Table of Contents
Introduction
The core information that conveys the object's identity includes identifiers and titles/labels assigned to it, along with primary and more domain specific types.
Identifier
URI
The URI of the resource, as given in id, is the primary identifier for the object, and the URI at which the description of the object is made available.
{ "@context": "https://linked.art/ns/context/1/full.jsonld", "id": "https://linked.art/example/object/32", "type": "ManMadeObject", "label": "Simple Example Painting", "classified_as": ["aat:300033618","aat:300133025"] }
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Non-URI / Legacy Identifiers
There are often other identifiers available for the object, including local numbers provided by a database or collection management system, accession numbers, or stock numbers. These are recorded as separate resources, with a value and a type, and referenced from the object via the identified_by relationship. This also allows them to be linked to the documentation that asserts the identifier. The different types of identifier can be given via the classified_as property.
The example below expresses two legacy identifiers, an Accession Number (aat:300312355) and a Local Number (aat:300404621) provided by a database system.
{ "@context": "https://linked.art/ns/context/1/full.jsonld", "id": "https://linked.art/example/object/33", "type": "ManMadeObject", "label": "Example Painting", "identified_by": [ { "id": "https://linked.art/example/identifier/4", "type": "Identifier", "label": "Accession Number for Painting", "value": "X198-093", "classified_as": ["aat:300312355"] }, { "id": "https://linked.art/example/identifier/5", "type": "Identifier", "label": "Local Repository Number", "value": 677, "classified_as": ["aat:300404621"] } ], "classified_as": ["aat:300033618","aat:300133025"] }
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Context for Legacy Identifiers
Identifiers are typically assigned when an object is accessioned into a collection, or when technology systems that manage the descriptions of the objects, are updated. It can be useful to associate the identifier with the collection it was minted for. This is done through an intermediary InformationObject which is the set of identifiers used in the collection. That set then refers_to the collection.
{ "@context": "https://linked.art/ns/context/1/full.jsonld", "id": "https://linked.art/example/object/34", "type": "ManMadeObject", "label": "Example Painting", "identified_by": [ { "id": "https://linked.art/example/identifier/6", "type": "Identifier", "value": "P1998-27", "classified_as": ["aat:300312355"], "composed_from": [ { "id": "https://linked.art/example/info/4", "type": "InformationObject", "label": "Paintings Collection Identifiers", "refers_to": [ { "id": "https://linked.art/example/object/35", "type": "PhysicalObject", "label": "Paintings Collection", "classified_as": ["aat:300025976"], "part": ["https://linked.art/example/object/34"] } ] } ] } ], "classified_as": ["aat:300033618","aat:300133025"] }
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Titles
Although the label of the resource should always be included, it is valuable to have more information about the title or titles of the work. Similarly to identifiers, titles are given their own resource with a type and value. It could, again like identifiers, also refer to the documentation where that title was assigned. Unlike books, artworks often change titles or have many different versions assigned to them over time.
Primary Title
The primary title should be given as the label of the object, and also as a Title resource with a value containing the same information. The Primary title should be classified_as the preferred one via aat:300404670. There should be exactly one primary title given per language.
{ "@context": "https://linked.art/ns/context/1/full.jsonld", "id": "https://linked.art/example/object/36", "type": "ManMadeObject", "label": "Peasant and Sheep", "identified_by": [ { "id": "https://linked.art/example/name/10", "type": "Appellation", "value": "Peasant and Sheep", "classified_as": ["aat:300404670"] } ], "classified_as": ["aat:300033618","aat:300133025"] }
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Alternate Titles
Further titles may also be given in the same way, just without the classification as preferred.
{ "@context": "https://linked.art/ns/context/1/full.jsonld", "id": "https://linked.art/example/object/37", "type": "ManMadeObject", "label": "Self Portrait", "identified_by": [ { "id": "https://linked.art/example/name/11", "type": "Appellation", "value": "Self Portrait", "classified_as": ["aat:300404670"] }, { "id": "https://linked.art/example/name/12", "type": "Appellation", "value": "Portrait of the Artist" } ], "classified_as": ["aat:300033618","aat:300133025"] }
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Types
The primary type of the object, normally ManMadeObject is given in the type field. More specific types are given using classified_as, referencing domain specific vocabularies. For a set of commonly used specific types, please see the vocabularies section.
In particular, all objects that are considered to be works of art should be have the "works of art" classification: aat:300133025. This will allow systems to distinguish between art objects and others that may be managed in the same dataset, but are not themselves art. These non-art objects might include tools (pencils, paintbrushes, palette, chisel), documents (a copy of an auction catalog, a letter from the artist), or supporting objects (an aisel, case or shelf).
{ "@context": "https://linked.art/ns/context/1/full.jsonld", "id": "https://linked.art/example/object/38", "type": "ManMadeObject", "label": "Sculpture of a Dragon", "classified_as": ["aat:300047090","aat:300133025"] }
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