Knowledge Graphs (KGs) are widely used to represent heterogeneous domain knowledge
on the Web and within organizations. Various methods exist to manage KGs and ensure the …

Knowledge graphs (KGs) represent facts in the form of nodes and relationships and are
widely used to represent and share knowledge in many different domains. However, their …

Internet-of-Things (IoT) has attained a major share in embedded software development. The
new era of specialized intelligent systems requires adaptation of customized software …

In constraint languages for RDF graphs, such as ShEx and SHACL, constraints on nodes
and their properties are known as “shapes”. Using SHACL, we propose in this paper the …

Due to their expressive power, Knowledge Graphs (KGs) have received increasing interest
not only as means to structure and integrate heterogeneous information but also as a native …

When querying knowledge over the Web we typically consider the Web of Data to be a static
point of reference that is always available and that never changes. However, when actually …

Abstract While the Web of Data in principle offers access to a wide range of interlinked data,
the architecture of the Semantic Web today relies mostly on the data providers to maintain …

While the Web of Data in principle offers access to a wide range of interlinked data, the
architecture of the Semantic Web today relies mostly on the data providers to maintain …

Constraints on graph data expressed in the Shapes Constraint Language (SHACL) can be
quite complex. This brings the challenge of efficient validation of complex SHACL …

The importance of knowledge graphs is increasing. Due to their application in more and
more real-world use-cases the data quality issue has to be addressed. The Shapes …