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Constrained regular expressions in SPARQL
, 2007 We have proposed an extension of SPARQL, called PSPARQL, to characterize paths of variable lengths in an RDF knowledge base (e.g. "Does there exists a trip from town A to town B?"). However, PSPARQL queries do not allow expressing constraints on internal nodes (e.g. "Moreover, one of the stops must provide a wireless access.").
Alkhateeb, Faisal +2 more
openaire +2 more sources
Regular-expression derivatives re-examined [PDF]
, 2009 Scott Owens, John Reppy, Aaron Turon
openalex +1 more source
On Extended Regular Expressions [PDF]
, 2009 Benjamin Carle, Paliath Narendran
openalex +1 more source
Extending regular expressions with homomorphic replacement [PDF]
, 2010 Henning Bordihn +2 more
openalex +1 more source
On Equivalences for a Class of Timed Regular Expressions
, 2004 Riccardo Pucella
openalex +1 more source
Adding regular expressions to graph reachability and pattern queries [PDF]
, 2011 Wenfei Fan +4 more
openalex +1 more source
Regular expression order-sorted unification and matching.
J Symb Comput, 2015 Kutsia T, Marin M.
europepmc +1 more source