Open koslambrou opened 3 years ago
I would like to support this request.
Some humanities projects are already referencing the Erlangen CRM when using these properties, even though they are not implemented in the Erlangen CRM.
In a CIDOC CRM technical paper Implementing the CIDOC Conceptual Reference Model in RDF (2020) Doerr and Light further specify the guidelines for P81a, P81b, P82a and P82b:
The range of the properties "P81 ongoing throughout" and "P82 at some time within" are defined in the CRM as E61 Time Primitive. Instances of E61 Time Primitive are defined as closed, contiguous intervals on the natural time dimension in which we live. “Closed” means that the endpoints belong to the interval. “Contiguous” means that there are no gaps between the endpoints in the interval (which holds for “intervals” in general). The reason to describe time spans with inner and outer intervals is the existence of a very efficient algebra for calculating resulting areas of determinacy and indeterminacy (Cowley & Plexousakis 2000). Further, they are motivated by the British MIDAS Heritage standards [https://en.wikipedia.org/wiki/MIDAS_Heritage] and easy to define in Relational databases. Since the E61 Time Primitive of the CRM cannot be expressed in RDF directly, in the official RDF implementation of the CIDOC CRM, we define four properties replacing P81 and P82 adequately using xsd:dateTime.
The Russian labels are screwed, except for P81a. I reported that to the CRM SIG 5y ago.
You're welcome to provide a domain ontology adding these. :)
The RDFS 6.2.1 version of CIDOC CRM contains the properties P81a, P81b, P82a and P82b which allow to assign datetimes to the P81 and P82 properties.
They should be added to ECRM.
Here is a copy/paste definition of those properties:
Here is the corresponding file: http://www.cidoc-crm.org/sites/default/files/cidoc_crm_v6.2.1-2018April.rdfs