1. Sharing Metadata Recommendations Ted Habermann, John Kozimor Earth Science The HDF Group thabermann@hdfgroup.org 1 John Farley Raytheon

2. Metadata Recommendations 2 There are many published lists of metadata fields that are required or suggested for addressing a particular documentation need (e.g. discovery, access, use). We call these recommendations. Recommendations generally come from organizations and are many times associated with a specific metadata dialect.

3. Directory Interchange Format 3 Required Recommended Suggested

4. Recommendation Pages 4 http://wiki.esipfed.org/index.php/Category:Documentation_Recommendations CONCEPTSCONCEPTS CONCEPTSCONCEPTS Implementation (dialects) Recommendation References Recommendation References Data Discovery – 8 recommendations Data Accessibility/Usability (Services) – 3 recommendations Data Understanding – 6 recommendations

5. Recommendations / Capabilities Data Discovery ACDD - Highly Recommended, Recommended, Suggested CSW - Core Queryables, Core Returnables, Additional Queryables ISO 19115-1 Resource Discovery Mandatory, Optional, Conditional (Annex F) DCAT Mandatory EOS Core System (HDF-EOS Core) DIF – Required, Highly Recommended ECHO – Mandatory, Recommended FGDC – Mandatory Recommendations Capabilities Accessibility / Usability SERF – Required, Highly Recommended ISO 19115-1 Service Discovery ACDD – Variable Attributes EOS Core System (HDF-EOS Structural) Understanding Data Quality (ISO 19157) Provenance (ISO 19115-1) FGDC – Mandatory if Applicable External References (19115-1) User Feedback EOS Core System (Archive Metadata)

6. Terminology Spiral – A collection of concepts required to support a particular documentation need or use case. Name Location Description Type

7. Recommendations, Concepts and Spirals 7 Different users will want to create/examine guidance based on different sets of recommendations. Spiral Concept Spiral Concept Attribute Convention for Data Discovery (ACDD) Catalog Services for the Web (CSW) 11211 Recommendations

8. Recommendations, Concepts and Spirals 8 Spiral Concept Spiral Concept Attribute Convention for Data Discovery (ACDD) Catalog Services for the Web (CSW) Directory Interchange Format (DIF) 111322 Recommendations Different users will want to create/examine guidance based on different sets of recommendations. Concept Scores depend on the selected recommendations – the selection scenarios.

9. Dialects 9 NASA Directory Interchange Format (DIF) EOSDIS Clearinghouse (ECHO) EOS Core System (ECS) Service Entry Resource Format (SERF) Other Data Catalog Vocabulary (DCAT) FGDC Content Standard for Geospatial Metadata (CSDGM) ISO 19115 and ISO 19115-2 / ISO 19139 and ISO 19139-2 (ISO) ISO 19115-1 / ISO 19115-3 (ISO-1) Our report will include results from eight dialects: Each concept in a recommendation could be represented in any number of dialects.

10. 10 ItemScoreRec 1Rec 2Rec 3 Concept 12xx Concept 21x Concept 32xx Concept 43xxx Union of concepts from all recommendations Concepts in each recommendation Concept score for recommendation set Recommendation Comparison How do Mandatory DIF and FGDC Concepts compare?

11. Dialect Comparison 11 ItemDialect 1Dialect 2Dialect 3 Concept 1xx Concept 2x Concept 3xx Concept 4xx Union of concepts from all dialects Concepts in each dialect How do DIF and ISO-1 capabilities compare?

12. Dialect / Recommendation Comparison 12 RecommendationDialect 1Dialect 2Dialect 3 Concept 1xx Concept 2x Concept 3xx Concept 4xx Maximum Possible Score 232 All concepts in a recommendation Concepts in each dialect How do FGDC, ISO, and ECHO compare to DCAT recommendation?

13. 13 Questions? tedhabermann@hdfgroup.org

14. Acknowledgements 14 This work was partially supported by contract number NNG10HP02C from NASA. Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author and do not necessarily reflect the views of NASA or The HDF Group.