More and more data in various formats are integrated into knowledge graphs. However,
there is no overview of existing approaches for generating knowledge graphs from …

Abstract The Relational to RDF Map** Language (R2RML) became a W3C
Recommendation a decade ago. Despite its wide adoption, its potential applicability beyond …

Abstract Knowledge graphs are often constructed from heterogeneous data sources, using
declarative rules that map them to a target ontology and materializing them into RDF. When …

A large number of datasets are being made available on the Web using a variety of formats
and according to diverse data models. Ontology Based Data Integration (OBDI) has been …

Nowadays, Knowledge Graphs (KG) are among the most powerful mechanisms to represent
knowledge and integrate data from multiple domains. However, most of the available data …

RDF knowledge graphs (KG) are powerful data structures to represent factual statements
created from heterogeneous data sources. KG creation is laborious and demands data …

Cultural heritage images are among the primary media for communicating and preserving
the cultural values of a society. The images represent concrete and abstract content and …

Data has exponentially grown in the last years, and knowledge graphs constitute powerful
formalisms to integrate a myriad of existing data sources. Transformation functions–specified …

Knowledge graphs have proven to be a powerful technology to integrate and structure the
myriad of data available nowadays. The semantic web community has actively worked on …

Abstract Building Information Modelling (BIM) is a key enabler to support integration of
building data within the buildings life cycle (BLC) and is an important aspect to support a …