Issue 508: FOL for P170

ID: 
508
Starting Date: 
2020-07-23
Working Group: 
3
Status: 
Done
Closing Date: 
2020-10-20
Background: 

This issue is related to issue 453

 

6/10/2020

Chryssoula

Current Proposal: 

Posted by Martin on 23/7/2020

Dear All,

For:

P170 defines time (time is defined by)
Domain: E61Time Primitive
Range: E52 Time Span
Quantification: many to one (0,1:0,n )

Scope note:         This property associates an instance of E61 Time Primitive with the instance of E52 Time-Span that constitutes the interpretation of the terms of the time primitive as an extent in absolute, real time.

Examples:
▪        (1800/1/1 0:00:00 – 1899/31/12 23:59:59)(E61) defines time The 19th century (E52)
▪        (1968/1/1 – 2018/1/1)(E61) defines time “1968/1/1 – 2018/1/1” (E52) [an arbitrary time-span during which the Saint Titus reliquary was present in the Saint Titus Church in Heraklion, Crete]

In First Order Logic:
                           P170(x,y) ⇒ E61(x)
                           P170(x,y) ⇒ E52(y)
I propose:

                           P170(x,y) ⇒ P81(y,x) ˄ P82(y,x)

Meaning: the respective time-span is exactly ongoing and within the given time primitive.

Posted by George on 6/10/2020

In the last SIG, the issue of the accuracy of the FOL representation of P170 defines time (time is defined by) was raised in issue 508. A better FOL representation was sought for. MD was assigned the HW. 

The previous state was:

P170 defines time (time is defined by)
Domain: E61Time Primitive
Range: E52 Time Span
Quantification: many to one (0,1:0,n )

Scope note:         This property associates an instance of E61 Time Primitive with the instance of E52 Time-Span that constitutes the interpretation of the terms of the time primitive as an extent in absolute, real time.

Examples:
▪        (1800/1/1 0:00:00 – 1899/31/12 23:59:59)(E61) defines time The 19th century (E52)
▪        (1968/1/1 – 2018/1/1)(E61) defines time “1968/1/1 – 2018/1/1” (E52) [an arbitrary time-span during which the Saint Titus reliquary was present in the Saint Titus Church in Heraklion, Crete]

In First Order Logic:
                           P170(x,y) ⇒ E61(x)
                           P170(x,y) ⇒ E52(y)

It is proposed to introduce:

 P170(x,y) ⇒ P81(y,x) ˄ P82(y,x)

Meaning: the respective time-span is exactly ongoing and within the given time primitive.

Please vote on this change. Options: Yes, Yes with Caveat, No with Explanation, to this list.

The vote should be received by Oct 16, 2020. 

Posted by Robert Sanderson on 6/10/2020

YES

Posted by Martin on 6/10/2020

YES

Posted by Øyvind Eide on 9/10/2020

YES

Posted by Christian-Emil on 12/10/2020

YES

Posted by George on 12/10/2020

YES

Posted by Pat on 12/10/2020

Yes.

Posted by Daria Hookk on 12/10/2020

YES

Outcome: 

In 48th CIDOC CRM and 41st FRBR CRM sig meeting (virtual), GB presented the outcome of the e-vote (16 Oct 2020) regarding the addition of the axiom 
P170 (x, y) ⇒ P81 (x, y) ∧ P82 (x, y),  in the FOL section of the definition of P170 defines time (time is defined by), to convey the meaning that the time span in question is exactly ongoing and within the given time primitive. There were 7 votes in favor of adding the axiom, and none against. 

The final definition of P170 in 7.1 can be found here.

The issue closed

October 2020

Reference to Issues: