
What "high level data" would one want to know about educational resources?
What metadata NOT!
Meta-Data for Educational Resources at the moment.
Two prominent standards are:• IEEE LOM = Institute of Electrical and Electronic Engineers
Learning Object Meta-Data• DC = Dublin Core Education
Individual online repositories / institutions have tweaked these general standards to create custom "application profiles".
IEEE LOM (Learning Object Meta-Data)
IEEE LOM (Learning Object Meta-Data)
<classification><taxonpath> <source><langstring>Topics</langstring></source><taxon> <id>http://www.research.ibm.com/elearn#webservices</id> <entry> <langstring>Web Services</langstring> </entry></taxon></taxonpath></classification>
IEEE LOM (Learning Object Meta-Data)
DON'T PANIC!!!
Publishing Online Content
People do what's easy.
from Wordpress to Wikis to YouTube. Simplicity is key.
Creative Commons to the rescue!
LRMI"The Learning Resource Metadata Initiative is a project co-led by Creative Commons to build a common metadata vocabulary for educational resources."
http://wiki.creativecommons.org/LRMI
http://schema.org/docs/schemas.html
The problem with standards(is that there's so many of them).One standard to rule them all?
Phelim Bradley, Mark Moriarty
2011-08-05
http://Phel.im http://MarkMoriarty.com
Meta-Data~Data about data.
Ex. high-level data about a specific file, in this case, a song:"ID3v1..introduced in 1996: By adding a small chunk of extra data in the end of the file one could get the MP3 file to carry information about the audio and not
just the audio itself. "Song Title 30 characters
Artist 30 characters
Album 30 characters
Year 4 characters
Comment 30 characters
Genre 1 byte
http://www.id3.org/ID3v1
Dublin Core (DC)
There are 15 elements that can be described using DC.
A survey of sites using DC done in 2007 assigned a score of 1 if the field was actually used, and 0 if the field was not used. The average scores for 23 sites are shown.“DC Element usage (Proportion of records with at least one entry)” source: Miles Efron, Texas - Journal of Digital Information ,Vol 8, No 2 (2007)
Dublin Core (DC)
There are 15 elements that can be described using DC.
A survey of sites using DC done in 2007 assigned a score of 1 if the field was actually used, and 0 if the field was not used. The average scores for 23 sites are shown.“DC Element usage (Proportion of records with at least one entry)” source: Miles Efron, Texas - Journal of Digital Information ,Vol 8, No 2 (2007)
IEEE LOM (Learning Object Meta-Data)
<classification><taxonpath> <source><langstring>Topics</langstring></source><taxon> <id>http://www.research.ibm.com/elearn#webservices</id> <entry> <langstring>Web Services</langstring> </entry></taxon></taxonpath></classification>
IEEE LOM (Learning Object Meta-Data)<general><title> <langstring xml:lang="en">Introduction to WSDL </langstring> </title></general>
<typicallearningtime> <datetime>PT69S</datetime> </typicallearningtime>
<classification><taxonpath> <source><langstring>Topics</langstring></source><taxon> <id>http://www.research.ibm.com/elearn#webservices</id> <entry> <langstring>Web Services</langstring> </entry></taxon></taxonpath></classification>
IEEE LOM Application ProfilesWho's adopted it?
Capabilities and Weaknesses of Each
Talk
Who/What creates meta-data anyway?
What meta-data do we really need?
Meta-data is expensive.
The meta-data you require depends on your objective... are you searching as a student for notes? Generally browsing a topic out of interest? A professor creating a syllabus?
Lessons Learned
What two physicists have begun to conclude...
Questions?
(or jokes?)