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Model Task Force First Provenance WG F2F

Model Task Force First Provenance WG F2F. Satya Sahoo, Paolo Missier , Khalid Belhajjame , Jun Zhao Boston, MA. Background. Objective: Define the provenance model to be used in PIL Tasks Identify and provide description of provenance concepts using Provenance XG final report

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Model Task Force First Provenance WG F2F

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  1. Model Task ForceFirst Provenance WG F2F Satya Sahoo, Paolo Missier, Khalid Belhajjame, Jun Zhao Boston, MA

  2. Background • Objective: Define the provenance model to be used in PIL • Tasks • Identify and provide description of provenance concepts using • Provenance XG final report • Journalism example scenario • Use Semantic Web technologies to define the provenance concepts • Provide formal semantics of the provenance model

  3. Agenda for first F2F • A set of prioritized provenance concepts identified (ref: journalism example) • Thing • Invariant View or Perspective on Thing • Process Execution • Derivation • Use • Generation • Agent • Temporal ordering • Reach agreement on the definitions of prioritized provenance concepts

  4. Agenda for first F2F • Work completed prior to first F2F • Review, curation, and consolidation of prioritized concept definitions • Enumerate outstanding issues related to prioritized concepts • Issues for discussion: • Finalize definitions of prioritized concepts (reconcile outstanding issues) • Evolve consolidated list of prioritized concepts towards a report/descriptive document • Review status of concepts not prioritized for F2F • Coordinate with provenance access and query task force

  5. Agreement on Provenance Concepts • Agreement reached during weekly meetings among WG members • The subject of provenance may be anything, whether physical, digital, conceptual or otherwise • To define provenance-related concepts independently of the web architecture in a first instance • Definition of thing and the invariant view or perspective of thing • Definition of process execution (differentiate between execution and specification, has duration, and start of execution is always in past) • Definition of derivation • PIL is an assertion language • Use constraints introduced in definitions of concepts as building blocks for understanding PIL

  6. Outstanding Issues • Resolve outstanding issues for concepts with agreement over their definitions • IVPT • Process execution • Derivation • Agree on definitions of following prioritized concepts • Agent • Use • Generation • Ordering of process execution • Time

  7. Next steps for the Model TF • Formalization of the prioritized provenance concepts • Describe the journalism example using the prioritized concepts • Represent the description using Semantic Web technologies (RDF) • Define semantics of the encoding • Rephrase provenance queries in journalism example using prioritized concepts • Primer on provenance model

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