http://www.enakting.org/http://www.enakting.org/provenance/voidp/<br />Provenance Models for Linked Data    <br />        ...
Government Linked Data	<br />Explosion of Government Linked Data efforts and projects.<br />data.gov, data.gov.au, data.go...
Examples of Government Linked Data (csv)<br />
Examples of Government Linked Data (rdf)<br />
Provenance and Trust<br />Whom do you trust on the Web?<br />
Provenance and Trust<br />Mash-ups, aggregation, integration, data re-use.<br />How do you elicit Reliability and Accuracy...
Different kinds of Provenance<br />When was x derived (when-provenance).<br />How was x derived (how-provenance).<br />Wha...
Provenance Models for Linked Datasets<br />Provenance Vocabulary Ontology<br />
Provenance Models for Linked Datasets(contd)<br />Open Provenance Model<br />
Provenance Models for Linked Datasets(contd)<br />Provenance for Datasets (voidp)<br />http://www.enakting.org/provenance/...
voiD Provenance Extension voidp<br />Designed to be simple and lightweight.<br />Mainly for (RDF) data publishers.<br />Sh...
Voidp Classes and Predicates<br />voidp:ProvenanceEvent:items under provenance control.<br />voidp:actor: actor, person, g...
A Concrete Example<br />voidp:activity [<br />       			a voidp:Provenance;         			<br />voidp:item [<br />foaf:name  ...
Questions<br />http://www.enakting.org/<br />http://www.enakting.org/provenance/voidp/<br />
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Omitola w3 c_govtlinkeddata

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W3C Government Linked Data Working Group F2F1, 30 June 2011

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Omitola w3 c_govtlinkeddata

  1. 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. 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. 3.
  4. 4. Examples of Government Linked Data (csv)<br />
  5. 5. Examples of Government Linked Data (rdf)<br />
  6. 6. Provenance and Trust<br />Whom do you trust on the Web?<br />
  7. 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. 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. 9. Provenance Models for Linked Datasets<br />Provenance Vocabulary Ontology<br />
  10. 10. Provenance Models for Linked Datasets(contd)<br />Open Provenance Model<br />
  11. 11. Provenance Models for Linked Datasets(contd)<br />Provenance for Datasets (voidp)<br />http://www.enakting.org/provenance/voidp/<br />
  12. 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 -> Process -> Data -> Data’ .<br />@prefix voidp: <http://purl.org/void/provenance/ns> .<br />
  13. 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. 14. A Concrete Example<br />voidp:activity [<br /> a voidp:Provenance; <br />voidp:item [<br />foaf:name <http://crime.psi.enakting.org/stats/1898/2002/ds1>;<br />rdf:typescovo:Dataset;<br />rdfs:label "RECORDED CRIME STATISTICS 1898 - 2001/02"@en ;<br />prv:createdBy [<br />rdf:typeprv:Actor ;<br />prv:performedBy <http://tomitola> ;<br /> ];<br />voidp:originatingSource <http://rds.homeoffice.gov.uk/rds/pdfs07/recorded-crime-1898-2002.xls> ; <br />voidp:hashValue "12335353535"^^xsd:string ;<br />voidp:processType <http://void.rkbexplorer.com/id/dataset/123456789> ;<br />to:hasBeginning "2010-10-24T21:32:52"^^xsd:dateTime ;<br />to:hasEnd "2010-10-25T09:32:00"^^xsd:dateTime ;<br /> ]; <br />voidp:item [<br />foaf:name <http://crime.psi.enakting.org/stats/1898/2002/ds1_1>;<br />rdfs:label "Column for values of Homicide for 1898."@en;<br />prv:createdBy [<br />rdf:typeprv:Actor ;<br />prv:performedAt "2010-10-24T21:32:52"^^xsd:dateTime ;<br />prv:performedBy <http://tomitola> ;<br /> ];<br />voidp:originatingSource <http://crime.psi.enakting.org/stats/1898/2002/ds1> ;<br />voidp:processType <http://void.rkbexplorer.com/id/dataset/123456789> ;<br /> ]; <br />
  15. 15. Questions<br />http://www.enakting.org/<br />http://www.enakting.org/provenance/voidp/<br />

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