identifiers assigned_by people

[azaroth42]

Document that Identifiers can be assigned by groups or people rather than requiring a new classification for each actor that has ever created identifiers.

e.g. a Lugt number is just a regular Identifier, assigned to the auction by Lugt.

Or to associate the accession number with the museum that accessioned the object:

{
  "@context": "https://linked.art/ns/v1/linked-art.json", 
  "id": "http://lod.example.org/museum/HumanMadeObject/0", 
  "type": "HumanMadeObject", 
  "identified_by": [
    {
      "id": "http://lod.example.org/museum/Identifier/0", 
      "type": "Identifier", 
      "_label": "Accession Number", 
      "classified_as": [
        {
          "id": "http://vocab.getty.edu/aat/300312355", 
          "type": "Type", 
          "_label": "Accession Number"
        }
      ], 
      "content": "1997-A1752", 
      "assigned_by": [
        {
          "id": "http://lod.example.org/museum/AttributeAssignment/0", 
          "type": "AttributeAssignment", 
          "_label": "Assignment of 1997-A1752", 
          "general_purpose": [
              {"id": "purpose-of-this-accession-number"}
          ], 
          "timespan": {
              "begin_of_the_begin": "1997-06-16T00:00:00Z",
              "end_of_the_end": "1997-06-17T00:00:00Z"
          },
          "carried_out_by": [
            {
              "id": "http://lod.example.org/museum/Group/0", 
              "type": "Group", 
              "_label": "Example Museum"
            }
          ]
        }
      ]
    }
  ]
}

[edwardanderson]

Can the attribute assignment refer to the publication it is documented in as well as the individual responsible for carrying it out?

For example, Self-portrait, Vincent van Gogh, 1887 has the Jan Hulsker catalogue number JH1211, as recorded in The new complete Van Gogh: paintings, drawings, sketches, Jan Hulsker (1996).

@prefix crm: <http://www.cidoc-crm.org/cidoc-crm/> .

<http://hdl.handle.net/10934/RM0001.COLLECT.9617>
  a crm:E22_Human-Made_Object ;
  crm:P1_is_identified_by [
    a crm:E42_Identifier ;
    crm:P190_has_symbolic_content "JH1211" ;
    crm:P141i_was_assigned_by [
      a crm:E13_Attribute_Assignment ;
      crm:P2_has_type <http://vocab.getty.edu/aat/300157769> ;
      crm:P14_carried_out_by <http://www.wikidata.org/entity/Q395240> ;
      crm:P67i_is_referred_to_by <https://library.rijksmuseum.nl/cgi-bin/koha/opac-detail.pl?biblionumber=101699>
    ]
  ] .

[azaroth42]

Discussion - Some interesting additional use cases around the purpose of the identifier, when it was assigned, and so forth. Base case of who assigned is covered sufficiently by the pattern above, good to move to documentation.

[azaroth42]

Done: https://linked.art/model/assertion/#assigned-value-as-resource