Automatic generation of R2RML and RML mappings

Tefemapper is an automatic RML and R2RML mapping tool that generates mappings from a data source that can be either a database or a set of files in different formats and an input ontology. It deals with the matching of elements between both sources by applying string similarity metrics and comparing the structure schema of both input sources. The results show that Tefemapper can work correctly for different data formats and can be useful for the creation of RDF mappings in multiple projects, competing against other projects around this topic, although it has only achieved limited automation as well as its predecessors. In this work, it is first presented an introduction to mapping languages and different mapping tools throughout the history of this topic. Then, the inner workings and development of Tefemapper is explained in its own section. In the end, an evaluation about Tefemapper is described with respect to other state of the art systems using the RODI benchmark tool and using other types of input sources to show its ability to process different data formats