OPLaX: annotating ontology design patterns at conceptual and instance level

In this paper, we present OPLaX, a language for annotating ontology design patterns (ODPs) in ontologies and knowledge graphs, which reuses and extends existing languages. This language allows an ontology designer to annotate ODPs implemented in ontologies, to relate these ODPs to the abstract modelling problems they are addressing (named conceptual components), and to link the ODPs with their instantiations in a knowledge graph (pattern instances). Moreover, we showcase its usefulness by means of 3 real-world use cases.