CG Core Metadata Reference Guide

This page provides a list of the metadata elements that are used in the CG Core metadata schema. The CG Core metadata schema is an application profile and is built from existing standards as much as possible. It is an effort led by the Big Data Platform Metadata Working Group of the CGIAR.

The CG Core aims to describe all types of information products that are published by the different CGIAR centres. There are many benefits of having a clear and harmonised way to describe information products:

better interoperability
better transparency
easy monitoring

This document provides guidelines on how to use the CG Core metadata schema and provides examples on how to use it. An RDF version of the application profile will be available soon.

Metadata Properties

identifier title description type language license rightsHolder accessRights subject issued embargoDate creator contributor coverage relation hasMetadata

identifier Property
Identifier	http://purl.org/dc/terms/identifier
Definition	An unambiguous reference to the resource within a given context.
Comments	Recommended best practice is to identify the resource by using a DOI or an handle
Examples

title Property
Identifier	http://purl.org/dc/terms/title
Definition	A name given to the resource
Comments	Follow standard title formatting for capitalization and punctuation.
Examples	`Managing for timber and biodiversity in the Congo basin` `A 2007 Social Accounting Matrix for China` `2012 Global Hunger Index Data`

description Property
Identifier	http://purl.org/dc/terms/description
Definition	Description may include but is not limited to: an abstract, a table of contents, a graphical representation, or a free-text account of the resource.
Comments	Descriptive details significantly improve discoverability via search engines such as Google and Bing, and will aid interlink between related resources at the meta-search/indexer level. Descriptions can be provided in multiple languages if appropriate and available.
Examples

type Property
Identifier	http://purl.org/dc/terms/type
Definition	The nature or genre of the resource
Comments	Must be populated with a value from the local Type and subType lists
Examples	`Datafile`

language Property
Identifier	http://purl.org/dc/terms/language
Definition	A language of the resource.
Comments	ISO 639-2 (alpha-3)
Examples	`eng`

license Property
Identifier	http://purl.org/dc/terms/license
Definition	A legal document giving official permission to do something with the resource.
Comments	List of licenses from SPDX
Examples	`http://creativecommons.org/licenses/by/4.0/legalcode`

rightsHolder Property
Identifier	http://purl.org/dc/terms/rightsHolder
Definition	A person or organisation owning or managing rights over the resource.
Comments
Examples	`CIAT`

accessRights Property
Identifier	http://purl.org/dc/terms/accessRights
Definition	Information about who can access the resource or an indication of its security status. Access Rights may include information regarding access or restrictions based on privacy, security, or other policies.
Comments	Values should come from the following list: "open", "restricted"
Examples	`open`

subject Property
Identifier	http://purl.org/dc/terms/subject
Definition	keywords describing the subject of the information product.
Comments	To be used to link the resource to one or more concept
Examples

issued Property
Identifier	http://purl.org/dc/terms/issued
Definition	Date of formal issuance (e.g., publication) of the resource
Comments	The date when the information product was created in its final form to be published
Examples

embargoDate Property
Identifier	http://purl.org/cg/terms/embargoDate
Definition	In cases when the information product has an embargo this date indicates when it would be available.
Comments
Examples

creator Property
Identifier	http://purl.org/dc/terms/creator
Definition	To be used to link the resource to one or more creator objects
Comments	This term is intended to be used with non-literal values
Examples

contributor Property
Identifier	http://purl.org/dc/terms/contributor
Definition	To be used to link the resource to one or more contributor objects
Comments	This term is intended to be used with non-literal values
Examples

coverage Property
Identifier	http://purl.org/dc/terms/coverage
Definition	To be used to link the resource to one or more coverage objects
Comments	This term is intended to be used with non-literal values
Examples

relation Property
Identifier	http://purl.org/dc/terms/relation
Definition	A related resource
Comments	This term is intended to be used with non-literal values. Should be use to link a dataset to its related publication(s) and reciprocally
Examples

hasMetadata Property
Identifier	http://purl.org/cg/terms/hasMetadata
Definition	A related resource that is the metadata record for the measured variables of the described dataset
Comments	This term is intended to be used with non-literal values.
Examples

Metadata Classes

Concept

label vocab identifier

concept Class
Identifier	http://purl.org/cg/terms/concept
Definition	A a unit of thought e.g. skos:concept, owl:class or simple keywords
Comments
Examples

label Property
Identifier	http://www.w3.org/2000/01/rdf-schema#label
Definition	The label of the concept
Comments	Should be the preferred label if a concept has several labels
Examples

vocab Property
Identifier	http://purl.org/cg/terms/vocab
Definition	Source of the concept
Comments	One of the following: AGROVOC, GACS, AgrO, CO
Examples	`AGROVOC`

identifier Property
Identifier	http://purl.org/dc/terms/identifier
Definition	URI of the concept
Comments
Examples	http://aims.fao.org/aos/agrovoc/c_7771

Contributor

contributor name type

contributor Class
Identifier	http://purl.org/cg/terms/contributor
Definition	Organisation, or service making contributions to the information product.
Comments	describe one of the following: "Project", "Project Lead Entity", "Partner", "CRP", "Donor"
Examples

name Property
Identifier	http://xmlns.com/foaf/0.1/name
Definition	The name identifying the contributor
Comments	for donors, recommendation to use crossref Donors registry for CRPs and Project Lead Entity, recommendation to use CLARISA entity list for partners, recommendation to use CLARISA institution list
Examples

type Property
Identifier	http://purl.org/dc/terms/type
Definition	The type of contributor the contributor
Comments	one of these values: "Project", "Project Lead Entity", "Partner", "CRP", "Donor"
Examples

