157 citations · 304 across the 15 of their papers we have counts for
9 papers · 1 filter
Transforming RDF-star to Property Graphs: A Preliminary Analysis of Transformation Approaches -- extended version
Ghadeer Abuoda, Daniele Dell'Aglio, Arthur Keen +1
RDF and property graph models have many similarities, such as using basic graph concepts like nodes and edges. However, such models differ in their modeling approach, expressivity,…
The Lothbrok approach for SPARQL Query Optimization over Decentralized Knowledge Graphs
Christian Aebeloe, Gabriela Montoya, Katja Hose
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 acc…
High-Level ETL for Semantic Data Warehouses -- Full Version
Rudra Pratap Deb Nath, Oscar Romero, Torben Bach Pedersen +1
The popularity of the Semantic Web (SW) encourages organizations to organize and publish semantic data using the RDF model. This growth poses new requirements to Business Intellige…
Multidimensional Enrichment of Spatial RDF Data for SOLAP -- Full Version
Nurefsan Gür, Torben Bach Pedersen, Katja Hose +1
Large volumes of spatial data and multidimensional data are being published on the Semantic Web, which has led to new opportunities for advanced analysis, such as Spatial Online An…
Star Pattern Fragments: Accessing Knowledge Graphs through Star Patterns
Christian Aebeloe, Ilkcan Keles, Gabriela Montoya +1
The Semantic Web offers access to a vast Web of interlinked information accessible via SPARQL endpoints. Such endpoints offer a well-defined interface to retrieve results for compl…
Querying Linked Data: An Experimental Evaluation of State-of-the-Art Interfaces
Gabriela Montoya, Ilkcan Keles, Katja Hose
The adoption of Semantic Web technologies, and in particular the Open Data initiative, has contributed to the steady growth of the number of datasets and triples accessible on the…
The Odyssey Approach for Optimizing Federated SPARQL Queries
Gabriela Montoya, Hala Skaf-Molli, Katja Hose
Answering queries over a federation of SPARQL endpoints requires combining data from more than one data source. Optimizing queries in such scenarios is particularly challenging not…
Partout: A Distributed Engine for Efficient RDF Processing
Luis Galárraga, Katja Hose, Ralf Schenkel
The increasing interest in Semantic Web technologies has led not only to a rapid growth of semantic data on the Web but also to an increasing number of backend applications with al…
An Experience Report of Large Scale Federations
Andreas Schwarte, Peter Haase, Michael Schmidt +2
We present an experimental study of large-scale RDF federations on top of the Bio2RDF data sources, involving 29 data sets with more than four billion RDF triples deployed in a loc…