Dear All,
Here my homework, a property to denote which kind of property the
attribute assignment is about.
*Old definition* of E13:
E13 Attribute Assignment
Subclass of: E7 <#_E7_Activity> Activity
Superclass of: E14 <#_E14_Condition_Assessment> Condition Assessment
E15 <#_E15_Identifier_Assignment> Identifier Assignment
E16 <#_E16_Measurement> Measurement
E17 <#_E17_Type_Assignment> Type Assignment
Scope note: This class comprises the actions of making
assertions about one property of an object or any single relation
between two items or concepts. The type of the property asserted to hold
between two items or concepts can be described by the property P2 has type.
For example, the class describes the actions of people making
propositions and statements during certain scientific/scholarly
procedures, e.g. the person and date when a condition statement was
made, an identifier was assigned, the museum object was measured, etc.
Which kinds of such assignments and statements need to be documented
explicitly in structures of a schema rather than free text, depends on
whether this information should be accessible by structured queries.
This class allows for the documentation of how the respective assignment
came about, and whose opinion it was. Note that all instances of
properties described in a knowledge base are the opinion of someone. Per
default, they are the opinion of the team maintaining the knowledge
base. This fact must not individually be registered for all instances of
properties provided by the maintaining team, because it would result in
an endless recursion of whose opinion was the description of an opinion.
Therefore, the use of E13 Attribute Assignment marks the fact, that the
maintaining team is in general neutral to the validity of the respective
assertion, but registers someone else’s opinion and how it came about.
All properties assigned in such an action can also be seen as directly
relating the respective pair of items or concepts. Multiple use of E13
Attribute Assignment may possibly lead to a collection of contradictory
values. All cases of properties in this model that are also described
indirectly through a subclass of E13 Attribute Assignment are
characterised as "short cuts" of a path via this subclass. This
redundant modelling of two alternative views is preferred because many
implementations may have good reasons to model either the action of
assertion or the short cut, and the relation between both alternatives
can be captured by simple rules.
Examples:
§ the assessment of the current ownership of Martin Doerr’s silver cup
in February 1997
Properties:
P140 <#_P140_assigned_attribute_to (was att> assigned attribute to (was
attributed by): E1 <#_E1_CRM_Entity> CRM Entity
P141 <#_P141_assigned_(was_assigned by)> assigned (was assigned by): E1
<#_E1_CRM_Entity> CRM Entity
=========================================================================================
*Revision of the first paragraph* of the Scope note:
Scope note: This class comprises the actions of making
assertions about one property of an object or any single relation
between two items or concepts. The type of the property asserted to hold
between two items or concepts can be described by the property /Pxxx
assigned property type/.
*Pxxx assigned property type*
Domain: E13 Attribute Assignment
Range: E55 Type
Subproperty of:E1 <#_E1_CRM_Entity> CRM Entity. P2 has type: E55 Type
Quantification: many to many, necessary (1,n:0,n)
Scope note: This property associates an instance of E13
Attribute Assignment with the type of property or relation that this
assignment maintains to hold between the item to which it assigns an
attribute and the attribute itself. Note that the properties defined by
the CIDOC CRM also constitute instances of E55 Type themselves. The
direction of the assigned property type is understood to be from the
attributed item (the range of property /P140//assigned attribute to/) to
the attribute item (the range of the property /P141 assigned/ ). More
than one property type may be assigned between two items.
Examples:
§ February 1997 Current Ownership Assessment of Martin Doerr’s silver
cup (E13) /assigned property type/ P52 has former or current owner (is
former or current keeper of) (E55)
§ 01 June 1997 Identifier Assignment of the silver cup donated by Martin
Doerr (E15) /assigned property type/ P48 has preferred identifier (is
preferred identifier of) (E55)
In First Order Logic:
Pxxx(x,y) ⊃ E13(x)
Pxxx(x,y) ⊃ E55(y)
====================================================================================
I assume an example with a property type not defined in the CRM may be
useful.
Best,
Martin
--
------------------------------------
Dr. Martin Doerr
Honorary Head of the
Center for Cultural Informatics
Information Systems Laboratory
Institute of Computer Science
Foundation for Research and Technology - Hellas (FORTH)
N.Plastira 100, Vassilika Vouton,
GR70013 Heraklion,Crete,Greece
Vox:+30(2810)391625
Email: [email protected]
Web-site: http://www.ics.forth.gr/isl
