Jürgen Umbrich

Primary tabs

Ph.D. Student

Fax:+353 91 495723

juergen [dot] umbrich [at] deri [dot] org

Jürgen worked with DERI Galway as Ph.D. Student from Nov 2007 to Sep 2012

Unit

Reasoning and Querying Unit

Publications

The ACE Theorem for Querying the Web of Data

Jürgen Umbrich, Claudio Gutierrez, Aidan Hogan, Marcel Karnstedt, Josiane Xavier Parreira

International World Wide Web Conference (WWW)
,
Springer
,
Rio de Janeiro
,
Brazil
,
2013
.
http://www2013.org/
Poster
- Read more about The ACE Theorem for Querying the Web of Data
Exploring the Dynamics of Linked Data

Tobias Käfer, Ahmed Abdelrahman, Jürgen Umbrich, Patrick O'Byrne, Aidan Hogan

10th Extended Semantic Web Conference
,
Springer
,
Montpellier
,
France
,
2013
.
http://aidanhogan.com/docs/dyldo-poster.pdf
Poster
- Read more about Exploring the Dynamics of Linked Data
Observing Linked Data Dynamics

Tobias Käfer, Ahmed Abdelrahman, Jürgen Umbrich, Patrick O'Byrne, Aidan Hogan

10th Extended Semantic Web Conferece
,
Springer LNCS
,
Montpellier
,
France
,
2013
.
http://aidanhogan.com/docs/dyldoeswc.pdf
Conference Paper
- Read more about Observing Linked Data Dynamics
Eight Fallacies when Querying the Web of Data

Jürgen Umbrich, Claudio Gutierrez, Aidan Hogan, Marcel Karnstedt, Josiane Xavier Parreira

4th International Workshop on Data Engineering Meets the Semantic Web (DESWEB)
2013
.
https://sites.google.com/site/desweb2013/
Workshop Paper
- Read more about Eight Fallacies when Querying the Web of Data
Searching and Browsing Linked Data with SWSE

Andreas Harth, Aidan Hogan, Jürgen Umbrich, Sheila Kinsella, Axel Polleres, Stefan Decker

In
Roberto De Virgilio, Francesco Guerra, Yannis Velegrakis
(ed.),
Semantic Search over the Web
,
Springer (to appear)
,
2013
.
http://www.springer.com/computer/database+management+%26+information+retrieval/b...
Book Chapter
- Read more about Searching and Browsing Linked Data with SWSE
Hybrid SPARQL queries: fresh vs. fast results

Jürgen Umbrich, Marcel Karnstedt, Aidan Hogan, Josiane Xavier Parreira

11th International Semantic Web Conference (ISWC'12)
,
2012
.
http://sw.deri.org/~aidanh/docs/iswc2012.pdf
Conference Paper
- Read more about Hybrid SPARQL queries: fresh vs. fast results
Improving the Recall of Live Linked Data Querying through Reasoning

Jürgen Umbrich, Aidan Hogan, Axel Polleres, Stefan Decker

International Conference on Web Reasoning and Rule Systems
,
Vienna
,
2012
.
http://sw.deri.org/~aidanh/docs/rr2012_paper12_final.pdf
Conference Paper
- Read more about Improving the Recall of Live Linked Data Querying through Reasoning
Freshening up while Staying Fast: Towards Hybrid SPARQL Queries

Jürgen Umbrich, Marcel Karnstedt, Aidan Hogan, Josiane Xavier Parreira

Knowledge Engineering and Knowledge Management (EKAW)
,
Galway
,
2012
.
http://sw.deri.org/~aidanh/docs/ekaw2012_paper71_final.pdf
Conference Paper
- Read more about Freshening up while Staying Fast: Towards Hybrid SPARQL Queries
Towards a Dynamic Linked Data Observatory

Tobias Käfer, Jürgen Umbrich, Aidan Hogan, Axel Polleres

Linked Data on the Web Workshop (LDOW2012)
Workshop at
World Wide Web Conference
,
2012
.
http://aidanhogan.com/docs/dyldo_ldow12.pdf
Workshop Paper
- Read more about Towards a Dynamic Linked Data Observatory
Linked Data and Live Querying for Enabling Support Platforms for Web Dataspaces

