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The practical application of an ontology significantly influences the decisions made during its development. Reasoning and inference are powerful capabilities that require adherence to specific design…
gkoum updated
3 months ago
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1) Overleaf Link:
https://www.overleaf.com/15900939fdgdqtwgvbyp
2) extend OPQL to more like SQL-style language
SELECT FROM WHERE.
3) prove that our translation from OPQL to Pig Latin is semant…
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I have the following query, used to harvest DCAT-AP metadata from local data catalogs implemented as SPARQL endpoints, often powered by Virtuoso Open-Source.
For some reason, it behaves very strangel…
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### Description
I have set up a conversion from CSV files to RDF, using the latest available versions of DuckDB and its JDBC driver. Using the the ontop CLI, it does not materialize but stalls with…
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Dear virtuoso team,
I am testing virtuoso-opensource v7.2.1 and I observe non-reproductible results for the following sparql query:
PREFIX up:http://purl.uniprot.org/core/ PREFIX rdfs:http://www.w3.…
tlomb updated
8 years ago
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Hi.
I am using the latest commit c010a6312643a084ac28488dba04b5c33fbc245f and just trying to test the GeoSPARQL functionality. I imported an N-Triple file which contains among other triples the follo…
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Dear all,
I have a problem with a SPARQL query I generate through an application and I send over a remote client to the public SPARQL endpoint of DBpedia.
I am actually using the SPARQL client libra…
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## Why?
Formal provers are used to verify the correctness of programs and mathematical proofs.
## Previous work
* [Cosette: An Automated Prover for SQL](http://cidrdb.org/cidr2017/papers/…
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I am trying to prune out duplicate literals which are identical save for a language tag. This is the result:
```
Virtuoso RDFXX Error Unknown language in DB.DBA.RDF_LANGUAGE_OF_OBJ, bad string "Commu…
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Virtuoso SPARQL allows access to Virtuoso's SQL transitivity extension.
```
option (transitive transitivity_option[,...])
transitivity_option ::= t_in ()
| t_out ()
| t_distinct
| t_s…