metadata.ttl

@prefix : <https://w3id.org/riverbench/temp#> .
@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix eurovoc: <http://eurovoc.europa.eu/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix rb: <https://w3id.org/riverbench/schema/metadata#> .
@prefix rbdoc: <https://w3id.org/riverbench/schema/documentation#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix spdx: <http://spdx.org/rdf/terms#> .
@prefix stax: <https://w3id.org/stax/ontology#> .
@prefix void: <http://rdfs.org/ns/void#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

# This file contains the manually written metadata for the dataset.
# The URI of the dataset here is temporary. Real URIs are assigned
# automatically in CI.

:dataset
    a rb:Dataset, dcat:Dataset ;
    dcterms:conformsTo <https://w3id.org/riverbench/schema/metadata> ;
    dcterms:identifier "openaire-lod" ;

    dcterms:title "OpenAIRE LOD graph"@en ;
    dcterms:description """[OpenAIRE LOD](https://web.archive.org/web/20201230151925/http://lod.openaire.eu/documentation) was a service that exported data from the OpenAIRE information space in RDF format, using Linked Open Data principles. The data was exported to Zenodo, with the [last dump dated at March 3, 2021](https://zenodo.org/records/4587369). This dataset consists of the "result" subset of the OpenAIRE LOD graph, including scientific results such as publications.

Only records that were valid RDF and had the "dateofcollection" property were included here. They were then sorted by the date of collection in ascending order. The first 2 (out of 28) million records that were obtained in this way are a part of this dataset.

See also [the project documentation](https://web.archive.org/web/20201230151925/http://lod.openaire.eu/documentation) and [the used ontology](https://web.archive.org/web/20201230151925/http://lod.openaire.eu/vocab).
"""@en ;
    dcterms:issued "2024-07-12"^^xsd:date ;
    dcterms:license <https://spdx.org/licenses/CC0-1.0> ;
    
    dcterms:creator [
        foaf:name "Giorgos Alexiou" ;
        foaf:homepage <https://orcid.org/0000-0003-2244-4916> ;
        rbdoc:hasDocWeight 1 ;
    ] , [
        foaf:name "George Papastefanatos" ;
        foaf:homepage <https://orcid.org/0000-0002-9273-9843> ;
        rbdoc:hasDocWeight 2 ;
    ] , [
        foaf:name "Sahar Vahdati" ;
        rbdoc:hasDocWeight 3 ;
    ] , [
        foaf:name "Christoph Lange" ;
        rbdoc:hasDocWeight 4 ;
    ] , [
        foaf:name "Piotr Sowiński" ;
        foaf:nick "Ostrzyciel" ;
        rdfs:comment "Processing the dataset for RiverBench" ;
        foaf:homepage <https://github.com/Ostrzyciel>, <https://orcid.org/0000-0002-2543-9461> ;
        rbdoc:hasDocWeight 5 ;
    ] ;
    dcterms:source 
        <https://doi.org/10.5281/zenodo.4587369> , 
        <https://web.archive.org/web/20201230151925/http://lod.openaire.eu/documentation> ;
    
    dcat:theme 
        eurovoc:c_99a79cea , # open science
        eurovoc:c_5ea6e5c4 , # open data
        eurovoc:6306 , # research results
        eurovoc:2924 , # scientific research
        eurovoc:2896 , # research report
        eurovoc:4864 # bibliography
    ;

    # Technical metadata
    void:vocabulary <http://lod.openaire.eu/vocab> ;
    rb:hasStreamElementCount 2000000 ;
    stax:hasStreamTypeUsage [
        a stax:RdfStreamTypeUsage ;
        rdfs:comment "The dataset can be viewed as a stream of graphs, with each graph corresponding to one scientific result from OpenAIRE. Each graph is uniquely identified by its subject IRI."@en ;
        stax:hasStreamType stax:subjectGraphStream ;
    ] , [
        a stax:RdfStreamTypeUsage ;
        rdfs:comment "The dataset can be viewed as a flattened stream of triples."@en ;
        stax:hasStreamType stax:flatTripleStream ;
    ] ;
    rb:hasStreamElementSplit [
        a rb:TimeStreamElementSplit, rb:TopicStreamElementSplit ;
        rb:hasTemporalProperty <http://lod.openaire.eu/vocab/dateofcollection> ;
        rdfs:comment "Each stream element corresponds to exactly one scientific result in OpenAIRE, each with an assigned timestamp (time of collection)."@en ;
        rb:hasSubjectShape [ 
            rdfs:comment "Target instances of class ResultEntity."@en ;
            sh:targetClass <http://lod.openaire.eu/vocab/ResultEntity> ;
        ] ;
    ] ;
    rb:conformsToRdf11 true ;
    rb:conformsToRdfStarDraft_20211217 true ;
    rb:usesGeneralizedRdfDatasets false ;
    rb:usesGeneralizedTriples false ;
    rb:usesRdfStar false ;
    
    # Other metadata
    dcterms:language "en" ;
.