157 citations · 165 across the 5 of their papers we have counts for
5 papers
Assessing the Solid Protocol in Relation to Security & Privacy Obligations
Christian Esposito, Olaf Hartig, Ross Horne +1
The Solid specification aims to empower data subjects by giving them direct access control over their data across multiple applications. As governments are manifesting their intere…
The Future is Big Graphs! A Community View on Graph Processing Systems
Sherif Sakr, Angela Bonifati, Hannes Voigt +38
Graphs are by nature unifying abstractions that can leverage interconnectedness to represent, explore, predict, and explain real- and digital-world phenomena. Although real users a…
FedQPL: A Language for Logical Query Plans over Heterogeneous Federations of RDF Data Sources (Extended Version)
Sijin Cheng, Olaf Hartig
Federations of RDF data sources provide great potential when queried for answers and insights that cannot be obtained from one data source alone. A challenge for planning the execu…
Walking without a Map: Optimizing Response Times of Traversal-Based Linked Data Queries (Extended Version)
Olaf Hartig, M. Tamer Özsu
The emergence of Linked Data on the WWW has spawned research interest in an online execution of declarative queries over this data. A particularly interesting approach is traversal…
A Context-Based Semantics for SPARQL Property Paths over the Web (Extended Version)
Olaf Hartig, Giuseppe Pirro
As of today, there exists no standard language for querying Linked Data on the Web, where navigation across distributed data sources is a key feature. A natural candidate seems to…