https://github.com/aksw/void.ontowiki

A small extension which is able to (1) create VoID statements automatically where possible, and (2) suggest additional statements based on a VoiD suggestion-list
https://github.com/aksw/void.ontowiki

Last synced: 2 days ago
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A small extension which is able to (1) create VoID statements automatically where possible, and (2) suggest additional statements based on a VoiD suggestion-list

• Host: GitHub
• URL: https://github.com/aksw/void.ontowiki
• Owner: AKSW
• Created: 2011-09-13T07:30:07.000Z (over 14 years ago)
• Default Branch: master
• Last Pushed: 2011-09-16T20:12:13.000Z (over 14 years ago)
• Last Synced: 2025-09-09T02:26:25.827Z (9 months ago)
• Language: PHP
• Homepage: http://code.google.com/p/ontowiki/issues/detail?id=1002
• Size: 113 KB
• Stars: 4
• Watchers: 14
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# VoiD creation / suggestion extension for OntoWiki [edit this file](https://github.com/AKSW/void.ontowiki/edit/master/README.md)

> VoID is an RDF Schema vocabulary for expressing metadata about RDF

> datasets. It is intended as a bridge between the publishers and

> users of RDF data, with applications ranging from data discovery to

> cataloging and archiving of datasets.

Presentation slides: http://bit.ly/void-ontowiki

This extension should be able:

  * to generate VoID statements automatically where possible, and

  * to suggest additional content based on a suggestion-list

  

The following prefixes are used in this document:

    @cc:       

    @dc:       

    @dcterms:  

    @foaf:     

    @rdfs:     

    @void:     

    @wv:       

## Generated Content

### Statistics

#### void:classes

SPARQL query:

    SELECT (COUNT(DISTINCT ?o) AS ?no) WHERE {

      ?s a ?o .

    }

#### void:distinctObjects

SPARQL query:

    SELECT (COUNT(DISTINCT ?o) AS ?no) WHERE {

      ?s ?p ?o .

    }

    

#### void:distinctSubjects

SPARQL query:

    SELECT (COUNT(DISTINCT ?s) AS ?no) WHERE {

      ?s ?p ?o .

    }

    

#### void:entities

SPARQL query:

    SELECT (COUNT(DISTINCT ?s) AS ?no) WHERE {

      ?s a [] .

    }

    

#### void:properties

SPARQL query:

    SELECT (COUNT(DISTINCT ?p) AS ?no) WHERE {

      ?s ?p ?o .

    }

    

#### void:triples

SPARQL query:

    SELECT (COUNT(*) AS ?no) {

      ?s ?p ?o .

    }

    

#### void:vocabulary

To be retrieved via OntoWiki.

    

### Hosting / Feature description

#### void:dataDump

To be retrieved via OntoWiki.

#### void:feature

List of available RDF searializations to be retrived via OntoWiki.

#### void:openSearchDescription

To be retrieved via OntoWiki.

#### void:sparqlEndpoint

To be retrieved via OntoWiki.

#### void:subset

List all named graphs in a given OntoWiki dataset.

#### void:uriLookupEndpoint

To be retrieved via OntoWiki.

#### void:uriSpace

To be retrieved via OntoWiki.

### Linksets

## Suggested Content

The suggested content is based on the recommendation from the [VoID specification](http://www.w3.org/TR/void/#dublin-core) for dataset metadata. For each item there are listed synonym sets (synset) of RDF properties, in which one property is designed as the *preferred* property and the rest are the *alternatives*. The extension checks if one of the properties in a set has a value for a particular dataset. If no value is found, the extension suggests to add it for the preferred property from a set.

### Example representing the dataset

*  __Preferred property:__ `void:exampleResource`

### Licence

* __Preferred property:__ `cc:license`

* __Alternative properties:__

    * `dc:rights`

    * `wv:norms`

    * `wv:waiver`

SPARQL query:

    PREFIX cc: 

    PREFIX dc: 

    

    ASK {

      { ?s cc:license ?licence }

      UNION

      { ?s dc:rights ?licence }

    }

### Creator

* __Preferred property:__ `dcterms:creator`

* __Alternative properties:__

    * `dc:creator`

    * `dcterms:contributor`

SPARQL query:

    PREFIX dc: 

    PREFIX dcterms: 

    PREFIX void: 

    ASK {

     ?s a void:Dataset .

     { ?s dc:creator ?creator }

     UNION

     { ?s dcterms:creator ?creator }

     UNION

     { ?s dcterms:contributor ?creator }

    }

### Description

*  __Preferred property:__ `dcterms:description`

*  __Alternative properties:__

   *  `rdfs:comment`

### Publisher

*  __Preferred property:__ `dcterms:publisher`

### Source of the dataset

*  __Preferred property:__ `dcterms:source`

### Date

*  __Preferred property:__ `dcterms:date`

### Date of issue

*  __Preferred property:__ `dcterms:issued`

### Date of modification

*  __Preferred property:__ `dcterms:modified`

### Highly suggested

#### Title

*  __Preferred property:__ `dcterms:title`

*  __Alternative properties:__

    *  `dc:title`

    *  `rdfs:label`

SPARQL query:

    PREFIX dc: 

    PREFIX dcterms: 

    PREFIX void: 

    

    ASK {

      ?s a void:Dataset .

      { ?s dcterms:title ?title }

      UNION

      { ?s dc:title ?title }

    }

#### Date created

*  __Preferred property:__  `dcterms:created`

### Nice To Have

#### Homepage of the publisher

*  __Preferred property:__ `foaf:homepage`

#### Root resource

*  __Preferred property:__ `void:rootResource`

#### Subject described by the dataset

*  __Preferred property:__ `dcterms:subject`

*  __Alternative properties:__

    *  `dc:subject`

    *  `foaf:primaryTopic`

    

#### URI pattern of the dataset

*  __Preferred property:__ `void:uriRegexPattern`