Jürgen Umbrich, Marcel Karnstedt, Josiane Xavier Parreira, Axel Polleres, Manfred Hauswirth

3rd International Workshop on Data Engineering Meets the Semantic Web (DESWEB)
Workshop at
International Conference on Data Engineering
,
Washington DC
,
2012
.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6313651
Workshop Paper
- Read more about Linked Data and Live Querying for Enabling Support Platforms for Web Dataspaces
An empirical survey of Linked Data conformance

Aidan Hogan, Jürgen Umbrich, Andreas Harth, Richard Cyganiak, Axel Polleres, Stefan Decker

Journal of Web Semantics
,
14
:
14–44
,
Elsevier
,
2012
.
http://sw.deri.org/~aidanh/docs/ldstudy12.pdf
Journal / Refereed Original Article
- Read more about An empirical survey of Linked Data conformance
Searching and Browsing Linked Data with SWSE: the Semantic Web Search Engine

Aidan Hogan, Andreas Harth, Jürgen Umbrich, Sheila Kinsella, Axel Polleres, Stefan Decker

Journal of Web Semantics
,
9
(
4
), :
365–401
,
Elsevier
,
2011
.
http://aidanhogan.com/docs/swse_jws.pdf
Journal / Refereed Original Article
- Read more about Searching and Browsing Linked Data with SWSE: the Semantic Web Search Engine
Enhancing Source Selection for Live Queries over Linked Data via Query Log Mining

Yuan Tian, Jürgen Umbrich, Yong Yu

JOINT INTERNATIONAL SEMANTIC TECHNOLOGY CONFERENCE
,
2011
.
Conference Paper
- Read more about Enhancing Source Selection for Live Queries over Linked Data via Query Log Mining
Improving the recall of decentralised linked data querying through implicit knowledge

Jürgen Umbrich, Aidan Hogan, Axel Polleres

2011
.
http://arxiv.org/abs/1109.0181
Technical Report
- Read more about Improving the recall of decentralised linked data querying through implicit knowledge
Comparing Data Summaries for Processing Live Queries over Linked Data

Jürgen Umbrich, Katja Hose, Marcel Karnstedt, Andreas Harth, Axel Polleres

WWW Journal, Special Issue "Querying the Data Web"
,
Springer
,
2011
.
http://www.springerlink.com/content/p72226181132j60l/
Journal / Refereed Original Article
- Read more about Comparing Data Summaries for Processing Live Queries over Linked Data
RaUL: RDFa User Interface Language – A data processing model for web applications

Armin Haller, Jürgen Umbrich, Michael Hausenblas

Proceedings of the 11th International Conference on Web Information System Engineering (WISE2010)
,
Hong Kong, China
,
2010
.
Conference Paper
- Read more about RaUL: RDFa User Interface Language – A data processing model for web applications
Scalable and Distributed Methods for Entity Matching, Consolidation and Disambiguation over Linked Data Corpora

Aidan Hogan, Antoine Zimmermann, Jürgen Umbrich, Axel Polleres, Stefan Decker

Journal of Web Semantics
,
10
:
76–110
,
Elsevier
,
2010
.
http://sw.deri.org/~aidanh/docs/entcons_jws_final.pdf
Journal / Refereed Original Article
- Read more about Scalable and Distributed Methods for Entity Matching, Consolidation and Disambiguation over Linked Data Corpora
Dataset Dynamics Compendium: Where we are so far!

Jürgen Umbrich, Boris Villazon-Terrazas, Michael Hausenblas

Consuming Linked Data Workshop (COLD 2010)
Workshop at
International Semantic Web Conference 2010
,
2010
.
http://consuminglinkeddata.org/COLD2010
Workshop Paper
- Read more about Dataset Dynamics Compendium: Where we are so far!
Towards Understanding the Changing Web: Mining the Dynamics of Linked-Data Sources and Entities

Jürgen Umbrich, Marcel Karnstedt, Sebastian Land

KDML 2010: Knowledge Discovery, Data Mining, and Machine Learning
Workshop at
LWA 2010
,
2010
.
http://www.kde.cs.uni-kassel.de/conf/lwa10/papers/kdml22.pdf
Workshop Paper
- Read more about Towards Understanding the Changing Web: Mining the Dynamics of Linked-Data Sources and Entities
Searching and Browsing Linked Data with SWSE: the Semantic Web Search Engine

