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A Dublin Core Application Profile in the Agricultural Domain

This article discusses the FAO's mandate to provide useful information in the agricultural domain and its approach to fight hunger with information through WAICENT. The FAO collaborates in information networks and has developed a metadata standard for information exchange. The article presents the objectives, strategy, methodology, and results of implementing the standard, as well as its applications.

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A Dublin Core Application Profile in the Agricultural Domain

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  1. A Dublin Core Application Profile in the Agricultural Domain Irene Onyancha, Johannes Keizer, Stefano Anibaldi and Stephen Katz, Food and Agriculture Organization of the United Nations Library and Documentation Systems Division

  2. The Mandate of FAO • Goal of FAO is to reduce hunger in the world • WAICENT (World Agricultural Information Center) is FAO’s approach to fight hunger with information • FAO itself produces huge amount of content in it’s subject area • It is also within FAOs mandate to make available useful information from other information providers • FAO collaborates in information networks

  3. Overview • Objectives • Strategy and Methodology • Results • Applications

  4. Objectives • promoting the use of metadata • creating an exchange format between heterogeneous matadata repositories • FAO catalogue of webpages • FAO documents and publication catalogue • AGRIS network of documentation centres • ………. • providing an exchange format that makes possible a layered use. Unqualified Dublin Core as a minimum requirements, but qualifiers to accept also the richer metadata from various systems • encoding the exchange format in a machine readable language (XML, RDF)

  5. Strategy and Methodology • Focused on description of document resources but will proceed to define other types of resources such as projects, other multimedia resources such as photos, maps etc. • Identified a pool of core elements of which we used the DC guidelines to define respective qualifiers • Made a full description of each element and qualifier using the ISO standards for element description • Discussed the proposal on various agricultural forums both in-house and external, including at the Agstandards Mailing list. Agstandards@yahoogroups.com

  6. Results: Implementation aspects • Merged the DC elements Creator, Contributor and Publisher to one main element which we named Creator • Dropped the element Source and elaborated the element Relation to include information of the source • Proposed a new core element, Target Audience • Proposed new qualifiers that are not represented in the generic DC guidelines • Proposed the use of various controlled vocabularies for elements and qualifiers

  7. Application: A DTD for the Qualified Meta Data Set • A DTD has been written to test the specifications for their capacity to deliver a common exchange format • Sample of an output using the application profile on one of the FAO in-house Databases. The AGRIS Archive <!ELEMENT Resource (Creator+ , Title , Rights* , Language* , Description* , Subject+ , Coverage* , Relation* , Date , Identifier , Type* , Format* , TargetAudience* )> <!ATTLIST Resource id CDATA #REQUIRED > <!ELEMENT Creator (CorporateAuthor* , PersonalAuthor* , Publisher* )> <!ELEMENT Title (MainTitle , AlternativeTitle? , TitleSupplement* )> <!ELEMENT Rights (Statement* , TermsOfUse* , Patent? )> <!ELEMENT Description (Abstract* , Notes* , Holdings* , TableOfContents* )> <!ELEMENT Subject (SubjectClassification* , LocalTerm? , Thesaurus* )>

  8. AG standards Application Profile The AGRIS MHS - an application candidate Client Http://cfs.zadi.de Request Search Result Information Systems at FAO AGRIS-Server Requests Search Results Distributed Databases

  9. Future Developments • Workshop with FAO Partners and representatives from Member States to discuss the proposed specifications • Presentation of the proposal on the Conference on Agricultural Information Management (COAIM) for endorsement by FAO members for establishment of a standard • Implementation of the “AgStandards” proposal as general Exchange format in the AGRIS network • Multihost search applications within the FAO domain using the “AGStandards” specification • Pilotproject for cross gateway searching between various Information providers in the subject area (FAO,Novagate, NAL, CG network)

  10. For more Information........... • - Proceedings of the Conference, page 185 • http://www.fao.org/agris/MagazineArchive/MetaData/Introduction.doc • Presentation of a metadata set for the description of agricultural documents and document-like resources • it provides the elements and qualifiers of the proposed standard, presented in a hierarchical structure. • http://www.fao.org/agris/MagazineArchive/MetaData/PresentationSet.doc • Element Description for Agricultural Information Resources • it provides a more detailed description of all the elements and qualifiers, including information on definitions, rules, and data typing. • http://www.fao.org/agris/MagazineArchive/MetaData/ElementFinal.doc

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