This repository contains a simple PHP script, which transforms an exported CSV file with building information to an enriched version. It contains further information and normalized strings. Information are about buildings located in Leipzig and their degree of accessibility. The source data is being provided by the Behindertenverband Leipzig e.V.

The following areas are covered currently:

• Education: https://stadtfuehrer.behindertenverband-leipzig.de/bildung.htm
• Services: https://stadtfuehrer.behindertenverband-leipzig.de/dienst.htm
• Restaurants: https://stadtfuehrer.behindertenverband-leipzig.de/gast.htm
• Health: https://stadtfuehrer.behindertenverband-leipzig.de/gesund.htm
• Law: https://stadtfuehrer.behindertenverband-leipzig.de/recht.htm
• Organizations: https://stadtfuehrer.behindertenverband-leipzig.de/verband.htm
• Traffic: https://stadtfuehrer.behindertenverband-leipzig.de/verkehr.htm

The R2RML-mapping (file) allows the transformation of the CSV file to RDF using R2RML tools like sparqlmap. Its purpose is to lower the barrier to convert original data, modeled as a table, in further formats.

Our R2RML mapping is based on a couple of controlled vocabularies, such as Dublin Core and The vocabulary for (L)OD description of wheelchair accessibility as well as two vocabularies, inspired by and based on the data model of the building database, developed by ourselves.

• The place ontology contains properties and classes about buildings in general.
• The place accessibility ontology contains properties to model accessibility information of a building.

The file places.n3 was generated using sparqlmap with our R2RML-mapping.

If you want to transform the CSV file a RDF file yourself, you can use this docker-container.

We also developed, based on the building accessibility ontology, an extended set of SHACL rules. SHACL can be used to formulate rules about RDF graphs. Using a SHACL processor helps evaluating, if a given dataset is valid or not.

You can found the SHACL rules here: https://github.com/AKSW/shacl-shapes/tree/master/shape-groups/accessible-place

We used the closed building database maintained by the BVL to generate the CSV files. Without it, you can't use these scripts. In case you have it (table.csv) run the script enrich-table-csv.php. Furthermore, you need to run composer update to setup required vendors.

CSV and RDF (n3) files are licensed under the terms of Data licence Germany – attribution – version 2.0. Please use the following text as attribution: Behindertenverband Leipzig e.V., www.le-online.de.

Software source code is licensed under the terms of GPL 3.0.

The rest of the repository is licensed under the terms of the CC-BY 4.0.