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Measuring the quality of relational-to-RDF mappings

: Tarasowa, Darya; Lange, Christoph; Auer, Sören


Klinov, P.:
Knowledge engineering and the semantic web. 6th international conference, KESW 2015 : Moscow, Russia, September 30 - October 2, 2015; Proceedings
Cham: Springer International Publishing, 2015 (Communications in computer and information science 518)
ISBN: 978-3-319-24542-3 (Print)
ISBN: 978-3-319-24543-0 (Online)
International Conference on Knowledge Engineering and the Semantic Web (KESW) <6, 2015, Moscow>
Fraunhofer IAIS ()

Mapping from relational data to Linked Data (RDB2RDF) is an essential prerequisite for evolving the World Wide Web into the Web of Data. We propose a methodology to evaluate the quality of such mappings against a set of objective metrics. Our methodology, whose key principles have been approved by a survey among RDB2RDF experts, can be applied to evaluate both automatically and manually performed mappings regardless of their representation. The main contributions of the paper are: (1) assessing the quality requirements for mappings between relational databases and RDF, and (2) proposing methods for measuring how well a given mapping meets the requirements. We showcase the usage of the individual metrics with illustrative examples from a real-life application. Additionally, we provide guidelines to improve a given mapping with regard to the specific metrics.