Maxime Jakubowski
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View article: Bridging Gaps in RDF Validation – Insights and Innovation Opportunities in RDF Validation Practices
Bridging Gaps in RDF Validation – Insights and Innovation Opportunities in RDF Validation Practices Open
Purpose: This paper examines RDF validation practices and challenges to understand stakeholder applications, their needs, and identify areas for improvement in technologies and methodologies, thereby guiding future research and standardiza…
View article: Common Foundations for SHACL, ShEx, and PG-Schema
Common Foundations for SHACL, ShEx, and PG-Schema Open
Graphs have emerged as an important foundation for a variety of applications, including capturing and reasoning over factual knowledge, semantic data integration, social networks, and providing factual knowledge for machine learning algori…
View article: Compiling SHACL Into SQL
Compiling SHACL Into SQL Open
View article: Postulates for Provenance: Instance-based provenance for first-order logic
Postulates for Provenance: Instance-based provenance for first-order logic Open
Instance-based provenance is an explanation for a query result in the form of a subinstance of the database. We investigate different desiderata one may want to impose on these subinstances. Concretely we consider seven basic postulates fo…
View article: Expressiveness of SHACL Features and Extensions for Full Equality and Disjointness Tests
Expressiveness of SHACL Features and Extensions for Full Equality and Disjointness Tests Open
SHACL is a W3C-proposed schema language for expressing structural constraints on RDF graphs. Recent work on formalizing this language has revealed a striking relationship to description logics. SHACL expressions can use three fundamental f…
View article: Expressiveness of SHACL Features and Extensions for Full Equality and Disjointness Tests
Expressiveness of SHACL Features and Extensions for Full Equality and Disjointness Tests Open
SHACL is a W3C-proposed schema language for expressing structural constraints on RDF graphs. Recent work on formalizing this language has revealed a striking relationship to description logics. SHACL expressions can use three fundamental f…
View article: Shape Fragments
Shape Fragments Open
In constraint languages for RDF graphs, such as ShEx and SHACL, constraints on nodes and their properties in RDF graphs are known as "shapes". Schemas in these languages list the various shapes that certain targeted nodes must satisfy for …
View article: Fixpoint Semantics for Recursive SHACL
Fixpoint Semantics for Recursive SHACL Open
SHACL is a W3C-proposed language for expressing structural constraints on RDF graphs. The recommendation only specifies semantics for non-recursive SHACL; recently, some efforts have been made to allow recursive SHACL schemas. In this pape…
View article: SHACL: A Description Logic in Disguise
SHACL: A Description Logic in Disguise Open
SHACL is a W3C-proposed language for expressing structural constraints on RDF graphs. In recent years, SHACL's popularity has risen quickly. This rise in popularity comes with questions related to its place in the semantic web, particularl…