Morph-CSV is an open source tool for querying tabular data sources using SPARQL. It exploits the information from the query, RML+FnO mappings and CSVW metadata to enhance the performance and completness of traditional OBDA systems (SPARQL-to-SQL translators). At this moment can be embebed in the top of any R2RML-compliant system.

We provide two ways to run morph-csv: using the created docker image or directly run with Python3. First of all clone the repository:

git clone https://github.com/oeg-upm/morph-csv.git
cd morph-csv

Then choose one of the available options:

• Using docker and docker-compose*:

  docker-compose up -d
  docker exec -it morphcsv ./run-morph-csv.sh -c /configs/config-file.json -q /queries/query-file.rq

  *If you have any local resource you want to use copy it to the corresponding shared volume (folders: data, mappings, configs or queries)

• Using python3 (under a UNIX system):

  pip3 install -r requirements.txt
  python3 morphcsv.py -c path-to-config-file.json -q path-to-query-file.rq

The path of the data sources in CSVW and YARRRML anotations have to be the same.

{
  "csvw":"PATH OR URL to CSVW annotations",
  "yarrrml": "PATH OR URL TO YARRRML+FnO Mapping"
}

Morph-CSV has ben tested over three use cases: BSBM, Madrid-GTFS-Bench and Bio2RDF project. You can get the resources used and the results obtained in the branch evaluation (available soon)

• David Chaves-Fraga, Freddy Priyatna, Idafen Santana-Pérez and Oscar Corcho “Virtual Statistics Knowledge Graph Generation from CSV files”. In:Emerging Topics in Semantic Technologies: ISWC2018 Satellite Events. Vol. 36. Studies on the Semantic Web. IOS Press,2018, pp. 235–244 Online Version
• Oscar Corcho, Freddy Priyatna, David Chaves-Fraga: "Towards a New Generation of Ontology Based Data Access". In: Semantic Web Journal, 2019. Online version
• Ana Iglesias-Molina, David Chaves-Fraga, Freddy Priyatna, Oscar Corcho: "Enhancing the Maintainability of the Bio2RDF project Using Declarative Mappings". In: 12th International Semantic Web Applications and Tools for Health Care and Life Sciences Conference, 2019. Online version
• David Chaves-Fraga, Edna Ruckhaus, Freddy Priyatna, Maria-Esther Vidal, Oscar Corcho, (2020). Enhancing OBDA Query Translation over Tabular Data with Morph-CSV. arXiv preprint arXiv:2001.09052 Pre-print version

Ontology Engineering Group - Data Integration:

• David Chaves-Fraga ([email protected])
• Jhon Toledo ([email protected])
• Luis Pozo ([email protected])