A Metadata Framework for Resource Discovery of Agricultural Resources EDCL 2001 OAI Workshop September 4-9, Darmstadt, Germany Presented by Irene Onyancha Food and Agricultural Organisation(FAO) of the United Nations Library & documentation Systems Division (GIL) AGRIS/CARIS & Documentation Group
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Presented by Irene Onyancha Food and Agricultural Organisation(FAO) of the United Nations
A Metadata Framework for Resource Discovery of Agricultural Resources EDCL 2001 OAI Workshop September 4-9, Darmstadt, Germany. Presented by Irene Onyancha Food and Agricultural Organisation(FAO) of the United Nations Library & documentation Systems Division (GIL) - PowerPoint PPT Presentation
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A Metadata Framework for Resource Discovery of Agricultural Resources
Food and Agricultural Organisation(FAO) of the United NationsLibrary & documentation Systems Division (GIL)
AGRIS/CARIS & Documentation Group
Overview
Objectives Strategy and methodology adopted Results Implementation aspects compared to generic Dublin Core
Metadata Initiative Benefits to FAO, the Agricultural Community and the OAI Future Developments
Main Objective
To define an interoperability layer using emerging standards to facilitate the efficient dissemination of content of agricultural resource
Specific goals:-
To define a low barrier interoperability layer to aid primary resource discovery
to define a richer interoperability layer to aid secondary and tertiary resource discovery
to describe the application in a machine readable format, XML and RDF
to define a common format to homogenising set results on a search interface that enables parallel searching of heterogeneous archives
to assist the management of resources by data owners
Strategy and methodology adopted
Developed a conceptual map of different types of information resources used in agriculture
Evaluated standards and common resource description practices currently used in the domain of agriculture
Drafted a specification for a Dublin Core (DC) based standard for describing document resources
Gave preference to notation and vocabularies terms used in already established standards and and those used in describing agricultural resources
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. [email protected]
Strategy and methodology adopted Contd..
Results
Unqualified Dublin Core based metadata Set
Qualified Dublin Core based Metadata set
Sample of an output using the application profile on one of the FAO in-house Databases. The AGRIS Archive
Implementation aspects compared to generic Dublin Core Metadata set
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 Authority files for elements and
qualifiers that have secondary information
Benefits of the application profile to FAO, the Agricultural Community and the OAI
Low-barrier interoperability layer that enables harvesting of metadata through the OAI and sharing and exchange of information in the Agricultural Community
Format for describing and maintaining FAO in-house Information Systems
Format for uniform presentation of meta information on the AGRIS Internet Portal
Format to for the AGRIS (Agricultural Information System). This will promote information exchange and self-reliance of data management by data owners especially in the developing countries
Format for a common interface for retrieval of resources from heterogeneous archives: The AGRIS MHS
Future Developments
Encode and publish the application profile both in XML Document Type Definition (DTD) and RDF
Develop software tools in support of the proposed AG standards (Agricultural Standards)
Develop guidelines for the application profile to assist implementers and users
Project to be presented for further discussion at the International DC-2001 Conference to be held in Tokyo, Japan on October 22-26, 2001
Future Developments Contd..
Workshop with FAO Partners and collaborative Governments to discuss the proposed AG standards
Monitor the impact of the proposed standard in the agricultural community
Register the metadata framework with the DCMI Metadata registry
Initiate a pilot project between FAO and Agricultural Subject gateways to provide a single access point for agricultural resources
For more Information...........
Metadata Framework for Resource Discovery of Agricultural Information: An introduction"