Examples
Worked examples
- Is an instance
https://n2t.net/ark:/12345/x54xz321? returning Dublin Core metadata for the object.
- Is an instance
https://n2t.net/ark:/12345/x54xz321?? returning a persistence policy statement.
Counter-examples
Looks similar, but isn't
- Not an instance
A DOI does not support the '?' or '??' inflections in the ARK sense.
- Not an instance
A URL with a query string '?lang=fr' is not an ARK inflection.
Editorial commentary
Inflections are a distinctive design choice of ARK that separates an identifier from its ‘inflected’ metadata views without minting separate identifiers. The single-question-mark inflection is intended for machine-readable metadata; the double-question-mark inflection is intended for human-readable persistence commitments. ARK-conforming resolvers honour these inflections by serving the appropriate response for the underlying object.
References
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Also known as
ARK ? and ?? convention
Machine-readable encodings
Use in your systems
<role vocab="credit"
vocab-identifier="https://casrai.org/dictionary/"
vocab-term="ARK inflection rules"
vocab-term-identifier="https://casrai.org/dictionary/term/ark-inflection-rules" />{
"@context": "https://schema.org",
"@type": "DefinedTerm",
"name": "ARK inflection rules",
"identifier": "https://casrai.org/dictionary/term/ark-inflection-rules",
"description": "A convention of the ARK identifier scheme whereby appending a single '?' to an ARK URL yields the object's descriptive metadata and appending '??' yields a 'commitment statement' describing the issuing institution's persistence policy for that ARK.",
"inDefinedTermSet": "https://casrai.org/dictionary/domain/the-persistent-identifier-ecosystem/",
"url": "https://casrai.org/dictionary/term/ark-inflection-rules",
"sameAs": [
"ARK ? and ?? convention"
],
"license": "https://creativecommons.org/licenses/by/4.0/"
}