Coverage

type spatial coverage temporal coverage label identifier code xCoord yCoord

coverage Class
Identifier	http://purl.org/cg/terms/coverage
Definition	Spatial or temporal coverage
Comments
Examples

type Property
Identifier	http://purl.org/dc/terms/type
Definition	The nature or genre of the coverage information
Comments	Must be populated with a value coming from the coverage type list
Examples	`spatial` `temporal` `region` `country` `administrative Unit` `AEZ` `X` `Y`

spatial Property
Identifier	http://purl.org/dc/terms/spatial
Definition	Spatial characteristics of the resource.
Comments
Examples

temporal Property
Identifier	http://purl.org/dc/terms/temporal
Definition	Temporal characteristics of the resource.
Comments	Should point to an interval of time that is named or defined by its start and end dates.
Examples

label Property
Identifier	http://www.w3.org/2000/01/rdf-schema#label
Definition	Label of the spatial zone
Comments
Examples

identifier Property
Identifier	http://purl.org/dc/terms/identifier
Definition	Identifier of the spatial unit
Comments
Examples

code Property
Identifier	http://purl.org/cg/terms/code
Definition	Code of the agroecological zone as defined by FAO
Comments
Examples	`101`

xCoord Property
Identifier	http://purl.org/cg/terms/xCoord
Definition	x coordinate, in decimal degrees
Comments
Examples

yCoord Property
Identifier	http://purl.org/cg/terms/yCoord
Definition	y coordinate, in decimal degrees
Comments
Examples

Creator

identifier affiliation name

creator Class
Identifier	http://purl.org/cg/terms/creator
Definition	The author(s), researcher(s), scientist(s) responsible for producing the information product
Comments
Examples

identifier Property
Identifier	http://purl.org/dc/terms/identifier
Definition	ORCID
Comments
Examples

affiliation Property
Identifier	http://purl.org/cg/terms/affiliation
Definition	the affiliation of the creator
Comments	Must be populated with a value coming from the CLARISA institution list or the grid list
Examples	`Bioversity International`

name Property
Identifier	http://xmlns.com/foaf/0.1/name
Definition	The full name identifying the creator
Comments
Examples

Scientific Publication

Scientific Publication Class
Identifier	http://purl.org/cg/terms/ScientificPublication
Definition	Specific Information Product type covering publications
Comments
Examples

abstract Property
Identifier	http://purl.org/dc/terms/abstract
Definition	A summary of the resource
Comments	refines dct:description
Examples

bibliographicCitation Property
Identifier	http://purl.org/dc/terms/bibliographicCitation
Definition	A bibliographic reference for the resource
Comments	Recommended practice is to include sufficient bibliographic detail to identify the resource as unambiguously as possible. Refines dct:identifier
Examples

publisher Property
Identifier	http://purl.org/dc/terms/publisher
Definition	An entity responsible for making the resource available
Comments	Here, the publisher of the scientific publication
Examples

issn Property
Identifier	http://purl.org/cg/terms/issn
Definition	Used to record ISSN number
Comments	Refines dct:identifier
Examples

isbn Property
Identifier	http://purl.org/cg/terms/isbn
Definition	Used to record ISBN number
Comments	Refines dct:identifier
Examples

peer-reviewed Property
Identifier	http://purl.org/cg/terms/peer-reviewed
Definition	If the resource has been peer reviewed
Comments
Examples	true is peer-reviewed, not used if not

Alternative Title Property
Identifier	http://purl.org/dc/terms/alternative
Definition	An alternative name for the resource.
Comments	refines dct:title
Examples

howpublished Property
Identifier	http://purl.org/cg/terms/howpublished
Definition	How it was published, if the publishing method is nonstandard
Comments
Examples

journal Property
Identifier	http://purl.org/cg/terms/journal
Definition	The journal name
Comments
Examples

booktitle Property
Identifier	http://purl.org/cg/terms/booktitle
Definition	The title of the book, if only part of it is being cited
Comments
Examples

chapter Property
Identifier	http://purl.org/cg/terms/chapter
Definition	The chapter number
Comments
Examples

pages Property
Identifier	http://purl.org/cg/terms/pages
Definition	Page numbers
Comments
Examples

volume Property
Identifier	http://purl.org/cg/terms/volume
Definition	The volume of a journal or multi-volume book
Comments
Examples

number Property
Identifier	http://purl.org/cg/terms/number
Definition	The "(issue) number" of a journal, magazine, or tech-report
Comments
Examples

extent Property
Identifier	http://purl.org/dc/terms/extent
Definition	The size or duration of the resource
Comments
Examples	`p. 1159-1179` `47 p.` `185-211 p.` `65(2): 200-206` `1-13`

series Property
Identifier	http://purl.org/cg/terms/series
Definition	The series of books the book was published in
Comments
Examples	`Lecture Notes in Computer Science`

edition Property
Identifier	http://purl.org/cg/terms/edition
Definition	The edition of a book, long form
Comments
Examples	`First Edition`

notes Property
Identifier	http://purl.org/cg/terms/notes
Definition	Miscellaneous extra information related to a scientific publication
Comments
Examples

audience Property
Identifier	http://purl.org/dc/terms/audience
Definition	A class of entity for whom the resource is intended or useful.
Comments	Should be populated using 'Agent Class', which include groups seen as classes, such as students, women, charities, lecturers.
Examples	`Students`

isPartOf Property
Identifier	http://purl.org/dc/terms/isPartOf
Definition	A related resource in which the described resource is physically or logically included
Comments	Should be used to link a book to a series
Examples