Circular references in chameo imports/ update of imports

[SArndt-TIB]

Hi everyone,

we are running a terminology service where we would like to ingest the BattInfo ontology which is associated and using the different EMMO ontologies - CHAMEO being one of them.

We have trouble doing so with our OLS4-based system. The ingest of battinfo from https://raw.githubusercontent.com/BIG-MAP/BattINFO/master/battinfo.ttl is stopping because of the imports. As I was told from our devs, there is a loop. I tried to localize it and I hope I got it right.

BattInfo imports https://w3id.org/emmo/domain/battery/0.13.0-beta/battery which imports https://w3id.org/emmo/domain/electrochemistry/0.22.0-beta/electrochemistry (both latest releases/ tags) which imports https://w3id.org/emmo/domain/characterisation-methodology/chameo which resolves to https://raw.githubusercontent.com/emmo-repo/domain-characterisation-methodology/master/chameo.ttl.

And in there I find imports

• https://w3id.org/emmo/1.0.0-beta7/disciplines/computerscience resolving to https://raw.githubusercontent.com/emmo-repo/EMMO/1.0.0-beta7/disciplines/computerscience.ttl and
• https://w3id.org/emmo/1.0.0-beta7/disciplines/models resolving to https://raw.githubusercontent.com/emmo-repo/EMMO/1.0.0-beta7/disciplines/models.ttl

These two are both not the latest releases and also contain a circular reference, importing each other over and over again. In the latest releases this seems to be fixed: https://github.com/emmo-repo/EMMO/blob/v1.0.0-rc1/disciplines/computerscience.ttl is imported by https://github.com/emmo-repo/EMMO/blob/v1.0.0-rc1/disciplines/models.ttl but not vice versa.

My question to you would now be, whether it would be possible for you to update the references in your imports, so that we can test (upstream) whether this changes our problems with BattInfo?

I also saw that BattInfo is referring to your master branch, even though several beta branches are available (the latest of which seems to import even older versions of models.ttl and computerscience.ttl). In other EMMO-associated repos I saw that they are working with releases which is not the case here - have you thought about that? Or is it still too early? For an outsider, this really would improve the transparency - especially in a more complex ontology setup as I find here with 6 or more levels of direct and indirect imports.

Thanks for considering and all the best

Susanne