Indianapolis Museum of Art (IMA) Collection Mapping

Introduction

An example mapping of IMA Collection Metadata to Linked.Art

Datasource

https://github.com/IMAmuseum/ima-collection

A collection of JSON files, each representing a single work of art.

Sample Record

Data file https://github.com/IMAmuseum/ima-collection/blob/master/json/objects/0038000/0038020.json

Local copy of data file

Collection Record http://collection.imamuseum.org/artwork/65338/

Google Street view of the location https://goo.gl/maps/UFpRnKGEbbTxqFEQ6

Google Street view map of the location

{
    "accession_number": "80.825.86", 
    "| Actor        |s": [
        {
            "ULAN": {
                "Name": "Joseph Mallord William Turner", 
                "UlanIdNo": "500026846"
            }, 
            "after_follower": null, 
            "birth_date": "1775", 
            "collaboration": null, 
            "death_date": "1851", 
            "display_name": "Joseph Mallord William Turner", 
            "first": "Joseph", 
            "fullname": "Joseph M. Turner", 
            "irn": 626263, 
            "last": "Turner", 
            "middle": "Mallord William", 
            "nationality": null, 
            "organization": null, 
            "party_type": "Ulan", 
            "role": "Artist"
        }, 
        {
            "ULAN": {
                "Name": "Basire, James II", 
                "UlanIdNo": null
            }, 
            "after_follower": null, 
            "birth_date": "1769", 
            "collaboration": null, 
            "death_date": "1822", 
            "display_name": "Basire, James II", 
            "first": null, 
            "fullname": "Basire, James II", 
            "irn": 1790, 
            "last": "Basire, James II", 
            "middle": null, 
            "nationality": null, 
            "organization": null, 
            "party_type": "ULAN", 
            "role": "Engraver"
        }
    ], 
    "creation_date": "1806", 
    "credit_line": "Bequest of Kurt F. Pantzer", 
    "cultures": [], 
    "dimensions": null, 
    "dynasty": null, 
    "images": [], 
    "irn": 38020, 
    "materials": "engraving", 
    "on_view": false, 
    "period": null, 
    "printers": [], 
    "publishers": [], 
    "rights": null, 
    "title": "View of Exeter College from the Turl"
}

Data Dictionary

Entity Field name Description
Artwork irn Artwork IMA id
Artwork title Artwork title
Artwork period Artwork period
Artwork rights Artwork rights
Artwork dynasty Artwork dynasty
Artwork on_view Artwork - is it on view?
Artwork materials Artwork - materials used
Artwork dimensions Artwork - dimensions
Artwork credit_line Credit line
Artwork creation_date Artwork creation date
Artwork accession_number Artwork IMA accession number
Actor irn IMA ID
Actor last last name
Actor role Role in relation to the Artwork
Actor first first name
Actor middle middle name
Actor fullname full name
Actor birth_date birth date
Actor death_date death date
Actor party_type
Actor nationality nationality
Actor display_name display name
Actor organization organization
Actor collaboration
Actor after_follower
Actor ULAN - Name ULAN name
Actor UlanIdNo ULAN Identifier

IMA Model

The model for the artwork is divided into two main parts: * the description of the artwork * description of actors and their role in relation to the artwork

The Artwork

{
    "accession_number": "80.825.86", 
    "creation_date": "1806", 
    "credit_line": "Bequest of Kurt F. Pantzer", 
    "cultures": [], 
    "dimensions": null, 
    "dynasty": null, 
    "images": [], 
    "irn": 38020, 
    "materials": "engraving", 
    "on_view": false, 
    "period": null, 
    "printers": [], 
    "publishers": [], 
    "rights": null, 
    "title": "View of Exeter College from the Turl"
}

The artwork is described as an instance of an engraving.

The minimum JSON-LD representation for the engraving is as follows:

{
    "@context": "https://linked.art/ns/v1/linked-art.json", 
    "id": "http://imamuseum.org/mercury/load-artwork/38020", 
    "type": "HumanMadeObject", 
    "_label": "View of Exeter College from the Turl"
}

The _label is a human readable label, intended for developers and other people reading the data. The value has been taken from the record's title field.

The materials field has the value 'engraving' that we can use to classify the artwork as being a type of engraving. Using the recommendedGetty's Art and Architecture Thesaurus (AAT), the term engraving is matched with a term in the AAT that describes engravings that are a type of prints, with an identifier http://vocab.getty.edu/page/aat/300041340.

