Jürgen Umbrich 
Jürgen Umbrich
Ph.D. Student
National University of Ireland, Galway
Lower Dangan
Galway, Ireland
Fax +353 91 495541
juergen.umbrich
deri.org
National University of Ireland, Galway
Lower Dangan
Galway, Ireland
Fax +353 91 495541
juergen.umbrich
deri.orgChapters in Books
List of chapters in books published since joining DERI Galway:
Andreas Harth, Aidan Hogan, Jürgen Umbrich, Sheila Kinsella, Axel Polleres, Stefan Decker
Searching and Browsing Linked Data with SWSE.
In Roberto De Virgilio, Francesco Guerra, Yannis Velegrakis (ed.), Semantic Search over the Web
Springer (to appear), 2012.
Articles
List of articles published since joining DERI Galway:
Aidan Hogan, Jürgen Umbrich, Andreas Harth, Richard Cyganiak, Axel Polleres, Stefan Decker
An empirical survey of Linked Data conformance.
In Journal of Web Semantics (to appear), 2012. 
Aidan Hogan, Andreas Harth, Jürgen Umbrich, Sheila Kinsella, Axel Polleres, Stefan Decker
Searching and Browsing Linked Data with SWSE: the Semantic Web Search Engine.
In Journal of Web Semantics, 9(4): 365-401, 2011.
Jürgen Umbrich, Katja Hose, Marcel Karnstedt, Andreas Harth, Axel Polleres
Comparing Data Summaries for Processing Live Queries over Linked Data.
In WWW Journal, Special Issue "Querying the Data Web", 2011. 
Aidan Hogan, Antoine Zimmermann, Jürgen Umbrich, Axel Polleres, Stefan Decker
Scalable and Distributed Methods for Entity Matching, Consolidation and Disambiguation over Linked Data Corpora.
In Journal of Web Semantics (to appear), 2011.
Conference Papers
List of conference papers published since joining DERI Galway:
Yuan Tian, Jürgen Umbrich, Yong Yu
Enhancing Source Selection for Live Queries over Linked Data via Query Log Mining.
In JOINT INTERNATIONAL SEMANTIC TECHNOLOGY CONFERENCE
2011.
Armin Haller, Jürgen Umbrich, Michael Hausenblas
RaUL: RDFa User Interface Language – A data processing model for web applications.
In Proceedings of the 11th International Conference on Web Information System Engineering (WISE2010)
Hong Kong, China, 2010.
Andreas Harth, Katja Hose, Marcel Karnstedt, Axel Polleres, Kai-Uwe Sattler, Jürgen Umbrich
Data Summaries for On-demand Queries over Linked Data.
In Proceedings of the 19th World Wide Web Conference (WWW2010), ACM Press
Raleigh, NC, USA, 2010.
Jürgen Umbrich, Andreas Harth, Aidan Hogan, Stefan Decker
Four Heuristics to Guide Structured Content Crawling.
In 8th International Conference on Web Engineering (Short Paper)
New York, USA, 2008.
Andreas Harth, Aidan Hogan, Jürgen Umbrich, Stefan Decker
Building a Semantic Web Search Engine: Challenges and Solutions.
In Proceedings of the 3rd XTech Conference, 2008
Dublin, Ireland, 2008.
Andreas Harth, Jürgen Umbrich, Aidan Hogan, Stefan Decker
YARS2: A Federated Repository for Querying Graph Structured Data from the Web.
In Proceedings of the 6th International Semantic Web Conference
Busan, South Korea, 2007.
Andreas Harth, Jürgen Umbrich, Stefan Decker
MultiCrawler: A Pipelined Architecture for Crawling and Indexing Semantic Web Data.
In Proceedings of the 5th International Semantic Web Conference
Athens, GA, USA, 2006.
Demos in Proceedings
List of demo proceedings published since joining DERI Galway:
Aidan Hogan, Andreas Harth, Jürgen Umbrich, Stefan Decker
Towards a Scalable Search and Query Engine for the Web.
In Demo Proceedings of 16th International World Wide Web Conference (WWW2007)
Banff, Alberta, Canada, 2007.
Posters in Proceedings
List of poster proceedings published since joining DERI Galway:
Jürgen Umbrich, Hugh Glaser, Tuukka Hastrup, Ian C. Millard, Michael Hausenblas
Web of Data Plumbing - Lowering the Barriers to Entry.
