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Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
Omitola w3 c_govtlinkeddata
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Omitola w3 c_govtlinkeddata

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W3C Government Linked Data Working Group F2F1, 30 June 2011

W3C Government Linked Data Working Group F2F1, 30 June 2011

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  • 1. http://www.enakting.org/http://www.enakting.org/provenance/voidp/<br />Provenance Models for Linked Data    <br /> Tope Omitola<br /> W3C GLD WG F2F1, 30 June 2011<br />1<br />
  • 2. Government Linked Data <br />Explosion of Government Linked Data efforts and projects.<br />data.gov, data.gov.au, data.gov.au<br />Examples<br />
  • 3.
  • 4. Examples of Government Linked Data (csv)<br />
  • 5. Examples of Government Linked Data (rdf)<br />
  • 6. Provenance and Trust<br />Whom do you trust on the Web?<br />
  • 7. Provenance and Trust<br />Mash-ups, aggregation, integration, data re-use.<br />How do you elicit Reliability and Accuracy?<br />Generate trust by revealing as much information of you as possible.<br />Enables consumers to decide the quality and trustworthiness of your data.<br />Useful for Data Discovery/Mining + Query Planning.<br />
  • 8. Different kinds of Provenance<br />When was x derived (when-provenance).<br />How was x derived (how-provenance).<br />What data was used to derive x (what-provenance).<br />Who carried out the transformation(s) from whence x came (who-provenance).<br />
  • 9. Provenance Models for Linked Datasets<br />Provenance Vocabulary Ontology<br />
  • 10. Provenance Models for Linked Datasets(contd)<br />Open Provenance Model<br />
  • 11. Provenance Models for Linked Datasets(contd)<br />Provenance for Datasets (voidp)<br />http://www.enakting.org/provenance/voidp/<br />
  • 12. voiD Provenance Extension voidp<br />Designed to be simple and lightweight.<br />Mainly for (RDF) data publishers.<br />Should include necessary information of the process, its inputs, and outputs.<br />Basis is simple: An agent runs a process on a data (or dataset) to get another data (or dataset).<br />Agent -&gt; Process -&gt; Data -&gt; Data’ .<br />@prefix voidp: &lt;http://purl.org/void/provenance/ns&gt; .<br />
  • 13. Voidp Classes and Predicates<br />voidp:ProvenanceEvent:items under provenance control.<br />voidp:actor: actor, person, group, software or physical artifact, involved in this provenance event.<br />voidp:certification:used to contain dataset’ signature elements<br />voidp:contact: contact details of whom to contact should people have queries about this dataset.<br />voidp:item:the provenance characteristics of a data item under provenance control.<br />voidp:processType: the type of transformation or conversion procedure carried out on the item’s source<br />voidp:resultingDataset: dataset that is the result of this provenance event.<br />voidp:sourceDataset: source dataset for the data item under provenance control.<br />
  • 14. A Concrete Example<br />voidp:activity [<br /> a voidp:Provenance; <br />voidp:item [<br />foaf:name &lt;http://crime.psi.enakting.org/stats/1898/2002/ds1&gt;;<br />rdf:typescovo:Dataset;<br />rdfs:label &quot;RECORDED CRIME STATISTICS 1898 - 2001/02&quot;@en ;<br />prv:createdBy [<br />rdf:typeprv:Actor ;<br />prv:performedBy &lt;http://tomitola&gt; ;<br /> ];<br />voidp:originatingSource &lt;http://rds.homeoffice.gov.uk/rds/pdfs07/recorded-crime-1898-2002.xls&gt; ; <br />voidp:hashValue &quot;12335353535&quot;^^xsd:string ;<br />voidp:processType &lt;http://void.rkbexplorer.com/id/dataset/123456789&gt; ;<br />to:hasBeginning &quot;2010-10-24T21:32:52&quot;^^xsd:dateTime ;<br />to:hasEnd &quot;2010-10-25T09:32:00&quot;^^xsd:dateTime ;<br /> ]; <br />voidp:item [<br />foaf:name &lt;http://crime.psi.enakting.org/stats/1898/2002/ds1_1&gt;;<br />rdfs:label &quot;Column for values of Homicide for 1898.&quot;@en;<br />prv:createdBy [<br />rdf:typeprv:Actor ;<br />prv:performedAt &quot;2010-10-24T21:32:52&quot;^^xsd:dateTime ;<br />prv:performedBy &lt;http://tomitola&gt; ;<br /> ];<br />voidp:originatingSource &lt;http://crime.psi.enakting.org/stats/1898/2002/ds1&gt; ;<br />voidp:processType &lt;http://void.rkbexplorer.com/id/dataset/123456789&gt; ;<br /> ]; <br />
  • 15. Questions<br />http://www.enakting.org/<br />http://www.enakting.org/provenance/voidp/<br />

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