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June 28 Telecon

posted Jun 27, 2010, 9:05 PM by Joshua Lieberman   [ updated Jun 28, 2010, 7:50 AM ]
Agenda:

Registries and Clearinghouse
  • Use of clearinghouse for AIP-3 metadata record experiments
  • Practice for depositing / registering vocabularies / ontologies


Attending:

Josh Lieberman, Nadine Alameh, Steve Browdy, Joan Maso, Stefan Falke

Discussion:

Semantics
  • Coordination needed between GEO ontology task and AIP-3 semantics group, but the GEO task is going very slowly.
  • Steve - presentations only change very little.

Clearinghouse
  • Steve - lots of functional testing involved of all three clearinghouses, using the Eliot Christian Z39.50 tool. USGS clearinghouse did much better. Not clear why that work went into Yang's group.
  • Consolidated clearinghouse requirements document - registries, clearinghouses, portals.
  • Connection to AIP-3:
    • Can GEOSS Common Record (GCR) metadata be harvested?
    • Can the clearinghouse be queried for GCR mapped from other harvested metadata?

Common Record
  • Addition of Data Quality Status -
  • Joan - connected to GEO "Label" expression of data quality for GEOSS use.
  • Josh - tend to have the problem of needing "quality of metadata" measures, or meta-metadata, which is not yet well standardized
  • Stefan - within air community, quality propagation and provenance is a concern. QA4EO may be concerned with this, but focus and current activity seem to be on cross-calibration, not propagation or documentation
  • Stefan - contextual metadata issue - who else has used data, what are its limitations or intended use? Connection between quality and suitability. Potential conflict with GEOSS goal of "unintended use".
  • Josh - in particular, data product may be correlated with / derived from another product which someone else tests / corroborates with the first product. Can we suggest test of these particular examples of inappropriate usage.
  • Data quality flags from EPA --- need to see whether those are general, and also useful. Tend to be for individual values, such as "outside of calibration range"

Actions:
  • Josh - check with Doug Nebert / Phil Yang about clearinghouse support for GCR
  • Joan - review ISO Core values for completeness
  • Steve - link to consolidated requirements
  • Nadine - Check with George on workshop outcomes - task coordination
  • Stefan - more generalized data quality flags


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