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EnParDis Enabling Parameter Discovery
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In the 1980s oceanographic data management handled 20 parameters ... the potential of semantic and ontological tools for dictionary management and ... – PowerPoint PPT presentation
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Title: EnParDis Enabling Parameter Discovery
1
EnParDisEnabling Parameter Discovery
- Roy Lowry, Michael Hughes Laura Bird
- British Oceanographic Data Centre
2
Background
- In the 1980s oceanographic data management
handled lt20 parameters - During the 1990s the number of parameters handled
increased dramatically, largely due to JGOFS - BODC adopted a controlled vocabulary approach to
parameter management - A parameter dictionary with gt9000 entries has
been developed - EnParDis is a project to build on this
3
Background
- BODCs data holdings are marked up with
controlled vocabulary codes - Mark-up requires copious quantities of skilled
labour - In an ideal world the data would be marked up by
scientists using a standard dictionary - This wont happen unless scientists can see
benefits, such as improved data access - EnParDis aims to address this
4
EnParDis Objectives
- Enhance the BODC Parameter Dictionary into a
worthy international standard vocabulary. - Develop interoperability between the BODC
Parameter Dictionary and other organisations
dictionaries. - Examine the potential of semantic and ontological
tools for dictionary management and parameter
discovery.
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EnParDis Work Outline
- Work Package 1
- Map biological entities in the dictionary to ITIS
- Implement ITIS taxonomy as a dictionary parameter
grouping tool
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EnParDis Work Outline
- Work Package 2
- Develop keyword group mappings (SeaSearch and
GCMD) - Investigate feasibility of user-definable
groupings - Investigate techniques to support parameter
interconversions (e.g. unit conversions)
7
EnParDis Work Outline
- Work Package 3
- Expand the BODC dictionary to cover other known
dictionaries - SISMER (France)
- SMHI (Sweden)
- DOD (Germany)
- Pangaea (Germany)
- Rijkwaterstaat (Netherlands)
- US JGOFS
- MEDS (Canada)
- BIO (Canada)
- ICES Contaminants Database
- CF?
- Any others I can find
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EnParDis Work Outline
- Work Package 3 (continued)
- Review the current dictionary
- Revise implementation structure
- Eliminate classification that is hard-coded into
data markup - Improve the clarity of parameter descriptions
- Improve the valid parameter value ranges stored
in the dictionary - Investigate if dictionary could be mapped through
a data model into an ontology
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EnParDis Progress
- WP1 Progress
- ITIS database installed at BODC
- Initial mapping between dictionary biological
entities and ITIS - Over 100 spellings in the dictionary standardised
to ITIS - A couple of errors in ITIS identified and their
correction agreed - 163 additional genera/species submitted to go to
ITIS. A further 81 identified for submission - Access and Web taxonomic browser demonstrators
developed
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EnParDis Progress
- WP1 Taxonomic Browser
- Driven by two tables
- Map between BODC code and ITIS code plus
parameter measured - Implementation of ITIS Taxonomy
- ITIS code plus taxonomy (27 levels) encoded in a
216-byte string - Allows all BODC codes for a given parameter to be
extracted at any taxonomic level (eg abundance in
water column for all species of a given genus)
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EnParDis Progress
- WP1 Next Stage
- Operational implementation of ITIS mapping
- Revision of map design to facilitate operation
with RIKZ DONAR and WADI data models - Map maintenance protocols
- ITIS database update protocols
- Incorporation of demonstrator technology into
BODC data retrieval tools
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EnParDis Progress
- WP2 Progress
- First-cut mapping to GCMD parameter valids
- SEASEARCH groupings implemented (in June)
- WP2 Next Stage
- Consultations with GCMD on their parameter valids
- Implementation of GCMD groupings as an
alternative to SEASEARCH - Look into potential of RDF or OWL for parameter
classification management
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EnparDis Progress
- WP3 Progress
- Work commenced on RIKZ, SISMER and US JGOFS
manual mappings - Dictionary entries in preparation to fill gaps
identified by mappings - Units abbreviated titles standardised (NPL)
- Revised dictionary structure implemented
- WP3 Next Stage
- Continue mappings and dictionary extension
- Research more elegant techniques for large scale
mappings (semantic analysis?) - Data model mapping and ontology research
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Contacting EnParDis
- An e-mail discussion list has been set up for
EnParDis - List address is
- enpardis_at_mailman.nerc-bidston.ac.uk
- URL for subscription to the list
- mailman.nerc-bidston.ac.uk/mailman/listinfo/enpar
dis
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