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https://github.com/feup-infolab/ontologies-database
A simple ontology database in-memory object. Can refresh itself from a list in ontologies_list.txt
https://github.com/feup-infolab/ontologies-database
loading lov ontologies virtuoso
Last synced: about 1 month ago
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A simple ontology database in-memory object. Can refresh itself from a list in ontologies_list.txt
- Host: GitHub
- URL: https://github.com/feup-infolab/ontologies-database
- Owner: feup-infolab
- License: bsd-3-clause
- Created: 2017-11-13T19:27:53.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2017-11-16T15:26:49.000Z (about 7 years ago)
- Last Synced: 2024-11-18T06:59:21.048Z (about 2 months ago)
- Topics: loading, lov, ontologies, virtuoso
- Language: JavaScript
- Homepage:
- Size: 9.04 MB
- Stars: 4
- Watchers: 4
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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# An ontology repository for your OpenLink Virtuoso Instances
We all know how hard it is to find ontologies on the web to load into our triple store as separate graphs.
The [Linked Open Vocabularies](http://lov.okfn.org/dataset/lov/) website helps a lot, but their dumps are in `.nq` format (n-Quads) and you will struggle quite a lot to try to translate them into `.n3` or any other format that Virtuoso accepts.
`ontologies-database` is intended as
* A repository of ontologies on GitHub, in `.rdf` or `.owl` for easy loading into Virtuoso
* A download script that, given a list of ontology URIs in a `.txt` file, will attempt to downlod all those ontologies
* A script to load those ontologies into separate graphs in a Virtuoso Instance running on `localhost`, via Virtuoso's `isql` utility.
## Quickstart guide
This script is intended as a way to automatically fetch ontologies and load them into an OpenLink Virtuoso instance.
First, clone the repo:
````bash
git clone https://github.com/feup-infolab/ontologies-database.git
cd ontologies-database
````
Then, run the loading script:
````bash
chmod +x ./load_ontologies_into_virtuoso.sh
./load_ontologies_into_virtuoso.sh ontologies_list.txt
````
Your Virtuoso instance will then be loaded with all the ontologies in the `downloaded/` folder, each in its own graph.
## Reloading the database
Ontologies can evolve, so we will periodically run the script and update this repository. If you want to refresh the ontologies in the `downloaded/` folder by yourself:
- Place the updated list of ontologies in the `ontologies_list.txt` file
- Install nvm
````bash
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.6/install.sh | bash
````
- Install NodeJS 8.9.0
````bash
nvm install 8.9.0
````
- Activate NodeJS 8.9.0
````bash
nvm use 8.9.0
````
- Run the updating script. This will attempt to re-download all ontologies in the list, if they are in `.owl` or `.rdf` format.
````bash
npm run
````
## How we built the ontologies_map.txt file
The list of ontology URIs in `ontologies_list.txt` was produced by:
1. Downloading the LOV dump (in `.n3`) from [here](http://lov.okfn.org/dataset/lov/sparql).
2. Loading the file into Virtuoso via the Quad Store upload function (ironic name, as it support uploading nQuads, only triples... Just call it Triple Store upload, no? But I digress...)
3. Running the following query in the Conductor:
````sparql
WITH
SELECT ?s
WHERE
{
?s rdf:type
}
````