[topicmapmail] TMRM/TMDM Mapping: bootstrap proxy "subject-identifier"

[Johannes Schmidt]

Hi all,

today I had a look at the TMRM/TMDM Mapping in the latest version of the 
Topic Maps Reference Model (which makes the understanding of TMRM easier 
imo/for me). I have a question concerning the "bootstrap TMDM Ontology" 
in Annex B.3.

The CTM-line
subject tm:subject

implies a (local) item identifier and a subject identifier resolved to 
http://psi.topicmaps.org/iso13250/model.2#subject.

For the conversion process
1) a (recursive) proxy subject-identifier = {< subject-identifier, 
subject-identifier >} is used.
2) "For every topic item the item identifier id is used as label for a 
proxy with the provided
subject identifier IRI: id = { subject-identifier, IRI }, ." [1]

My question is how to derive/construct the (mandatory) item identifier 
for "subject" from 1) and 2)?

In Annex B.5 a property <item-identifier, i> is declared explicitly...

Best Regards,
Johannes

http://phptmapi.sourceforge.net/
http://quaaxtm.sourceforge.net/


[1] Topic Maps Reference Model, 13250-5: 
http://www.isotopicmaps.org/TMRM/TMRM-7.0/tmrm7.pdf