Concept References

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 Spanish
Material is used for the materials that make up a physical thing, such as gold
Currency is used for the currency of monetary amounts, such as the Euro
MeasurementUnit 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
`influenced_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"

{
  "@context": "https://linked.art/ns/v1/linked-art.json",
  "id": "https://linked.art/example/object/13",
  "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"
        }
      ]
    }
  ]
}

graph TD classDef object stroke:black,fill:#E1BA9C,rx:20px,ry:20px; classDef actor stroke:black,fill:#FFBDCA,rx:20px,ry:20px; classDef type stroke:red,fill:#FAB565,rx:20px,ry:20px; classDef name stroke:orange,fill:#FEF3BA,rx:20px,ry:20px; classDef dims stroke:black,fill:#c6c6c6,rx:20px,ry:20px; classDef infoobj stroke:#907010,fill:#fffa40,rx:20px,ry:20px classDef timespan stroke:blue,fill:#ddfffe,rx:20px,ry:20px classDef place stroke:#3a7a3a,fill:#aff090,rx:20px,ry:20px classDef event stroke:#1010FF,fill:#96e0f6,rx:20px,ry:20px classDef literal stroke:black,fill:#f0f0e0; classDef classstyle stroke:black,fill:white; O1(object/13) class O1 object; O1-- type -->O1_0[HumanMadeObject] class O1_0 classstyle; O2(aat:300033618) class O2 type; O2-- type -->O2_0[Type] class O2_0 classstyle; O2-- _label -->O2_3("''Painting''") class O2_3 literal; O3(aat:300435443) class O3 type; O3-- type -->O3_0[Type] class O3_0 classstyle; O3-- _label -->O3_3("''Type of Work''") class O3_3 literal; O2-- classified_as -->O3 O1-- classified_as -->O2

Other Representations: JSON-LD (raw) | JSON-LD (playground) | Turtle (raw) | Turtle (styled)