As part of ADEQUATe project we are working on the framework for assessing and monitoring and improving quality of open data at two open data portal - data.gv.at and opendataportal.at. One of the goals of quality improvement phase is also to (semi)automatically leverage existing open data (tabular data) to Linked Data. Leveraging existing tabular data to Linked Data means to (1) classify columns using Linked Data vocabularies, (2) link cell values against Linked Data entities, and (3) discover relations in the data by searching for evidences of such relations among Linked Data sources. In the attached paper we evaluated (measured the precision and recall, discussed the lessons learned) of the approach of leveraging tabular data from the two Austrian open data portal using TableMiner+ tool.
The attached paper was presented on 30th May, 2016, at Linked Data Quality Workshop at ESWC 2016. It was well accepted and got best paper award! We were also invited to prepare an extended version to be published in ESWC Workshop Proceedings containing the collection of best papers from all ESWC 2016 Workshop events.
Tomas Knap (Semantic Web Company): Increasing Quality of Austrian Open Data by Linking them to Linked Data Sources: Lessons Learned, Linked Data Quality Workshop, ESWC 2016