nancy morgan gem project coordinator [email protected]
TRANSCRIPT
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Sponsored by
U.S. Department of Education’s
National Library of Education
Special Project ofERIC Clearinghouse on Information
& Technology
Syracuse University
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Presentation Outline• What is GEM? • Timeline• Technical Implementation/Tools• GEM Element Set• GEM Profile• Dublin Core
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The Gateway to Educational Materials (GEM)
GEM is a consortium effort to provide educators with quick and easy access to the substantial, but uncataloged, collection of educational materials found on various federal, state, university, non-
profit, and commercial Internet sites.
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Timeline
Nov ‘96
Dublin Core
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Timeline
Nov ‘96
Dublin Core
June ‘97
Beta -Tools & Catalog
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Timeline
Nov ‘96
Dublin Core
June ‘97
Beta -Tools & Catalog
Cataloging begins
Sept ‘97
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Timeline
Nov ‘96
Dublin Core
June ‘97
Beta -Tools & Catalog
Dec ‘97
Cataloging begins
Sept ‘97
700 records8 collections
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Timeline
Nov ‘96
Dublin Core
June ‘97
Beta -Tools & Catalog
Dec ‘97
Cataloging Begins
Oct ‘98
3000 records45 collections
Sept ‘97
700 records8 collections
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Model for “Distributing” GEM Metadata–
GEM Tools
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Resources
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Resources
SeparateMetadata
EmbeddedMetadata
Metadata
Metadata
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Resources
SeparateMetadata
EmbeddedMetadata
Metadata
Metadata
Harvest
Harvest
Local Site
Index
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Resources
SeparateMetadata
EmbeddedMetadata
Metadata
Metadata
Harvest
Harvest
Local Site
IndexUnion
The Gateway
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Resources
SeparateMetadata
EmbeddedMetadata
Metadata
Metadata
Harvest
Harvest
Local Site
IndexUnion
The Gateway
Search
Browse
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GEM Tools
• GEMCat Cataloging Module
• Cross site Harvest
• Browse-builder
• PLWeb Search Engine
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Metadata Continuum
Simple& Terse
Complex& Rich
Lycos Dublin Core USMARCLocation Discovery Documentation
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Metadata Continuum
Simple& Terse
Complex& Rich
Lycos Dublin Core USMARCLocation Discovery Documentation
GEM Level 1Cataloging
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Metadata Continuum
Simple& Terse
Complex& Rich
Lycos Dublin Core USMARCLocation Discovery Documentation
GEM Level 1Cataloging
GEM Level 2Cataloging
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GEM Element Set
23 Elements
• 15 Dublin Core
• 8 GEM Elements
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GEM Element Set• Audience• Duration• Essential Resources• Grade Level• Pedagogy• Academic Standards• Quality Indicators• Cataloging Agency
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GEM Element Set
Controlled Vocabularies:
• Audience• Format• Grade Level• Pedagogy• Resource Type• Subject
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GEM Element Set
Fully DC compliant:
• All optional
• All repeatable
• Anyone can use, anyway they like
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GEM Profile 1999The rules for implementing the 23 DC/GEM
Elements in The Gateway Catalog:
• Mandatory and Optional
• Repeatable and not repeatable
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GEM Profile 1999
Consists of:
• 8 GEM Elements
• 13 Dublin Core Elements
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GEM Profile 1999
Do Not Use:
Other Contributor
Use:
Creator (role)
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GEM Profile 1999
Do Not Use:
Source
Use:
Relation (is source of)
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Dublin Core:Current Thoughts
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Dublin Core
What would help:• standardize DC simple• establish/adopt/recommend ”core”
subelements• schedule for standardizing subelements• DC WWW site - latest information
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Dublin Core
Dublin Core Works!!
• Optional • Qualifiers • Schemes • Extensibility
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Contact:
Documentation:
http://www.geminfo.org
The Gateway Catalog:
http://www.thegateway.org