- From: Provenance Working Group Issue Tracker <sysbot+tracker@w3.org>
- Date: Thu, 09 Feb 2012 23:11:36 +0000
- To: public-prov-wg@w3.org
PROV-ISSUE-249 (two-derivations): Why do we have 3 derivations? [prov-dm] http://www.w3.org/2011/prov/track/issues/249 Raised by: Luc Moreau On product: prov-dm We currently have 3 derivations: A precise-1 derivation, written wasDerivedFrom(id, e2, e1, a, g2, u1, attrs) An imprecise-1 derivation, written wasDerivedFrom(id, e2,e1, t, attrs) An imprecise-n derivation, written wasDerivedFrom(id, e2, e1, t, attrs) Imprecise-1/imprecise-1 are distinguished with the attribute prov:steps. Why do we need 3 derivations? I believe that imprecise-n derivation is required for the 'scruffy provenance' use case. I believe that precise-1 derivation is required for the 'proper provenance' use case: in particular, it's a requirement for provenance based reproducibility. I don't understand why we have imprecise-1. Why can we just have imprecise-n and precise-1? PS. If we go with this proposal, then they could simply be called imprecise/precise, and we don't need the attribute steps. PS2. They would essentially be a unqualified and a qualified derivation (in prov-o terminology).
Received on Thursday, 9 February 2012 23:11:40 UTC