Research

Publications

Journal Articles

  • Sebastian Neumaier, Jürgen Umbrich, and Axel Polleres. Automated quality assessment of metadata across open data portals. ACM Journal of Data and Information Quality (JDIQ), 2016. [pdf]

Conference Papers

  • Sebastian Neumaier, Jürgen Umbrich, Josiane Xavier Parreira, and Axel Polleres. Multi-level semantic labelling of numerical values. In Proceedings of the 15th International Semantic Web Conference (ISWC 2016), Kobe, Japan, October 2016. Nominated for best student paper award. [pdf]
  • Johann Mitlöhner, Sebastian Neumaier, Jürgen Umbrich, and Axel Polleres. Characteristics of open data CSV files. In 2nd International Conference on Open and Big Data, Vienna, Austria, August 2016. Invited paper. [pdf]
  • Sebastian Neumaier and Jürgen Umbrich: Measures for assessing the data freshness in Open Data portals. In 2nd International Conference on Open and Big Data, Vienna, Austria, August 2016. [pdf]
  • Kubler, S., Robert, J., Le Traon, Y., Umbrich, J., & Neumaier, S. (2016, June). Open Data Portal Quality Comparison using AHP. In Proceedings of the 17th International Digital Government Research Conference on Digital Government Research (pp. 397-407). ACM. [pdf]
  • Jürgen Umbrich, Sebastian Neumaier, and Axel Polleres. Quality assessment & evolution of open data portals. In International Conference on Open and Big Data, Rome, Italy, August 2015. Best paper award. [pdf]

Workshop Papers

  • Sebastian Neumaier, Jürgen Umbrich, and Axel Polleres. Lifting data portals to the Web of Data. In WWW2017 Workshop on Linked Data on the Web (LDOW2017), Perth, Australia, April 2017. [pdf]
  • Sebastian Neumaier, Jürgen Umbrich, and Axel Polleres. Challenges of mapping current CKAN metadata to DCAT. In W3C Workshop on Smart Descriptions & Smarter Vocabularies (SDSVoc), Amsterdam, Netherlands, November 2016. [pdf]
  • Jürgen Umbrich, Sebastian Neumaier, and Axel Polleres. Towards assessing the quality evolution of open data portals. In ODQ2015: Open Data Quality: from Theory to Practice Workshop, Munich, Germany, March 2015. [pdf]

Others

  • Sebastian Neumaier, Vadim Savenkov, Svitlana Vakulenko. Talking Open Data. In Proceedings of the 14th European Semantic Web Conference (ESWC2017 – Posters and Demos Track), Portorož, Slovenia. [pdf]
  • Sebastian Neumaier. Improving Open Data Usability through Semantics. ISWC 2016 Doctoral Consortium, Kobe, Japan, October 2016. [pdf][poster]

Theses

  • Sebastian Neumaier. Open Data Quality – Assessment and Evolution of (Meta-)Data Quality in the Open Data Landscape. Vienna University of Technology, October 2015. Master Thesis. [pdf][poster]

Presentations

  • 03.04.2017: Lifting Data Portals to the Web of Data. WWW2017 Workshop on Linked Data on the Web, Perth, Australia. [pdf][pptx]
  • 1.12.2016: Challenges of mapping current CKAN metadata to DCAT. W3C Workshop on Smart Descriptions & Smarter Vocabularies, Amsterdam, Netherlands. [pdf][pptx]
  • 21.10.2016: Multi-level semantic labelling of numerical values. ISWC 2016 Research Paper, Kobe, Japan. [pdf][pptx]
  • 19.10.2016: Improving Open Data Usability through Semantics. ISWC 2016 Doctoral Consortium, Kobe, Japan. [pdf]
  • 23.08.2016: Measures for assessing the data freshness in Open Data portals. 2nd International Conference on Open and Big Data, Vienna, Austria. [pdf]
  • 12.11.2015: Open Data Quality. Diplomprüfung (Master thesis presentation), TU Vienna, Austria. [pdf][pptx]

Awards & Prices

Reviewing Activities

Journals

Conferences

  • Subreviewer: WWW 2017 (26th International World Wide Web Conference)
  • Subreviewer: ISWC 2016 (15th International Semantic Web Conference)
  • Subreviewer: Web Science 2016
  • Subreviewer: WWW 2016 (25th International World Wide Web Conference)