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Not Provided Values

The CMR team (NASA and SciOps) are in the difficult position of trying to make a coherent and useful metadata repository by collecting metadata from many organizations and projects that have different goals and needs.  This presents a challenge as the CMR evolves and new requirements emerge. Metadata managers need to account for content that is not provided by the metadata providers. At the current time, this is between three and five percent of the content.

The solution for both NASA provided collections and SciOps provided collection is to add the string “Not provided” to expected fields that have no content. This clearly indicates that content is missing, except that tools that read the metadata or translate it must be aware of and consider this convention to get meaningful results. The tools we use for evaluating metadata completeness are agnostic to element and attribute values.  Therefore the analysis presented below, which compares NASA Complete with SciOps Complete does not include metadata fields with a value of 'Not Provided'.  Below are the fields with 'Not Provided' values that were excluded from NASA Complete with SciOps Complete evaluation

NASA Collections - Fields with ‘Not Provided values'

/gmi:acquisitionInformation/gmi:instrument/gmi:type

/gmd:identificationInfo/gmd:pointOfContact/gmd:organisationName

/gmd:identificationInfo/gmd:abstract

/gmd:identificationInfo/gmd:descriptiveKeywords/gmd:keyword

/gmd:identificationInfo/gmd:resourceConstraints/gmd:useLimitation

/gmd:contentInfo/gmd:processingLevelCode/gmd:code

/gmd:identificationInfo/gmd:pointOfContact/gmd:individualName

/gmi:acquisitionInformation/gmi:instrument/eos:sensor/eos:type

/gmd:contact/gmd:organisationName

/gmi:acquisitionInformation/gmi:platform/gmi:identifier/gmd:code

/gmd:contentInfo/gmd:dimension/gmd:otherProperty/gco:Record/eos:AdditionalAttributes/eos:AdditionalAttribute/eos:reference/eos:description

/gmd:identificationInfo/gmd:processingLevel/gmd:code

/gmi:acquisitionInformation/gmi:platform/gmi:description

/gmd:identificationInfo/gmd:status/gmd:MD_ProgressCode

Sciops Collection - Fields with ‘Not Provided values'

/gmd:identificationInfo/gmd:processingLevel/gmd:code

/gmd:identificationInfo/gmd:citation/gmd:edition

/gmi:acquisitionInformation/gmi:platform/gmi:description

/gmd:identificationInfo/gmd:descriptiveKeywords/gmd:keyword

/gmd:contentInfo/gmd:dimension/gmd:otherProperty/gco:Record/eos:AdditionalAttributes/eos:AdditionalAttribute/eos:reference/eos:description

/gmi:acquisitionInformation/gmi:instrument/gmi:type

/gmi:acquisitionInformation/gmi:platform/gmi:identifier/gmd:code

/gmd:identificationInfo/gmd:status/gmd:MD_ProgressCode

/gmd:contentInfo/gmd:processingLevelCode/gmd:code

/gmd:identificationInfo/gmd:citation/gmd:identifier/gmd:version

SciOps vs. NASA

This analysis compares item  usage (elements and attributes) in the 18 NASA collection with the 25 SciOps collections.  This evaluation identifies items which exist in collections as well as items that are complete in collections.  In order for an item to exist in a collection it must be present in at least 1 metadata record included in the collection. In order for an item to be complete in a collection it must be present in all metadata records included in the collection. 

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Chart 2: NASA Complete vs SciOps Complete

Accessing the Chart

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To access the data for this chart, click on the chart graphic above to view an interactive version in Google Sheets.  The interactive version enables data identification for each bubble and includes a look up table for identifying the ISO items associated with the bubble. To access and use the interactive version:

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• View just Elements
• View just Attributes

 

 

 

 

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