I blogged before on how to test SKOS integrity constraints, constraints which couldn't be expressed with OWL2 as defined by W3C.
I'm aware of two sol...
I'm having trouble to understand what the OWL API is doing with SKOS.
This is my case.
I start a new ontology and I import the SKOS Simple Knowledge ...
Much of the data that’s lying around is a mess. So we need badly tools that help us to clean up this mess.
Freebase Gridworks of Metaweb, recentl...
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Problem statement
We have been using in a project Sesame as rdf triple store and SPARQL endpoint.
The reasons we choose Sesame ...
As a follow up to the preceding entry on SKOS and OWL2 describing some difficulties in using the SKOS ontologies (DL and Full) in tools based on th...
What happened previously
In the SKOS spec you find a list of Class & Property Definitions and Integrity Conditions numbered from S1 to S62.
Mos...
Today's constraint is
S27 skos:related is disjoint with the property skos:broaderTransitive.
OWL2
While OWL 1 provided means to state t...
UPDATE: tested with the new Pellet 2.1.0 and Pellet ICV 0.4
We focus on the SKOS integrity constraint with number S13.
S13 skos:prefLabel, s...
UPDATED: due to the release of Pellet ICV 0.4
If you want to use SKOS, you need to be aware of some integrity constraints formulated in the spec.
...
UPDATE: Norm Walsh, the editor of the XProc spec and the developer of Calabash commented that PUT and DELETE are supported by XProc. See at the end o...
We consider following SKOS property definitions which were not expressible in OWL1:
S55: The property chain (skosxl:prefLabel, sk...
My slides used during the well attended seminar on XRX (45 attendees) for SAI.
[Download file "XRX.pdf"]
I have been testing Open Calais.
Open Calais is a Web Service for text mining that can extract entities (persons, companies, countries, ... ) in RDF/O...
Identifiers with qualifiers in round brackets
DBPedia is using in its identifiers qualifiers within round brackets to be able to distinguish bet...
The slides of my SW talk at the very successful seminar "Access to Enriched Cultural Heritage Information Using Semantic Web Technology
Leuven, Belgi...
W3C has published a set of URI-s to uniquely identify Semantic Web entailment regimes.
I added some links to the related specs on the web and ...
My article on the Semantic Web (in Dutch) that appeared in DB/M Database Magazine, Issue 8, December 2009 is
available online.
Note: the link is fin...
The slides used during my talk on Semantic Web Technologies for SAI in Brussels on November 24th 2009 are available here.
[Download file "SW.pdf"]
Issue
One of the major issues in RDF is how to associate metadata with a statement.
I can make a statement that "John - married_to - Joan...
Living in the XML and RDF world