66 citations · 154 across the 21 of their papers we have counts for
3 papers · 1 filter
Worst-case Optimal Query Answering for Greedy Sets of Existential Rules and Their Subclasses
Sebastian Rudolph, Michaël Thomazo, Jean-François Baget +1
The need for an ontological layer on top of data, associated with advanced reasoning mechanisms able to exploit the semantics encoded in ontologies, has been acknowledged both in t…
Query Containment for Highly Expressive Datalog Fragments
Pierre Bourhis, Markus Krötzsch, Sebastian Rudolph
The containment problem of Datalog queries is well known to be undecidable. There are, however, several Datalog fragments for which containment is known to be decidable, most notab…
Nominals, Inverses, Counting, and Conjunctive Queries or: Why Infinity is your Friend!
Sebastian Rudolph, Birte Glimm
Description Logics are knowledge representation formalisms that provide, for example, the logical underpinning of the W3C OWL standards. Conjunctive queries, the standard query lan…