Introduction
Concepts, called Types, are a core part of the model and present in practically every resource description. They give access to external vocabularies, such as the Getty's Art and Architecture Thesaurus, in order to add classifications to entities described. As they are external entities, rather than the focus of the Linked Art documentation, they are only slightly more detailed than any other entity reference, allowing an additional meta-classification to be asserted about the Type.
The Type pattern is also used for more specific concept types:
Language
is used for human-spoken languages, such as SpanishMaterial
is used for the materials that make up a physical thing, such as goldCurrency
is used for the currency of monetary amounts, such as the EuroMeasurementUnit
is used for the unit of measured dimensions, such as inches
Types are described in the base patterns of the model documentation, and examples are present for practically every class.
For full records that describe a Type, please see the Concept Endpoint documentation.
Property Definitions
Properties of Types
Property Name | Datatype | Requirement | Description |
---|---|---|---|
id |
string | Required | The value MUST be a URI identifying the concept |
type |
string | Required | The class of the concept, which MUST be one of the following values: "Type" , "Currency" , "Language" , "Material" , or "MeasurementUnit" |
_label |
string | Recommended | A human readable label for the concept, intended for developers |
equivalent |
array | Optional | An array of references to external resources which are equivalent to the referenced resource |
notation |
array | Optional | An array of strings, each of which is a commonly used notation or identifier for the resource. This is typically used when the type of the reference is Language and gives the language tag. |
classified_as |
array | Optional | An array of json objects, each of which is a further classification of the concept and MUST follow these requirements for Type |
Property Diagram
Incoming Properties
Types and other instances of concepts are typically found as the object of the following properties. This list is not exhaustive, but is intended to cover the likely cases.
Property Name | Source Class | Description |
---|---|---|
classified_as |
All | Almost every entity can be classified as a Type |
technique |
Activity |
Activities (of all sorts) can have a technique, which is modeled as a Type |
motivated_by |
Activity |
Activities can also be motivated by a Type |
about |
LinguisticObject , VisualItem |
Textual and Visual Works can have subjects, which are modeled as Types |
assigned |
AttributeAssignment |
The classification of an object might be assigned as part of a documented Attribute Assignment |
language |
LinguisticObject |
The language of linguistic content is modeled as a Language |
currency |
MonetaryAmount |
The currency of a MonetaryAmount is modeled as a Currency |
unit |
Dimension |
The unit of a Dimension is modeled as a MeasurementUnit |
made_of |
Material |
The materials of a HumanMadeObject are modeled as Materials |
Example
A painting is classified as a painting, which is in turn classified as a type of work.
- It has an
id
of aat:300033618 - It has a
type
of "Type" - It has a human readable
_label
of "Painting" - It is classified as a meta-type, which ...
- ... has an
id
of aat:300435443 - ... also has a
type
of "Type" - ... and has a human readable
_label
of "Type of Work"
- ... has an
{
"@context": "https://linked.art/ns/v1/linked-art.json",
"id": "https://linked.art/example/object/12",
"type": "HumanMadeObject",
"classified_as": [
{
"id": "http://vocab.getty.edu/aat/300033618",
"type": "Type",
"_label": "Painting",
"classified_as": [
{
"id": "http://vocab.getty.edu/aat/300435443",
"type": "Type",
"_label": "Type of Work"
}
]
}
]
}