This page describes the management (and issues around) of the prov namespace.
The namespace is:
- the namespace should dereference to appropriate serialization based on accept headers. Some examples
- In the html page returned, we should provide a glossary of terms with appropriate links to the various specifications.
- The html should be embedded with RDFa
Which owl should be returned when dereferencing
Solution 1: Merge all owl files into one namespace owl
Here the idea is that each note would maintain a separate owl file. For example sake let's use the following names:
- ProvenanceOntology.owl - the file containing owl definitions of terms in prov-o
- prov-aq.owl - the file containing owl definitions of terms in the paq
- prov-dict.owl - the file containing the owl definitions of terms in prov dictionaries
The proposal would be that this would be merged into a single file
The single file would contain concatenated sections delimitated by comments e.g.
# ... prov:Entity a owl:Class . # ... ##This section of the prov.owl contains terms from prov-aq prov:hasProvenanceService a owl:ObjectProperty . # ...
In addition we would add provenance information identifying where the information was retrieved from
<> prov:wasDerivedFrom <http://dvcs.w3.org/hg/prov/raw-file/42195124779a/ontology/ProvenanceOntology.owl> .
Stian: Should not the above go to the OWL file from the timestamped REC?
- Machine readable information for all terms in the namespace can be easily retrieved
- Creates a monolithic file
- Some provenance is lost
- Confusing to know what is part of recommendation or not
- Confusing which is the official recommendation, prov.owl or ProvenanceOntology.owl - gut instinct would be that the official is what you get from resolving namespace!
Solution 2: Use owl:import
Here we define a single owl file that imports the necessary information from all the separate owl files. Something like:
<> owl:imports <http://dvcs.w3.org/hg/prov/raw-file/42195124779a/ontology/ProvenanceOntology.owl> . <> owl:imports <http://dvcs.w3.org/hg/prov/raw-file/98870b4c796c/ontology/prov-dictionary.owl> .
Stian: Should not the above URLs point to the OWLs of the timestamped REC and Note's folders?
- Creates a simple file with clear distinction between which terms are defined by which notes
- No simple dereferencability
- Requires owl reasoning
Solution 2.1 Use owl:import, but merge PROV-O
This hybrid solution is a single OWL file with the content of ProvenanceOntology.owl (PROV-O) - but with the additional owl:imports for the modules. It will include provenance to the OWL of the official REC that it is derived from.
## Terms declared here are copied verbatim from the PROV-O recommendation <> prov:hadPrimarySource <http://www.w3.org/TR/2012/WD-prov-o-20120799/ProvenanceOntology.owl> . # ... prov:Entity a owl:Class . # ... ## This namespace also covers terms from notes which ## don't form part of the PROV-O recommendation. # <> owl:imports <http://www.w3.org/TR/prov-aq/prov-aq.owl>, <http://www.w3.org/TR/prov-collections/prov-collections.owl> .
- Distinguishes 'official' bit (PROV-O REC) from additional modules (notes)
- Does not require OWL reasoning for official terms
- Stronger metaprovenance
- Requires OWL reasoning for notes.