4 citations · 10 across the 7 of their papers we have counts for
7 papers
Transforming Shape Schemas with Composable Property-Graph Queries (Extended Version)
Philipp Seifer, Daniel Hernández, Ralf Lämmel +1
Property graphs may be constrained by schemas that inform both query engines and human users about the shape of valid data, enforcing a contract between data provider and consumer.…
eSPARQL: Representing and Reconciling Agnostic and Atheistic Beliefs in RDF-star Knowledge Graphs
Xinyi Pan, Daniel Hernández, Philipp Seifer +2
Over the past few years, we have seen the emergence of large knowledge graphs combining information from multiple sources. Sometimes, this information is provided in the form of as…
From Shapes to Shapes: Inferring SHACL Shapes for Results of SPARQL CONSTRUCT Queries (Extended Version)
Philipp Seifer, Daniel Hernández, Ralf Lämmel +1
SPARQL CONSTRUCT queries allow for the specification of data processing pipelines that transform given input graphs into new output graphs. It is now common to constrain graphs thr…
ProGS: Property Graph Shapes Language (Extended Version)
Philipp Seifer, Ralf Lämmel, Steffen Staab
Property graphs constitute data models for representing knowledge graphs. They allow for the convenient representation of facts, including facts about facts, represented by triples…
Deciding SHACL Shape Containment through Description Logics Reasoning (Extended Version)
Martin Leinberger, Philipp Seifer, Tjitze Rienstra +2
The Shapes Constraint Language (SHACL) allows for formalizing constraints over RDF data graphs. A shape groups a set of constraints that may be fulfilled by nodes in the RDF graph.…
Type Checking Program Code using SHACL (Extended Version)
Martin Leinberger, Philipp Seifer, Claudia Schon +2
It is a strength of graph-based data formats, like RDF, that they are very flexible with representing data. To avoid run-time errors, program code that processes highly-flexible da…
Semantic Query Integration With Reason
Philipp Seifer, Martin Leinberger, Ralf Lämmel +1
Graph-based data models allow for flexible data representation. In particular, semantic data based on RDF and OWL fuels use cases ranging from general knowledge graphs to domain sp…