Abstract
Knowledge Graphs (KGs) are a powerful mechanism to structure and organize data on the Web. RDF KGs are usually constructed by declaring a set of mapping rules, specified according to the grammar of a mapping language (e.g., RML), that relates the input data sources to a domain vocabulary. However, the verbosity and (manual) definition of these rules affect their global adoption. Several user-friendly serializations for different mapping languages were proposed to facilitate users with the definition of such rules, e.g., YARRRML, SMS2, XRM, or ShExML. Still, most of them do not cover all features of the mapping languages for RDF graph construction (e.g., constructing RDF-star), or they lack tooling support. In this paper, (i) we present a set of updates over the YARRRML serialisation to empower it with the latest necessities for constructing RDF graphs; (ii) we implement these new features in a new open-source translator, Yatter, currently used in different real-use cases and international projects; and (iii) we qualitatively compare our proposal against similar state-of-the-art serialisations, and their associated translators over a set of conformance test cases. Our proposal advances the declarative construction of RDF graphs and supports users in choosing an appropriate serialisation and translator for their use cases.
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Acknowledgement
The work presented in this paper is partially funded by Knowledge Spaces project (Grant PID2020-118274RB-I00 funded by MCIN/AEI/ 10.13039/501100011033) and partially supported by Flanders Make, the strategic research centre for the manufacturing industry. David Chaves-Fraga is supported by the Madrid Government (Comunidad de Madrid-Spain) under the Multiannual Agreement with Universidad Politécnica de Madrid in the line Support for R &D projects for Beatriz Galindo researchers, in the context of the V PRICIT (Regional Programme of Research and Technological Innovation).
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Iglesias-Molina, A., Chaves-Fraga, D., Dasoulas, I., Dimou, A. (2023). Human-Friendly RDF Graph Construction: Which One Do You Chose?. In: Garrigós, I., Murillo Rodríguez, J.M., Wimmer, M. (eds) Web Engineering. ICWE 2023. Lecture Notes in Computer Science, vol 13893. Springer, Cham. https://doi.org/10.1007/978-3-031-34444-2_19
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