Editing OntoLex-Lemon in VocBench 3

Proceedings of the 12th Conference on Language Resources and Evaluation (LREC 2020), pages 7194–7203 Marseille, 11–16 May 2020 c⃝ European Language Resources Association (ELRA), licensed under CC-BY-NC 7194 Editing OntoLex-Lemon in VocBench 3 Manuel Fiorelli1, Armando Stellato1, Tiziano Lorenzetti1, Andrea Turbati1, Peter Schmitz2, Enrico Francesconi2, Najeh Hajlaoui2, Brahim Batouche2 1 University of Rome “Tor Vergata”, Department of Enterprise Engineering, via del Politecnico 1, 00133 Roma, Italy {fiorelli,turbati}@info.uniroma2.it, stellato@uniroma2.it, tiziano.lorenzetti@gmail.com 2 Publications Office of the European Union, Luxembourg {Peter.SCHMITZ, Enrico.FRANCESCONI}@publications.europa.eu, {Najeh.HAJLAOUI, Brahim.BATOUCHE}@ext.publications.europa.eu Abstract OntoLex-Lemon is a collection of RDF vocabularies for specifying the verbalization of ontologies in natural language. Beyond its original scope, OntoLex-Lemon, as well as its predecessor Monnet lemon, found application in the Linguistic Linked Open Data cloud to represent and interlink language resources on the Semantic Web. Unfortunately, generic ontology and RDF editors were considered inconvenient to use with OntoLex-Lemon because of its complex design patterns and other peculiarities, including indirection, reification and subtle integrity constraints. This perception led to the development of dedicated editors, trading the flexibility of RDF in combining different models (and the features already available in existing RDF editors) for a more direct and streamlined editing of OntoLex-Lemon patterns. In this paper, we investigate on the benefits gained by extending an already existing RDF editor, VocBench 3, with capabilities closely tailored to OntoLex-Lemon and on the challenges that such extension implies. The outcome of such investigation is twofold: a vertical assessment of a new editor for OntoLex-Lemon and, in the broader scope of RDF editor design, a new perspective on which flexibility and extensibility characteristics an editor should meet in order to cover new core modeling vocabularies, for which OntoLex- Lemon represents a use case. Keywords: Lemon, OntoLex, VocBench, Lexicon, RDF 1. Introduction The OntoLex1 W3C Community Group released on 10 May 2016 a final report (Cimiano, McCrae, & Buitelaar, 2016) defining the OntoLex-Lemon model (McCrae et al., 2017) for the representation of lexicons in connection to ontologies. The so-called lemon model, standing for Lexicon Model for Ontologies, was agreed by an international group including representatives of most past efforts in this area. The community group refined the foundation laid down by Monnet lemon (McCrae, Spohr, & Cimiano, 2011), and clarified its modularity, by articulating the model as a set of OWL ontologies specifying different aspects of the ontology-lexicon interface. Beyond its intended scope, OntoLex-Lemon (as well as its predecessor Monnet lemon) was applied to the representation and interlinking of wordnets and other language resources on the Semantic Web. Indeed, Chiarcos, Nordhoff, and Hellmann (2012) have acknowledged the benefits of the adoption of the linked data best practices in linguistics, and lemon (in general) became critical to the construction of the so-called Linguistic Linked Open Data2 (LLOD), a sub-cloud of the Linked Open Data cloud3 related to language resources. While ontology and RDF editors should support OntoLex- Lemon editing, McCrae, Montiel-Ponsoda, and Cimiano (2012) argued with respect to lemon that “generic data- driven editors would be difficult to use for non-expert users”. They noticed …

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