How to use the ontologies stored in this repository?

[andremdemori]

Hello, I am doing some research and I am interested in the ontologies stored in this repository. More specifically, the .ttl files.

However, all the files seem to have undergone a transformation. All the files that I open in Protegé have the same structure as shown in the image below.

All the .ttl files seem to have the same header:

@prefix : <http://purl.org/ontouml-models/dataset/demori2023miscon/>.
@prefix ontouml: <https://purl.org/ontouml-models/vocabulary/>.
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix owl: <http://www.w3.org/2002/07/owl#>.
@prefix xsd: <http://www.w3.org/2001/XMLSchema#>.

Can you tell me how I can use the ttl files in their original versions?

Thank you.

[pedropaulofb]

Hi @andremdemori ,

The .ttl files are generated after converting the .json files exported from the Visual Paradigm files (.vpp) using the ontouml-vp-plugin. Except for the : prefix, which is specific to each model, all .ttl files share the same header. This is expected behavior, as they utilize the same vocabularies.

By the way, if you want to transform the json files to ttl files yourself, you can use the ontouml2json Python library. To manipulate the catalog concepts, you can use the ontouml-models-lib (still in beta version). And to manipulate the concepts in graph version you can use the ontouml_vocabulary_lib library.