In Posters and Demos at the 8th International Semantic Web Conference (ISWC 2009)
Washington DC, USA, 2009.
Workshop Papers
List of workshop papers published since joining DERI Galway:
Jürgen Umbrich, Marcel Karnstedt, Josiane Xavier Parreira, Axel Polleres, Manfred Hauswirth
Linked Data and Live Querying for Enabling Support Platforms for Web Dataspaces.
In 3rd International Workshop on Data Engineering Meets the Semantic Web (DESWEB)
Workshop at International Conference on Data Engineering, Washington DC , 2012.
Jürgen Umbrich, Boris Villazon-Terrazas, Michael Hausenblas
Dataset Dynamics Compendium: Where we are so far!.
In Consuming Linked Data Workshop (COLD 2010)
Workshop at International Semantic Web Conference 2010, 2010.
Jürgen Umbrich, Marcel Karnstedt, Sebastian Land
Towards Understanding the Changing Web: Mining the Dynamics of Linked-Data Sources and Entities.
In KDML 2010: Knowledge Discovery, Data Mining, and Machine Learning
Workshop at LWA 2010, 2010.
Aidan Hogan, Axel Polleres, Jürgen Umbrich, Antoine Zimmermann,
Some entities are more equal than others: statistical methods to consolidate Linked Data.
In Proceedings of the Workshop on New Forms of Reasoning for the Semantic Web: Scalable & Dynamic (NeFoRS2010), CEUR
Workshop at Extended Semantic Web Conference (ESWC2010), 2010.
Jürgen Umbrich, Michael Hausenblas, Aidan Hogan, Axel Polleres, Stefan Decker
Towards Dataset Dynamics: Change Frequency of Linked Open Data Sources.
In 3rd International Workshop on Linked Data on the Web (LDOW2010), CEUR
Workshop at 19th International World Wide Web Conference, Raleigh, North Carolina, USA, 2010.
Jürgen Umbrich, Marcel Karnstedt, Andreas Harth
Fast and Scalable Pattern Mining for Media-Type Focused Crawling.
In KDML 2009: Knowledge Discovery, Data Mining, and Machine Learning
Workshop at LWA 2009, 2009.
Nickolai Toupikov, Jürgen Umbrich, Renaud Delbru, Michael Hausenblas, Giovanni Tummarello
DING! Dataset Ranking using Formal Descriptions.
In Linked Data on the Web Workshop (LDOW09)
Workshop at 18th International World Wide Web Conference (WWW09), Madrid, Spain, 2009.
Andreas Harth, Aidan Hogan, Jürgen Umbrich, Stefan Decker
SWSE: Objects before documents!.
In Proceedings of the Billion Triple Semantic Web Challenge
Workshop at 7th International Semantic Web Conference, Karlsruhe, Germany, 2008.
Andreas Harth, Aidan Hogan, Renaud Delbru, Jürgen Umbrich, Sean O'Riain, Stefan Decker
SWSE: Answers Before Links!.
In Proceedings of the Semantic Web Challenge, CEUR Workshop Proceedings, 295, CEUR-WS.org
Workshop at ISWC / ASWC, Busan, Korea, 2007.
Technical Reports
List of technical reports published since joining DERI Galway:
Jürgen Umbrich, Aidan Hogan, Axel Polleres
Improving the recall of decentralised linked data querying through implicit knowledge.
Digital Enterprise Research Institute, 2011.
Aidan Hogan, Andreas Harth, Jürgen Umbrich, Sheila Kinsella, Axel Polleres, Stefan Decker
Searching and Browsing Linked Data with SWSE: the Semantic Web Search Engine.
DERI, 2010. (1.26 MB)
Andreas Harth, Katja Hose, Marcel Karnstedt, Axel Polleres, Kai-Uwe Sattler, Jürgen Umbrich
On Lightweight Data Summaries for Optimised Query Processing over Linked Data.
DERI Galway, 2009. (714.31 kB)
Jürgen Umbrich, Michael Hausenblas, Phil Archer, Eran Hammer-Lahav, Erik Wilde
Discovering Resources on the Web - A Comparison of Discovery Mechanism for the Web of Data and the Web of Documents .
Linked Data Research Centre, 2009.
Andreas Harth, Jürgen Umbrich, Aidan Hogan, Stefan Decker
YARS2: A Federated Repository for Searching and Querying Graph Structured Data.
Digital Enterprise Research Institute, Galway, 2007. (227.86 kB)
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