The type of the object (an instance of the class HumanMadeObject) is an engraving http://vocab.getty.edu/page/aat/300041340:

{
  "@context": "https://linked.art/ns/v1/linked-art.json", 
    "id": "http://imamuseum.org/mercury/load-artwork/38020", 
    "type": "HumanMadeObject", 
    "_label": "View of Exeter College from the Turl"
  "classified_as": [
    {
      "id": "http://vocab.getty.edu/page/aat/300041340",
      "type": "Type",
      "_label": "Engraving"
    },
    {
      "id": "http://vocab.getty.edu/aat/300133025",
      "type": "Type",
      "_label": "Work of Art"
    }
  ]
}

Refer to https://linked.art/model/base/ for further information.

The Linked Art model supports classification of types of types, e.g. classification of an engraving as being a type of work:

{
  "@context": "https://linked.art/ns/v1/linked-art.json", 
    "id": "http://imamuseum.org/mercury/load-artwork/38020", 
    "type": "HumanMadeObject", 
    "_label": "View of Exeter College from the Turl"
  "classified_as": [
    {
      "id": "http://vocab.getty.edu/page/aat/300041340",
      "type": "Type",
      "_label": "Engraving",
      "classified_as": [
        {
          "id": "http://vocab.getty.edu/aat/300435443",
          "type": "Type",
          "_label": "Type of Work"
        }
      ]
    },
    {
      "id": "http://vocab.getty.edu/aat/300133025",
      "type": "Type",
      "_label": "Work of Art"
    }
  ]
}

Names

The Linked Art model recommends every resource should be rendered with at least one specific name. In this example, the title value will be used for the name of the artwork.

{
  "@context": "https://linked.art/ns/v1/linked-art.json", 
    "id": "http://imamuseum.org/mercury/load-artwork/38020", 
    "type": "HumanMadeObject", 
    "_label": "View of Exeter College from the Turl"


"identified_by": [
    {
      "type": "Name",
      "classified_as": [
        {
          "id": "http://vocab.getty.edu/aat/300404670",
          "type": "Type",
          "_label": "Primary Name"
        }
      ],
      "content": "View of Exeter College from the Turl",
      "language": [
        {
          "id": "http://vocab.getty.edu/aat/300388277",
          "type": "Language",
          "_label": "English"
        }
      ]
    }
  ]
}

Identifiers

The engraving has identifiers associated with it: * accession_number - a unique number assigned by IMA as a means of identifying the artwork * irn - IMA local identifier


 "@context": "https://linked.art/ns/v1/linked-art.json", 
    "id": "http://imamuseum.org/mercury/load-artwork/38020", 
    "type": "HumanMadeObject", 
    "_label": "View of Exeter College from the Turl"


"identified_by": [
    {
      "type": "Identifier",
      "classified_as": [
        {
          "id": "http://vocab.getty.edu/aat/300312355",
          "type": "Type",
          "_label": "IMA Accession Number"
        }
      ],
      "content": "80.825.86"
    },
    38020
    {
      "type": "Identifier",
      "classified_as": [
        {
          "id": "http://vocab.getty.edu/aat/300312355",
          "type": "Type",
          "_label": "IMA irn"
        }
      ],
      "content": "38020"
    }
  ]
}

