Thorsten Liebig

The schema export (via `/rdf//onto`) seems to lack any DatatypeProperty declarations which are required esp. for reasoning because without any declaration they are assumed to be AnnotationProperties. As an example...

The schema serialization (via `/rdf//onto`) is generating un-intended domain/range statements that lead to wrong inferences according to the RDFS semantics. Consider the following Neo4j graph: ``` CREATE (n:Male {name: 'Jens'});...

Visual Analysis and Querying of Large Knowledge Graphs

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## Talk Title Visual Analysis and Querying of Large Knowledge Graphs ## Session Overview Grasping and querying large Knowledge Graphs (KGs) is challenging. I will demonstrate tooling for RDF as...

Validating all nodes of type with --node-type fails

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I could not successfully use this option to validate all nodes of type school:Student with: ```shex/bin/validate -x enrollee.shex -d alice-bob.ttl -t http://school.example/#Student -s http://school.example/#Enrollee``` This ends up in an error:...

Building the docker file on my environment (OSX 14.4, Docker version 26.0.0) leads to the following error: ```error: *** A compiler with support for C++11 language features is required.``` Complete...

The query parser seems to not support` COUNT(*)`. Is there a timetable for resolving this problem? PS: I also vote for adding `FILTER NOT EXISTS` to clever.