# OCP2KG: Ontology Change Propagation to Knowledge Graphs
![GitHub](https://img.shields.io/github/license/oeg-dataintegration/ocp2kg?style=flat)

OCP2KG is a tool for propagating ontology changes to declarative mappings. The tool requires as input the updated 
version of the ontology in OWL, the outdated mappings in RML, and the change data, that has to be in 
RDF following the [OWL Change Ontology Extension](https://github.com/DiegoCondeHerreros/OWLChangeExtension) model.  

# How to run it?

```bash
python3 -m pip install -r requirements
python3 evol_kg.py -c path_to_change_kg.nt -m path_to_old_mapping.rml.ttl -o path_to_new_ontology.ttl -n path_output_mappings.rml.ttl
```

# Architecture
![OCP2KG Architecture](figures/arqui.jpg?raw=true "OCP2KG Architecture")

## Cite this work:
If you used OCP2KG in your work, please cite it as:

```bib
@inproceedings{herreros2024propagating,
    title={{Propagating Ontology Changes to Declarative Mappings in Construction of Knowledge Graphs}},
    author={Diego Conde Herreros and Lise Stork and Romana Pernisch and Mar{\'\i}a Poveda-Villal{\'o}n and Oscar Corcho and David Chaves-Fraga},
    booktitle={Submitted to Fifth International Workshop on Knowledge Graph Construction\@ESWC2024},
    year={2024},
    url={https://openreview.net/forum?id=ONL4LGlHNu},
    note={Under Review}
}
```

# Authors
- Diego Conde Herreros (OEG-UPM) - main contact  diego.conde.herreros at upm.es
- David Chaves-Fraga (CiTIUS-USC)