Statements about the Artwork

Where human-readable strings are provided in the metadata that cannot be linked to specific ontology terms, they are modelled as a LinguisticObject in Linked Art. The credit_line field is an example of a human-readable strings in the IMA record: * credit_line


```json

 {
"@context": "https://linked.art/ns/v1/linked-art.json", 
"id": "http://imamuseum.org/mercury/load-artwork/38020", 
"type": "HumanMadeObject", 
"_label": "View of Exeter College from the Turl",

"referred_to_by": [
{
  "type": "LinguisticObject",
  "classified_as": [
    {
      "id": "http://vocab.getty.edu/aat/300435429",
      "type": "Type",
      "_label": "Material Statement",
      "classified_as": [
        {
          "id": "http://vocab.getty.edu/page/aat/300435418",
          "type": "Type",
          "_label": "Credit line"
        }
      ]
    }
  ],
  "content": "Kurt F. Panzer",
  "language": [
    {
      "id": "http://vocab.getty.edu/aat/300388277",
      "type": "Language",
      "_label": "English"
    }
  ]
}
]
}

Production of the Artwork

The creation_date field refers to a creation event, that can be modelled as a Production activity https://linked.art/model/object/production.

The date is represented using two properties, begin_of_the_begin and end_of_the_end. As only the year is provided, the begin date is represented as 00:00:00 1 Jan 1806, and the end date is 23:59:59 31 Dec 1806.

{
"@context": "https://linked.art/ns/v1/linked-art.json", 
"id": "http://imamuseum.org/mercury/load-artwork/38020", 
"type": "HumanMadeObject", 
"_label": "View of Exeter College from the Turl",
    "created_by": {
        "type": "Production",
        "timespan": {
          "type": "TimeSpan", 
          "begin_of_the_begin": "1806-01-01T00:00:00Z", 
          "end_of_the_end": "1806-12-31T23:59:59Z"
        },
        "carried_out_by": [
            {
                "id": "http://vocab.getty.edu/ulan/500026846",
                "type": "Person",
                "_label": "Joseph Mallord William Turner"
            }
        ]
    }

}

Depiction

https://linked.art/model/object/aboutness/#depiction

The engraving shows a place, identified in the title field as 'View of Exeter College from the Turl', that can be described according to a Linked Art model depiction. With additional information, this location can be identified as being located in Oxford.


{
    "@context": "https://linked.art/ns/v1/linked-art.json", 
    "id": "http://imamuseum.org/mercury/load-artwork/38020", 
    "type": "HumanMadeObject", 
    "_label": "View of Exeter College from the Turl",

    "shows": [
    {
      "type": "VisualItem",
      "represents": [
        {
        "id": "http://vocab.getty.edu/page/tgn/7011931",
        "type": "Place",
        "_label": "Oxford",
        "classified_as": [
            {
            "id": "http://vocab.getty.edu/aat/300008389",
            "type": "Type",
            "_label": "City"
            }
        ],
        "identified_by": [
            {
            "type": "Name",
            "content": "Oxford"
            }
        ],
        }
      ]
    }
  ]

}

The mapping approach is: * The engraving is an object * The irn and accession_number values are identifiers with collection-specific contexts * The credit_line indicates a bequest activity involving the engraving and a person whose name is "Kurt F. Panzer" * The creation_date provides the year that the engraving was created * The title provides the title or name for the engraving * The engraving shows a place, identified in the titlefield as Exeter College, that can be described according to a Linked Art model depiction * The credit_line information is a note associated with the object, modelled in the same way as other descriptive texts. * The materials and dimension fields describe the physical characteristics of the artwork * The rights field provides rights information about the artwork * The printers and publishers fields indicate that some records contain details of printers and publishers that are associated with artworks. This example, does not contain that information, however. * The on_view field refers to whether the artwork is currently on display, and is out of scope for the Linked Art data model * The engraving hasperiod, dynasty and cultures properties, although these are not populated in the example record

Actors in relation to Artwork

{
    "| Actor        |s": [
        {
            "ULAN": {
                "Name": "Joseph Mallord William Turner", 
                "UlanIdNo": "500026846"
            }, 
            "after_follower": null, 
            "birth_date": "1775", 
            "collaboration": null, 
            "death_date": "1851", 
            "display_name": "Joseph Mallord William Turner", 
            "first": "Joseph", 
            "fullname": "Joseph M. Turner", 
            "irn": 626263, 
            "last": "Turner", 
            "middle": "Mallord William", 
            "nationality": null, 
            "organization": null, 
            "party_type": "Ulan", 
            "role": "Artist"
        }, 
        {
            "ULAN": {
                "Name": "Basire, James II", 
                "UlanIdNo": null
            }, 
            "after_follower": null, 
            "birth_date": "1769", 
            "collaboration": null, 
            "death_date": "1822", 
            "display_name": "Basire, James II", 
            "first": null, 
            "fullname": "Basire, James II", 
            "irn": 1790, 
            "last": "Basire, James II", 
            "middle": null, 
            "nationality": null, 
            "organization": null, 
            "party_type": "ULAN", 
            "role": "Engraver"
        }
    ]
}

The mapping approach is: * UlanIdNo ULAN name authority id for actor * Name ULAN name authority text label for actor * after_follower * birth_date and death_date birth and death dates for person * full_name, display_name, first, last and middle represent name of person * nationality person's nationality * organization - name of actor if an organisation instead of a person? * party_type * role - role of person/organisation in relation to the artwork