Cidoc conceptual Reference Model



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E28 Conceptual Object


Subclass of: E71 Man-Made Thing

Superclass of: E55 Type

E89 Propositional Object

E90 Symbolic Object


Scope note: This class comprises non-material products of our minds and other human produced data that have become objects of a discourse about their identity, circumstances of creation or historical implication. The production of such information may have been supported by the use of technical devices such as cameras or computers.
Characteristically, instances of this class are created, invented or thought by someone, and then may be documented or communicated between persons. Instances of E28 Conceptual Object have the ability to exist on more than one particular carrier at the same time, such as paper, electronic signals, marks, audio media, paintings, photos, human memories, etc.
They cannot be destroyed. They exist as long as they can be found on at least one carrier or in at least one human memory. Their existence ends when the last carrier and the last memory are lost.

Examples:



  • Beethoven’s “Ode an die Freude” (Ode to Joy) (E73)

  • the definition of “ontology” in the Oxford English Dictionary

  • the knowledge about the victory at Marathon carried by the famous runner

  • ‘Maxwell equations’ [preferred subject access point from LCSH,

http://lccn.loc.gov/sh85082387, as of 19 November 2012]

  • ‘Equations, Maxwell’ [variant subject access point, from the same source]

In First Order Logic:

E28(x) ⊃ E71(x)
Properties: P149 is identified by (identifies): E75 Conceptual Object Appellation

E29 Design or Procedure


Subclass of: E73 Information Object
Scope note: This class comprises documented plans for the execution of actions in order to achieve a result of a specific quality, form or contents. In particular it comprises plans for deliberate human activities that may result in the modification or production of instances of E24 Physical Thing.
Instances of E29 Design or Procedure can be structured in parts and sequences or depend on others. This is modelled using P69 has association with (is associated with)..
Designs or procedures can be seen as one of the following:


  1. A schema for the activities it describes

  2. A schema of the products that result from their application.

  3. An independent intellectual product that may have never been applied, such as Leonardo da Vinci’s famous plans for flying machines.

Because designs or procedures may never be applied or only partially executed, the CRM models a loose relationship between the plan and the respective product.

Examples:


      • the ISO standardisation procedure

      • the musical notation for Beethoven’s “Ode to Joy”

      • the architectural drawings for the Kölner Dom in Cologne, Germany

      • The drawing on the folio 860 of the Codex Atlanticus from Leonardo da Vinci, 1486-1490, kept in the Biblioteca Ambrosiana in Milan

In First Order Logic:

E29(x) ⊃ E73(x)
Properties:

P68 foresees use of (use foreseen by): E57 Material

P69 has association with (is associated with): E29 Design or Procedure

(P69.1 has type: E55 Type)


E30 Right


Subclass of: E89 Propositional Object
Scope Note: This class comprises legal privileges concerning material and immaterial things or their derivatives.
These include reproduction and property rights.
Examples:

  • copyright held by ISO on ISO/CD 21127

  • ownership of the “Mona Lisa” by the Louvre

In First Order Logic:

E30(x) ⊃ E89(x)

E31 Document


Subclass of: E73 Information Object

Superclass of: E32 Authority Document


Scope note: This class comprises identifiable immaterial items that make propositions about reality.
These propositions may be expressed in text, graphics, images, audiograms, videograms or by other similar means. Documentation databases are regarded as a special case of E31 Document. This class should not be confused with the term “document” in Information Technology, which is compatible with E73 Information Object.
Examples:

  • the Encyclopaedia Britannica (E32)

  • The image content of the photo of the Allied Leaders at Yalta published by UPI, 1945 (E38)

  • the Doomsday Book

In First Order Logic:

E31(x) ⊃ E73(x)
Properties:

P70 documents (is documented in): E1 CRM Entity


E32 Authority Document


Subclass of: E31 Document
Scope note: This class comprises encyclopaedia, thesauri, authority lists and other documents that define terminology or conceptual systems for consistent use.
Examples:

In First Order Logic:

E32(x) ⊃ E31(x)
Properties:

P71 lists (is listed in): E1 CRM Entity


E33 Linguistic Object


Subclass of: E73 Information Object

Superclass of: E34 Inscription

E35 Title
Scope note: This class comprises identifiable expressions in natural language or languages.
Instances of E33 Linguistic Object can be expressed in many ways: e.g. as written texts, recorded speech or sign language. However, the CRM treats instances of E33 Linguistic Object independently from the medium or method by which they are expressed. Expressions in formal languages, such as computer code or mathematical formulae, are not treated as instances of E33 Linguistic Object by the CRM. These should be modelled as instances of E73 Information Object.

The text of an instance of E33 Linguistic Object can be documented in a note by P3 has note: E62 String

Examples:


  • the text of the Ellesmere Chaucer manuscript

  • the lyrics of the song "Blue Suede Shoes"

  • the text of the Jabberwocky by Lewis Carroll

  • the text of "Doktoro Jekyll kaj Sinjoro Hyde" (an Esperanto translation of Dr Jekyll and Mr Hyde)

In First Order Logic:

E33(x) ⊃ E73(x)
Properties:

P72 has language (is language of): E56 Language

P73 has translation (is translation of): E33 Linguistic Object



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