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Evolution of Metadata Standards: New Features in ISO 19115 Ted Habermann NOAA National Data Centers September, 2008

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Presentation on theme: "Evolution of Metadata Standards: New Features in ISO 19115 Ted Habermann NOAA National Data Centers September, 2008"— Presentation transcript:

1 Evolution of Metadata Standards: New Features in ISO Ted Habermann NOAA National Data Centers September, 2008

2 Directory Interchange Format ISO – 2 ISO 19115/NAP FGDC Remote Sensing Extensions Evolution of Documentation Standards FGDC NOAA Supplemental NASA EOS Core System Metadata

3 Role of Documentation WWW 's Discovery Understanding Discovery Understanding Discovery Understanding Before 2000's Role of Metadata

4 Question #1 New Standard Emerges: What is the minimum that I need to do to conform to this standard? What is the most that this standard can do for me? The answer is a short list of metadata elements. Depends on 1) understanding of the standard and 2) ingenuity.. The goal of this presentation is to increase understanding of the standard. The ingenuity is up to you.

5 Does data quality vary within the dataset? DQ_Scope + level: MD_ScopeCode + extent [0..1] : EX_Extent + levelDescription [0..*] : MD_ScopeDescription EX_Extent describes the spatial and temporal extent of the quality section. MD_ScopeDescription + attributes : Set + features : Set + featureInstances : Set + attributeInstances : Set + dataset : CharacterString + other : CharacterString MD_ScopeCode + attribute + attributeType + collectionHardware + collectionSession + dataset + series + nonGeographicDataset + dimensionGroup + feature + featureType + propertyType + fieldSession + software + service + model + tile

6 Do you need to track compliance with standards? DQ_ConformanceResult + specification : CI_Citation + explanation : CharacterString + pass : Boolean

7 Do you need to keep track of user problems? MD_Usage + specificUsage : CharacterString + usageDateTime [0..1] : DateTime + userDeterminedLimitations [0..1] : CharacterString + userContactInfo [1..*] : CI_ResponsibleParty

8 Do you need to describe requirements and objectives? MI_Requirement + citation[0..1] : CI_Citation + identifier : MD_Identifier + requestor[1..*] : CI_ResponsibleParty + recipient[1..*] : CI_ResponsibleParty + priority : MI_PriorityCode + requestedDate : MI_RequestedDate + expiryDate : DateTimeMI MI_Objective + identifier[1..*] : MD_Identifier + priority[0..1] : CharacterString + type[0..*] : MI_ObjectiveTypeCode + function[0..*] : CharacterString + extent[0..*] : EX_Extent

9 Do you need to explain why you did things to the data? LI_ProcessStep + description : CharacterString + rationale [0..1] : CharacterString + dateTime [0..1] : DateTime + processor [0..*] : CI_ResponsibleParty + source [0..*]: LI_Source

10 Metadata Standard Selection Guide Do you need to unambiguously identify things using your own namespace? Do you want to manage metadata using a relational or XML database? Do you want to serve metadata using a REST web service? Do you need to identify people in different roles? Do you need different documentation for different parts of your data? Do you need different documentation for different temporal and spatial subsets? Do you need to reference On-Line Resources? Do you need to describe many kinds of aggregations? Does data quality vary within the dataset? Do you need to track compliance with standards? Do you need to use spatial features to describe quality, like grids of quality flags? Do you need to keep track of user problems? Do you need to explain why you did things to the data? Do need to share data with international partners? Yes


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