Aidan Hogan, Andreas Harth, Jürgen Umbrich, Sheila Kinsella, Axel Polleres, Stefan Decker

2010
.
http://www.deri.ie/fileadmin/documents/DERI-TR-2010-07-23.pdf
Technical Report
- Read more about Searching and Browsing Linked Data with SWSE: the Semantic Web Search Engine
Some entities are more equal than others: statistical methods to consolidate Linked Data

Aidan Hogan, Axel Polleres, Jürgen Umbrich, Antoine Zimmermann,

Proceedings of the Workshop on New Forms of Reasoning for the Semantic Web: Scalable & Dynamic (NeFoRS2010)
Workshop at
Extended Semantic Web Conference (ESWC2010)
,
2010
.
http://sw.deri.org/~aidanh/docs/cons_nefors10.pdf
Workshop Paper
- Read more about Some entities are more equal than others: statistical methods to consolidate Linked Data
Data Summaries for On-demand Queries over Linked Data

Andreas Harth, Katja Hose, Marcel Karnstedt, Axel Polleres, Kai-Uwe Sattler, Jürgen Umbrich

Proceedings of the 19th World Wide Web Conference (WWW2010)
,
Raleigh, NC, USA
,
2010
.
http://www.dbis.prakinf.tu-ilmenau.de/papers/dbis/2010/WWW10.pdf
Conference Paper
- Read more about Data Summaries for On-demand Queries over Linked Data
Towards Dataset Dynamics: Change Frequency of Linked Open Data Sources

Jürgen Umbrich, Michael Hausenblas, Aidan Hogan, Axel Polleres, Stefan Decker

3rd International Workshop on Linked Data on the Web (LDOW2010)
Workshop at
19th International World Wide Web Conference
,
Raleigh, North Carolina, USA
,
2010
.
http://aidanhogan.com/docs/dynamics_ldow2010.pdf
Workshop Paper
- Read more about Towards Dataset Dynamics: Change Frequency of Linked Open Data Sources
On Lightweight Data Summaries for Optimised Query Processing over Linked Data

Andreas Harth, Katja Hose, Marcel Karnstedt, Axel Polleres, Kai-Uwe Sattler, Jürgen Umbrich

2009
.
http://www.deri.ie/fileadmin/documents/DERI-TR-2009-11-17.pdf
Technical Report
- Read more about On Lightweight Data Summaries for Optimised Query Processing over Linked Data
Fast and Scalable Pattern Mining for Media-Type Focused Crawling

Jürgen Umbrich, Marcel Karnstedt, Andreas Harth

KDML 2009: Knowledge Discovery, Data Mining, and Machine Learning
Workshop at
LWA 2009
,
2009
.
http://lwa09.informatik.tu-darmstadt.de/pub/KDML/WebHome/kdml09_J.Umbrich_et_al....
Workshop Paper
- Read more about Fast and Scalable Pattern Mining for Media-Type Focused Crawling
Discovering Resources on the Web - A Comparison of Discovery Mechanism for the Web of Data and the Web of Documents

Jürgen Umbrich, Michael Hausenblas, Phil Archer, Eran Hammer-Lahav, Erik Wilde

2009
.
http://linkeddata.deri.ie/sites/linkeddata.deri.ie/files/discovery-tr-2009-08-04...
Technical Report
- Read more about Discovering Resources on the Web - A Comparison of Discovery Mechanism for the Web of Data and the Web of Documents
Web of Data Plumbing - Lowering the Barriers to Entry

Jürgen Umbrich, Hugh Glaser, Tuukka Hastrup, Ian C. Millard, Michael Hausenblas

Posters and Demos at the 8th International Semantic Web Conference (ISWC 2009)
,
-
,
Washington DC, USA
,
2009
.
http://kcap09.stanford.edu/share/posterDemos/108/paper108.pdf
Poster
- Read more about Web of Data Plumbing - Lowering the Barriers to Entry
SWSE: Objects before documents!

