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International-Data-Spaces-Association / InformationModel

The Information Model of the International Data Spaces implements the IDS reference architecture as an extensible, machine readable and technology independent data model.
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Extending ids:Frequency vocab #489

Closed tomkxy closed 2 years ago

tomkxy commented 2 years ago

Unfortunately, within the MDP project additional codes for the frequency vocab are required (apart from the ones requested in an earlier issue).

Thus, in order to re-use the IDS Frequency class and the associated codes, if the following codes would be added to frequency.ttl,. The following is just an abridged representation (only ID and comment):

idsc:ONCE a ids:Frequency; rdfs:label "Only once"@en ;

idsc:UNKNOWN a ids:Frequency; rdfs:label "Unknown"@en ;

HaydarAk commented 2 years ago

Hi!

thanks for the contribution. It makes sense to add the idsc:ONCE. But I do not like the unknown to be honest. The term is not a frequency, if viewed from a semantics perspective.

What is the difference between idsc:UNKNOWN and leaving the property empty / not using it ? I'd say there is no difference. Sure, from a developers perspective it is more pleasant to have a fixed value which states "unknown / none / ...".

The properties which use ids:Frequency are not enforced via a min count. Therefore if there is no ids:temporalResolution or ids:accrualPeriodicity property listed for a ids:Resource this means the frequency is unknown :)

tomkxy commented 2 years ago

Makes sense what you are saying

JohannesLipp commented 2 years ago

@HaydarAk could you please add this property? Thank you in advance! This would solve this issue.

@tomkxy Instead of "Unknown" you could use the existing idsc:IRREGULAR?

tomkxy commented 2 years ago

As I said, I am fine with not having Unknown and just not filling that property. Your line of argument makes sense to me.