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

[Johannes Schmidt]

Hi Lars,

thank you for your answer. This case seems to relate to one of the 
described design criteria in [1] Annex B:

"Proxies for identity related information should be kept apart from 
proxies carrying statement information about the subjects."

while <item-identifier, i> given in [1] Annex B.5 is a property within a 
proxy.

Best regards,
Johannes

[1] Topic Maps Reference Model, 13250-5: 
http://www.isotopicmaps.org/TMRM/TMRM-7.0/tmrm7.pdf
>
> * Johannes Schmidt
>>
>> 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.
>
> Yes.
>
>> 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)?
>
> This is not clear in the current draft. This problem was identified in 
> Leipzig, and a new draft should be ready before long where this is 
> resolved. (Basically, none of these topics will have item identifiers 
> in the new draft.)
>
>> In Annex B.5 a property <item-identifier, i> is declared explicitly...
>
> Yes. That's a different conversion process, though. It uses many of 
> these proxies, so it's not possible to use that process to convert the 
> bootstrap ontology. (At least not in the current draft.)
>
> --Lars M.
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