Andreas Harth, Aidan Hogan, Jürgen Umbrich, Stefan Decker

Proceedings of the Billion Triple Semantic Web Challenge
Workshop at
7th International Semantic Web Conference
,
Karlsruhe, Germany
,
2008
.
http://www.cs.vu.nl/~pmika/swc-2008/SWSE-paper.pdf
Workshop Paper
- Read more about SWSE: Objects before documents!
Four Heuristics to Guide Structured Content Crawling

Jürgen Umbrich, Andreas Harth, Aidan Hogan, Stefan Decker

8th International Conference on Web Engineering (Short Paper)
,
New York, USA
,
2008
.
http://icwe2008.webengineering.org/Program/Proceedings/ISBN978-0-7695-3261-5/326...
Conference Paper
- Read more about Four Heuristics to Guide Structured Content Crawling
Building a Semantic Web Search Engine: Challenges and Solutions

Andreas Harth, Aidan Hogan, Jürgen Umbrich, Stefan Decker

Proceedings of the 3rd XTech Conference, 2008
,
Dublin, Ireland
,
2008
.
http://2008.xtech.org/public/asset/attachment/415
Conference Paper
- Read more about Building a Semantic Web Search Engine: Challenges and Solutions
YARS2: A Federated Repository for Querying Graph Structured Data from the Web

Andreas Harth, Jürgen Umbrich, Aidan Hogan, Stefan Decker

Proceedings of the 6th International Semantic Web Conference
,
Busan, South Korea
,
2007
.
http://sw.deri.org/2007/02/swsepaper/iswc2007.pdf
Conference Paper
- Read more about YARS2: A Federated Repository for Querying Graph Structured Data from the Web
SWSE: Answers Before Links!

Andreas Harth, Aidan Hogan, Renaud Delbru, Jürgen Umbrich, Sean O'Riain, Stefan Decker

Proceedings of the Semantic Web Challenge
Workshop at
ISWC / ASWC
,
Busan, Korea
,
2007
.
http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-295/paper18.pd...
Workshop Paper
- Read more about SWSE: Answers Before Links!
Towards a Scalable Search and Query Engine for the Web

Aidan Hogan, Andreas Harth, Jürgen Umbrich, Stefan Decker

Demo Proceedings of 16th International World Wide Web Conference (WWW2007)
,
Banff, Alberta, Canada
,
2007
.
http://sw.deri.org/2006/08/www2007/www07poster/paper.pdf
Demonstration
- Read more about Towards a Scalable Search and Query Engine for the Web
YARS2: A Federated Repository for Searching and Querying Graph Structured Data

Andreas Harth, Jürgen Umbrich, Aidan Hogan, Stefan Decker

2007
.
http://www.deri.ie/fileadmin/documents/DERI-TR-2007-08-15.pdf
Technical Report
- Read more about YARS2: A Federated Repository for Searching and Querying Graph Structured Data
MultiCrawler: A Pipelined Architecture for Crawling and Indexing Semantic Web Data

Andreas Harth, Jürgen Umbrich, Stefan Decker

Proceedings of the 5th International Semantic Web Conference
,
Athens, GA, USA
,
2006
.
Conference Paper
- Read more about MultiCrawler: A Pipelined Architecture for Crawling and Indexing Semantic Web Data

Events

SEMIC 2013 - Semantic Interoperability Conference 2013

Jun 21 - Jun 21, 2013

The Semantic Interoperability Conference 2013 – SEMIC 2013– offers a unique opportunity to explore and discuss how Public Administrations are fostering interoperability across borders and sectors. By making information exchange more efficient and effective, public administrations can operate at lower costs and provide better services.

Dublin, Ireland

ESWC 2013 Semantics and Big Data

May 26 - May 30, 2013

Montpellier, France

@deri

johnbreslin Delighted to announce that @Microsoft and @Samsung will speak at @Eurapp Shape the Future App Economy of Europe event t.co/ysRWxxnw12
4 days 2 hours ago.
theirishpenguin Heh heh @MihaiVB Ya, the Computer and Communications Museum of Ireland at @deri is fantastic! Lots of nostalgia :) #railsgirlsgalway
6 days 22 hours ago.
eurapp #Eurapp is featured on the #CORDIS Express this week: thanks @myCORDIS! t.co/vvhzp48xAQ t.co/ykYANFnuAh @DERI @G gaOMResear
1 week 1 day ago.

Jobs

IRCSET Fellowships

Research Fellow in Linked Stream Processing and Infrastructures

Post Doc – Research Associate(s) (2 Positions)

Open Positions

Main menu

You are here