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Jürgen Umbrich
Jürgen Umbrich
Onlim GmbH, Austria
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YARS2: A federated repository for querying graph structured data from the web
A Harth, J Umbrich, A Hogan, S Decker
The Semantic Web, 211-224, 2007
4052007
SPARQL web-querying infrastructure: ready for action?
C Buil-Aranda, A Hogan, J Umbrich, PY Vandenbussche
The Semantic Web–ISWC 2013: 12th International Semantic Web Conference …, 2013
3512013
Searching and browsing linked data with SWSE: the semantic web search engine
A Hogan, A Harth, J Umbrich, S Kinsella, A Polleres, S Decker
Web Semantics: Science, Services and Agents on the World Wide Web, 2011
3142011
Introduction: what is a knowledge graph?
D Fensel, U Şimşek, K Angele, E Huaman, E Kärle, O Panasiuk, I Toma, ...
Knowledge graphs: Methodology, tools and selected use cases, 1-10, 2020
3042020
Data summaries for on-demand queries over linked data
A Harth, K Hose, M Karnstedt, A Polleres, KU Sattler, J Umbrich
Proceedings of the 19th international conference on World wide web, 411-420, 2010
2782010
An empirical survey of Linked Data conformance
A Hogan, J Umbrich, A Harth, R Cyganiak, A Polleres, S Decker
272*
Knowledge graphs
D Fensel, U Simsek, K Angele, E Huaman, E Kärle, O Panasiuk, I Toma, ...
Springer International Publishing, 2020
2602020
Automated quality assessment of metadata across open data portals
S Neumaier, J Umbrich, A Polleres
Journal of Data and Information Quality (JDIQ) 8 (1), 1-29, 2016
2322016
Observing linked data dynamics
T Käfer, A Abdelrahman, J Umbrich, P O’Byrne, A Hogan
The Semantic Web: Semantics and Big Data: 10th International Conference …, 2013
1782013
Comparison of metadata quality in open data portals using the Analytic Hierarchy Process
S Kubler, J Robert, S Neumaier, J Umbrich, Y Le Traon
Government Information Quarterly 35 (1), 13-29, 2018
1752018
Towards dataset dynamics: Change frequency of linked open data sources
J Umbrich, M Hausenblas, A Hogan, A Polleres, S Decker
CEUR, 2010
1462010
LDSpider: An open-source crawling framework for the Web of Linked Data
R Isele, J Umbrich, C Bizer, A Harth
9th International Semantic Web Conference (ISWC2010), 2010
1442010
Scalable and Distributed Methods for Entity Matching, Consolidation and Disambiguation over Linked Data Corpora
A Hogan, A Zimmermann, J Umbrich, A Polleres, S Decker
Web Semantics: Science, Services and Agents on the World Wide Web, 2011
1242011
Multicrawler: A pipelined architecture for crawling and indexing semantic web data
A Harth, J Umbrich, S Decker
The Semantic Web-ISWC 2006, 258-271, 2006
1202006
Quality assessment and evolution of open data portals
J Umbrich, S Neumaier, A Polleres
2015 3rd international conference on future internet of things and cloud …, 2015
1162015
Comparing data summaries for processing live queries over Linked Data
J Umbrich, K Hose, M Karnstedt, A Harth, A Polleres
World Wide Web, 1-50, 2011
1132011
SPARQLES: Monitoring public SPARQL endpoints
PY Vandenbussche, J Umbrich, L Matteis, A Hogan, C Buil-Aranda
Semantic web 8 (6), 1049-1065, 2017
1022017
Open data hopes and fears: determining the barriers of open data
M Beno, K Figl, J Umbrich, A Polleres
2017 Conference for E-Democracy and Open Government (CeDEM), 69-81, 2017
962017
Characteristics of open data CSV files
J Mitlöhner, S Neumaier, J Umbrich, A Polleres
2016 2nd International Conference on Open and Big Data (OBD), 72-79, 2016
832016
Multi-level semantic labelling of numerical values
S Neumaier, J Umbrich, JX Parreira, A Polleres
The Semantic Web–ISWC 2016: 15th International Semantic Web Conference, Kobe …, 2016
832016
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