1. Overview of DLESE Metadata & Catalog System
April 23, 2002

2. Materials in DLESE Laboratory Exercises Conceptual Images
Pedagogy Tutorials
Case Studies/ Virtual Field Trips
Student Portfolios
Tools (e.g. Calculators)
Scientific Papers
Professional Opportunities
Problem Sets
Theme or Portal Sites
Courses
Lesson Plans/ Syllabi
Images, Animations, Video (observed)
Large Data Sets
History of Geoscience
Assessment Tools/ Rubrics
Animations, Applets, Models (simulations)
Large Data Set Tools

3. DLESE-IMS Metadata Framework
Loosely based on IMS
Uses an XML DTD; no data-typing
Describes:
REQUIRED: title, creator, cataloger, description, resource type, technical info., audience, copyright, cost, URL, topic
OPTIONAL: geospatial, keywords, science & geography standards, relationships
No vocabulary enforcement
XML standard is shifting from DTD’s to schemas with OAI choosing to use schemas

4. ADN Metadata Framework
A strongly data-typed common XML-schema based framework for ADEPT, NASA & DLESE
Describes (previous plus more)
geospatial, collection, more educational elements
review, models, temporal (all under development)
Can do error checking at catalog time rather than ingest time
Supports modular framework development
Hybrid of IMS and DC but with specific community-driven fields.

5. Metadata Development Conceptually In Design Planetary Body
Other Planetary Body
Geodetic Reference System
Bounding Box
North/South Coordinates
East/West Coordinates
Vertical
Place-event Name
Detailed Geometry
…..
In Design
Definition & Interpretation:
Technical Implementation:
Cataloging Best Practices:
Tag Set Name:
Obligation:
Maximum Occurrences:
Data Type:
Domain:
Example Entry:
Default Value:
Vocabulary Source:
Vocabulary Terms:

6. Metadata Reality <geoCoverage> <planet></planet>
<otherPlanet></otherPlanet>
<geodetic></geodetic>
<boundBox>
<westCoord></westCoord>
<eastCoord></eastCoord>
…..
</geoCoverage>

7. What can the Catalog System do?
Contribute: create initial metadata records
Discover: provides an internal metadata record search capability using controlled vocabularies & keywords. Can also search over resource content when available
Manage: move & edit; keyword & fielded search, some controlled vocabulary search; QA processes are done here
Share: share records between collections using OAI (not yet implemented)

8. DLESE Catalog System (Specs)
Structure: XML files in flat directories (no database); Uses DLESE-IMS metadata; no ADN
Assumption: unique mapping between library ID and URLs
Underlying Indexes: (what is discoverable)
Metadata index
Resource content index
Technical Specification:
IE 5.x or higher, Netscape: 6.0,
Lucene 1.0, Tomcat 4.0, Java 1.3, JDOM Beta 7

9. Types of Searches Over Metadata (4-22-02)
Metadata Index Search
Manage
Discover
1. Keyword
Over any editable field (includes URL, org) geology:908
Over description, title, topic, resource type & grade level geology: 873
2. Controlled Vocabulary
Implemented over topic, resource type and grade level
+topic:geology: 794
Over topic, resource type & grade level checkbox geology:609
3. Fielded
Over editable fields +topic:geology: 794
+title:geology: 177
Not supported

10. Actual Tasks Catalog your favorite site.
Find all records that Holly Devaul created.
Cataloger Goodman forgets her DLESE ID but knows her resource is about hurricanes.
Find “salinity” resources.

11. Benefits of Catalog System
DLESE
Objects to collections
Collection management
Interoperability with Partners & NSDL
Collection Builders
Integrated system supporting collections development
Can support distributed development
Makes interoperability transparent