Senior Associate Professor in Computer Science at Linköping University, Amazon Scholar, research on database topics related to Web data and graph data
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Linköpings universitet
- Linköping, Sweden
- http://olafhartig.de
- @olafhartig
Pinned Loading
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LiUSemWeb/HeFQUIN
LiUSemWeb/HeFQUIN PublicHeFQUIN is a query federation engine for heterogeneous federations of graph data sources, including federations of knowledge graphs.
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LiUGraphQL/woo.sh
LiUGraphQL/woo.sh PublicFramework for generating a GraphQL server backed by a database.
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RDF2XGMML
RDF2XGMML PublicForked from kierdwyn/RDF2XGMML
RDF2GML/RDF2XGMML. Convert RDF file to GML or XGMML file format. For the purpose of loading RDF networks into Cytoscape.
Java
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LiUGraphQL/graphql-result-size
LiUGraphQL/graphql-result-size PublicThis is a Node.js module that can be used to calculate the size of a GraphQL response object before producing the object.
JavaScript 17
759 contributions in the last year
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Contribution activity
April 2025
Created 10 commits in 2 repositories
Created a pull request in w3c/rdf-concepts that received 2 comments
Reviewed 4 pull requests in 3 repositories
LiUSemWeb/HeFQUIN
2 pull requests
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remove type-specific DataRetrievalResponse methods and handle UnsupportedOperationDueToRetrievalError
This contribution was made on Apr 7
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408 make dataretrievalresponse a generic with a type argument
This contribution was made on Apr 4
w3c/sparql-query
1 pull request
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Revise RDFterm-equal and function sameTerm. Rename RDFterm-equal to sameValue.
This contribution was made on Apr 3
w3c/rdf-concepts
1 pull request
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Declare advisement level keywords for non-normative content in Conformance
This contribution was made on Apr 2
Opened 2 issues in 1 repository
LiUSemWeb/HeFQUIN
2
open
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Create README.txt for release packages
This contribution was made on Apr 8
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Complete the documentation pages
This contribution was made on Apr 8
3
contributions
in private repositories
Apr 4