13 subject

Definition: metadata schema block containing the subject area of the RAiD plus associated properties

Requirement: recommended

Occurrence: 0-n

Example JSON

{
  "subject": [
    {
      "id": "https://linked.data.gov.au/def/anzsrc-for/2020/310305",
      "schemaUri": "https://vocabs.ardc.edu.au/viewById/316",
      "keyword": [
        {
          "text": "kelp forest",
          "language": {
            "id": "eng",
            "schemaUri": "https://www.iso.org/standard/74575.html"
          }
        },
        {
          "text": "marine heatwave",
          "language": {
            "id": "eng",
            "schemaUri": "https://www.iso.org/standard/74575.html"
          }
        }
      ]
    }
  ]
}

13.1 subject.id

Definition: identifier (URI) for a subject area or classification code describing the project or activity

Requirement: mandatory for each subject supplied

Occurrence: 1

Allowed values: closed controlled list of URIs derived from the schema chosen at subject.id.schemaUri

Example(s):

13.2 subject.schemaUri

Definition: the URI of the subject identifier schema

Requirement: mandatory for each subject supplied

Occurrence: 1

Allowed values: open controlled list of URIs defined at https://vocabulary.raid.org/subject.schemaUri/scheme

Other subject schemas can be nominated by Registration Agencies.

13.3 subject.keyword

Definition: metadata schema sub-block containing free-text keyword describing a project plus associated properties

Requirement: optional

Occurrence: 0-n

13.3.1 subject.keyword.text

Definition: unconstrained keyword or key phrase describing the project or activity

Requirement: mandatory for each subject.keyword supplied

Occurrence: 1

Allowed values: free text

Constraints: do not duplicate Subject(s) above

13.3.2 subject.keyword.language

Definition: metadata schema sub-block declaring the language of the subject keyword text

Requirement: recommended for each subject.keyword.text supplied

Occurrence: 0-1

Example JSON

{
  "language": {
    "id": "eng",
    "schemaUri": "https://www.iso.org/standard/74575.html"
  }
}

13.3.2.1 subject.keyword.language.id

Definition: language used for the subject keyword text identified by a code or other identifier

Requirement: mandatory for each subject.keyword.language supplied

Occurrence: 1

Allowed values: closed controlled list derived from subject.keyword.language.schemaUri

Example(s): eng

Note: Individual codes are not listed here, unlike other closed lists in this schema, because ISO 639:2023 (Set 3) contains several thousand language codes. Browse the full list at https://iso639-3.sil.org/code_tables/639/data.

13.3.2.2 subject.keyword.language.schemaUri

Definition: the URI of the language identifier schema

Requirement: mandatory for each subject.keyword.language supplied

Occurrence: 1

Allowed values: closed controlled list of allowed language schemas defined at https://vocabulary.raid.org/subject.keyword.language.schemaUri/245

  • https://www.iso.org/standard/74575.html (ISO 639:2023 Code for individual languages and language groups (Set 3))

Default: https://www.iso.org/standard/74575.html, the only value in this closed controlled list

Constraints: currently limited to ISO 639:2023 (Set 3)