Data Integration for (Linked?) Open Data on the Web

Date: February 2, 2018

Speaker: Axel Polleres

Abstract

The global trend of publishing data on the Web is slowly transforming the Web of Documents to a Web of Data. A particular trend here is the publication of Open Data, so far mainly by public administrations under the label of Open Government Data. In this talk, coming from a semantic Web perspective and based on a concrete example use case from integrating open data about cities [1], we will raise the question on what is the right knowledge representation for the Data we find on the Web or for knowledge graphs in general. Moreover, I will report on some efforts within our research group to collect, integrate, and make Open Data more consumable and understandable, and improve its quality: we have built an experimental platform and archive for Open Data from (currently) over 260 open data portals worldwide [2] and aim at addressing the research question of building an open data knowledge graph [3]. Disclaimer: In the interest of time I will not be able to introduce all research on going in my group, but will provide some pointers and materials in the end.

I would be most interested in discussions around how these topics connect with data integration and applications of Linked Data in the Bioinformatics domain.

References

• Stefan Bischof, Andreas Harth, Benedikt Kämpgen, Axel Polleres, and Patrik Schneider. Enriching integrated statistical open city data by combining equational knowledge and missing value imputation. Journal of Web Semantics (JWS), October 2017. In press. [ .pdf ]
• Sebastian Neumaier, Jürgen Umbrich, and Axel Polleres. Automated quality assessment of metadata across open data portals. ACM Journal of Data and Information Quality (JDIQ), 8(1):2, November 2016. [ .pdf ]
• Sebastian Neumaier, Jürgen Umbrich, Josiane Parreira, and Axel Polleres. Multi-level semantic labelling of numerical values. In Proceedings of the 15th International Semantic Web Conference (ISWC 2016) - Part I, volume 9981 of Lecture Notes in Computer Science (LNCS), pages 428--445, Kobe, Japan, October 2016. Springer. [ .pdf ]

Presentation: Slides are available here.