Mapping Spreadsheets to RDF: Supporting Excel in RMLDownload PDF

Published: 23 Apr 2021, Last Modified: 05 May 2023KGCW 2021Readers: Everyone
Keywords: Spreadsheet, Excel, RML, RDF, Knowledge Graph
TL;DR: We extended RML Mapper to support Excel spreadsheets and demonstrate its capabilities in an interactive online demo.
Abstract: The RDF Mapping Language (RML) enables, among other formats, the mapping of tabular data as Comma-Separated Values (CSV) files to RDF graphs. Unfortunately, the widely used spreadsheet format is currently neglected by its specification and well-known implementations. Therefore, we extended one of the tools which is RML Mapper to support Microsoft Excel spreadsheet files and demonstrate its capabilities in an interactive online demo. Our approach allows to access various meta data of spreadsheet cells in typical RML maps. Some experimental features for more specific use cases are also provided. The implementation code is publicly available in a GitHub fork.
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