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Uploading large files to GraphDB cluster
I just installed the enterprise GraphDB version on a Kubernetes cluster, using the official Helm Chart (https://github.com/Ontotext-AD/graphdb-helm/tree/main), setting replicas to 5. Therefore, I now ...
Best practices
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Proper Memory Configuration for GraphDB Preload and Runtime with 1TB RDF Datasets
I’m fairly new to GraphDB and large-scale RDF systems, and I would really appreciate some expert advice to understand whether I have configured things correctly or if I’m missing something.
My goal is ...
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Cannot infer from property chain axiom in GraphDB
I have a simple example ontology (see below) that I made in Protege. In Protege using HermiT, I can see the inferred predicates based on property chain axioms.
When I import the same ontology to ...
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How to select Analyzer for GraphDB Lucene Connector
In GraphDB 10.6 I need to search across English and French words ignoring accents. I am looking for ASCII folding.
I have tried this SPARQL to generate the Lucene connector, but I get 500: Error - ...
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79
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How to ensure SHACL sh:minCount is obeyed [closed]
Situation
The issue below is solved, my resulting understanding for my actual issue around shacl validation is stated at the bottom.
The code in the upper part is unchanged and includes a syntax error,...
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GraphDB 11.1 Talk to your graph (TTYG) external integration
In version 11.1 the external integration has changed in such a manner that the https://github.com/Ontotext-AD/ttyg-client is not working any more. How is the new TTYG setup intended to be used by ...
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72
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GraphDB search uri takes forever in Firefox
Whenever I search and click on a result URI in the GraphDB workbench the search bar of the browser starts to spiral and it takes about a minute to load the triples. I am using version 10.8.4, but I ...
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139
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How does OWL2-RL handle date comparisons?
Is it possible to do "greater than date" that gets inferred by OWL2-RL in GraphDB? For ex: "Alice on date after 2024年02月10日".
So for example:
:AliceTravelAfterToday a rdfs:Class ;
...
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Graphdb owl:equivalentClass showing in results
I am working on a project where we use java to load rdf files to graphdb. We are working on moving to the cloud and I am noticing that the data in graphdb from the original environment vs the cloud/...
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Order of bind/optional
Using GraphDB, I see the following behavior in an OWL2-RL optimized repo.
Probably I’m doing something wrong... but I fail to see what.
Probably not specific to GraphDB, but generic SPARQL question.
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2
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96
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Is there any support for importing prefix/namespaces
In graphdb workbench, the setup section for a repository has an option called "namespaces",
which includes a list of prefixes and IRIs, eg.
rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns#...
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Metaphacts:GraphDB connection - Bad Request. Validation of repository config failed: could not read protocol version from server:
I am trying to connect graphDB repository from Metaphacts Docker version.
While trying to update default configurations, I am getting the error - "Bad Request. Validation of repository config ...
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1
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115
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vector embedding on ontotext similarity plugin
Am new to Ontotext. I understand similarity index of ontotext. It creates vectors of the index data and we can do search upon it. Is there a way to create vectors by other embedding models? Please ...
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How is the authentication header in GraphDB constructed?
Can anyone tell me how I should programmatically construct an authentication request in GraphDB? In other systems I have made a basic authentication request by appending a base64-encoded username and ...
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2
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107
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GraphDB API: question about import method
I am using GraphDB 10.8 (Free), and want to use the GraphDB API to import an RDF file into the default graph. I have been reading and trying out the API documentation, but I'm failing to run the ...