- From: Provenance Working Group Issue Tracker <sysbot+tracker@w3.org>
- Date: Tue, 13 Mar 2012 11:05:36 +0000
- To: public-prov-wg@w3.org
PROV-ISSUE-311 (clarify-optionals): Clarify optional arguments in DM [prov-dm] http://www.w3.org/2011/prov/track/issues/311 Raised by: Stian Soiland-Reyes On product: prov-dm There seems to be some confusion over any of the 'optional' arguments in PROV-DM/PROV-N. It is unclear if this means that the argument is *implied* (ie. existential quantification/bnodes in OWL/RDF) or not applicable/not present (NIL). It might be good to go through all of the optionals in PROV-DM and make sure they make that clear. For instance: > Generation, written wasGeneratedBy(id,e,a,t,attrs) in PROV-N, has the following components: > id: an optional identifier for a generation; > entity: an identifier for a created entity; > activity: an optional identifier for the activity that creates the entity; > time: an optional "generation time", the time at which the entity was completely created; > attributes: an optional set of attribute-value pairs that describes the modalities of generation of this entity by this activity. Change to: > Generation, written wasGeneratedBy(id,e,a,t,attrs) in PROV-N, has the following components: > id: an optional identifier for a generation, if unspecified the identifier is not known; > entity: an identifier for a created entity; > activity: an optional identifier for the activity that creates the entity, if unspecified activity is still implied, but unknown; > time: an optional "generation time", the time at which the entity was completely created, if unspecified the time is unknown or not applicable; > attributes: an optional set of attribute-value pairs that describes the modalities of generation of this entity by this activity, if unspecified an empty set is implied.
Received on Tuesday, 13 March 2012 11:05:46 UTC