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Re: [dxwg] Best practice for a loosely-structured catalog

From: Simon Cox via GitHub <sysbot+gh@w3.org>
Date: Sat, 07 Jul 2018 06:35:28 +0000
To: public-dxwg-wg@w3.org
Message-ID: <issue_comment.created-403193007-1530945327-sysbot+gh@w3.org>
Following up on [ACTION assigned in this week's DCAT meeting](https://www.w3.org/2018/07/05-dxwgdcat-minutes#x05) . 

Example 1 - undifferentiated set of files linked to the dcat:Dataset using dcterms:relation and blank nodes

```
dap:d33937
  rdf:type dcat:Dataset ;
  dcterms:description "A set of RDF graphs representing the International [Chrono]stratigraphic Chart, ..." ;
  dcterms:issued "2018-07-07"^^xsd:date ;
  dcterms:language [
      skos:notation "en" ;
    ] ;
  dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
  dcterms:relation <http://resource.geosciml.org/classifier/ics/ischart/> ;
  dcterms:relation <http://resource.geosciml.org/ontology/timescale/gts> ;
  dcterms:relation <http://stratigraphy.org/> ;
  dcterms:relation <https://vocabs.ands.org.au/viewById/194> ;
  dcterms:relation [      dcterms:identifier "ChronostratChart2017-02.pdf" ;    ] ;
  dcterms:relation [      dcterms:identifier "isc2017.jsonld" ;    ] ;
  dcterms:relation [      dcterms:identifier "isc2017.nt" ;    ] ;
  dcterms:relation [      dcterms:identifier "isc2017.rdf" ;    ] ;
  dcterms:relation [      dcterms:identifier "isc2017.ttl" ;    ] ;
  dcterms:relation [      dcterms:identifier "timescale.zip" ;    ] ;
  dcterms:title "RDF representation of 2017 edition of International Chronostratigraphic Chart (Geologic Timescale)" ;
  dcat:contactPoint <https://people.csiro.au/C/S/Simon-Cox> ;
  dcat:keyword "GeoSPARQL" , "OWL" , "OWL-Time" , "RDF" , "SOSA" , "SSN" , "geologic timescale" , "reference system" , "stratigraphy" , "vocabulary" ;
  dcat:landingPage <https://data.csiro.au/dap/landingpage?pid=csiro:33937> ;
  dcat:theme <http://registry.it.csiro.au/def/keyword/anzsrc/information-engineering-and-theory> ;
  dcat:theme <http://registry.it.csiro.au/def/keyword/anzsrc/interorganisational-information-systems-and-web-services> ;
  dcat:theme <http://registry.it.csiro.au/def/keyword/anzsrc/stratigraphy> ;
  dcat:theme <http://registry.it.csiro.au/def/keyword/anzsrc/web-technologies> ;
.
```
Example 2 - The same dataset with the 'files' linked using more precise semantics:  
```
dap:d33937
  rdf:type dcat:Dataset ;
  dcterms:description "A set of RDF graphs representing the International [Chrono]stratigraphic Chart, ..." ;
  dcterms:issued "2018-07-07"^^xsd:date ;
  dcterms:language [
      skos:notation "en" ;
    ] ;
  dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
  dcterms:relation <http://resource.geosciml.org/classifier/ics/ischart/> ;
  dcterms:relation <http://resource.geosciml.org/ontology/timescale/gts> ;
  dcterms:relation <http://stratigraphy.org/> ;
  dcterms:relation <https://vocabs.ands.org.au/viewById/194> ;
   dcterms:isFormatOf [
      dcterms:identifier "ChronostratChart2017-02.pdf" ;
      dcat:accessURL <https://data.csiro.au/dap/landingpage?pid=csiro:33937> ;
      dcat:byteSize "289kB" ;
    ] ;
  dcat:distribution [
      rdf:type dcat:Distribution ;
      dcterms:identifier "isc2017.jsonld" ;
      dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
      dcat:accessURL <https://data.csiro.au/dap/landingpage?pid=csiro:33937> ;
      dcat:byteSize "682kB" ;
    ] ;
  dcat:distribution [
      rdf:type dcat:Distribution ;
      dcterms:identifier "isc2017.nt" ;
      dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
      dcat:accessURL <https://data.csiro.au/dap/landingpage?pid=csiro:33937> ;
      dcat:byteSize "2000kB" ;
    ] ;
  dcat:distribution [
      rdf:type dcat:Distribution ;
      dcterms:identifier "isc2017.rdf" ;
      dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
      dcat:accessURL <https://data.csiro.au/dap/landingpage?pid=csiro:33937> ;
      dcat:byteSize "1564kB" ;
    ] ;
  dcat:distribution [
      rdf:type dcat:Distribution ;
      dcterms:identifier "isc2017.ttl" ;
      dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
      dcat:accessURL <https://data.csiro.au/dap/landingpage?pid=csiro:33937> ;
      dcat:byteSize "520kB" ;
    ] ;
  dcterms:references [
      dcterms:identifier "timescale.zip" ;
      dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
      dcat:accessURL <https://data.csiro.au/dap/landingpage?pid=csiro:33937> ;
      dcat:byteSize "102kB" ;
    ] ;
  dcterms:title "RDF representation of 2017 edition of International Chronostratigraphic Chart (Geologic Timescale)" ;
  dcat:contactPoint <https://people.csiro.au/C/S/Simon-Cox> ;
  dcat:keyword "GeoSPARQL" , "OWL" , "OWL-Time" , "RDF" , "SOSA" , "SSN" , "geologic timescale" , "reference system" , "stratigraphy" , "vocabulary" ;
  dcat:landingPage <https://data.csiro.au/dap/landingpage?pid=csiro:33937> ;
  dcat:theme <http://registry.it.csiro.au/def/keyword/anzsrc/information-engineering-and-theory> ;
  dcat:theme <http://registry.it.csiro.au/def/keyword/anzsrc/interorganisational-information-systems-and-web-services> ;
  dcat:theme <http://registry.it.csiro.au/def/keyword/anzsrc/stratigraphy> ;
  dcat:theme <http://registry.it.csiro.au/def/keyword/anzsrc/web-technologies> ;
.
```

-- 
GitHub Notification of comment by dr-shorthair
Please view or discuss this issue at https://github.com/w3c/dxwg/issues/253#issuecomment-403193007 using your GitHub account
Received on Saturday, 7 July 2018 06:35:35 UTC

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