Jürgen Umbrich

Publication Activity (10 Years)

Years Active: 2006-2023
Publications (10 Years): 19

Top Topics

Query Execution

Top Venues

Publications

Umutcan Simsek, Elias Kärle, Kevin Angele, Elwin Huaman, Juliette Opdenplatz, Dennis Sommer, Jürgen Umbrich, Dieter Fensel
A Knowledge Graph Perspective on Knowledge Engineering. SN Comput. Sci. 4 (1) (2023)
Umutcan Simsek, Kevin Angele, Elias Kärle, Juliette Opdenplatz, Dennis Sommer, Jürgen Umbrich, Dieter Fensel
Knowledge Graph Lifecycle: Building and Maintaining Knowledge Graphs. KGCW@ESWC (2021)
Umutcan Simsek, Jürgen Umbrich, Dieter Fensel
Towards a Knowledge Graph Lifecycle: A pipeline for the population of a commercial Knowledge Graph. Qurator (2020)
Javier D. Fernández, Jürgen Umbrich, Axel Polleres, Magnus Knuth
Evaluating query and storage strategies for RDF archives. Semantic Web 10 (2) (2019)
Jeremy Debattista, Javier D. Fernández, Maria-Esther Vidal, Jürgen Umbrich
Managing the evolution and preservation of the data web. J. Web Semant. 54 (2019)
Amrapali Zaveri, Dimitris Kontokostas, Sebastian Hellmann, Jürgen Umbrich
Editorial: Special issue on quality management of Semantic Web assets (data, services and systems). Semantic Web 9 (1) (2018)
Sylvain Kubler, Jérémy Robert, Sebastian Neumaier, Jürgen Umbrich, Yves Le Traon
Comparison of metadata quality in open data portals using the Analytic Hierarchy Process. Gov. Inf. Q. 35 (1) (2018)
Pierre-Yves Vandenbussche, Jürgen Umbrich, Luca Matteis, Aidan Hogan, Carlos Buil Aranda
SPARQLES: Monitoring public SPARQL endpoints. Semantic Web 8 (6) (2017)
Sebastian Neumaier, Axel Polleres, Simon Steyskal, Jürgen Umbrich
Data Integration for Open Data on the Web. Reasoning Web (2017)
Vadim Savenkov, Qaiser Mehmood, Jürgen Umbrich, Axel Polleres
Counting to k or how SPARQL1.1 Property Paths Can Be Extended to Top-k Path Queries. SEMANTiCS (2017)
Martin Beno, Kathrin Figl, Jürgen Umbrich, Axel Polleres
Open Data Hopes and Fears: Determining the Barriers of Open Data. CeDEM (2017)
Sebastian Neumaier, Jürgen Umbrich, Axel Polleres
Lifting Data Portals to the Web of Data. LDOW@WWW (2017)
Johann Mitlöhner, Sebastian Neumaier, Jürgen Umbrich, Axel Polleres
Characteristics of Open Data CSV Files. OBD (2016)
Sebastian Neumaier, Jürgen Umbrich, Axel Polleres
Automated Quality Assessment of Metadata across Open Data Portals. ACM J. Data Inf. Qual. 8 (1) (2016)
Sebastian Neumaier, Jürgen Umbrich, Josiane Xavier Parreira, Axel Polleres
Multi-level Semantic Labelling of Numerical Values. ISWC (1) (2016)
Jeremy Debattista, Javier D. Fernández, Jürgen Umbrich
Report on the 2nd Workshop on Managing the Evolution and Preservation of the Data Web (MEPDaW 2016). SIGIR Forum 50 (2) (2016)
Sebastian Neumaier, Jürgen Umbrich
Measures for Assessing the Data Freshness in Open Data Portals. OBD (2016)
Sylvain Kubler, Jérémy Robert, Yves Le Traon, Jürgen Umbrich, Sebastian Neumaier
Open Data Portal Quality Comparison using AHP. DG.O (2016)
Javier D. Fernández, Jürgen Umbrich, Axel Polleres, Magnus Knuth
Evaluating Query and Storage Strategies for RDF Archives. SEMANTiCS (2016)
Jürgen Umbrich, Sebastian Neumaier, Axel Polleres
Quality Assessment and Evolution of Open Data Portals. FiCloud (2015)
Javier D. Fernández, Patrik Schneider, Jürgen Umbrich
The DBpedia wayback machine. SEMANTiCS (2015)
Jürgen Umbrich, Aidan Hogan, Axel Polleres, Stefan Decker
Link traversal querying for a diverse Web of Data. Semantic Web 6 (6) (2015)
Jürgen Umbrich, Nina Mrzelj, Axel Polleres
Towards capturing and preserving changes on the Web of Data. DIACRON@ESWC (2015)
Javier D. Fernández, Axel Polleres, Jürgen Umbrich
Towards Efficient Archiving of Dynamic Linked Open Data. DIACRON@ESWC (2015)
Carlos Buil Aranda, Axel Polleres, Jürgen Umbrich
Strategies for Executing Federated Queries in SPARQL1.1. ISWC (2) (2014)
Pierre-Yves Vandenbussche, Aidan Hogan, Jürgen Umbrich, Carlos Buil Aranda
SPARQL: A Gateway to Open Data on the Web? ERCIM News 2014 (96) (2014)
Stefan Hagedorn, Katja Hose, Kai-Uwe Sattler, Jürgen Umbrich
Resource Planning for SPARQL Query Execution on Data Sharing Platforms. COLD (2014)
Soheila Dehghanzadeh, Josiane Xavier Parreira, Marcel Karnstedt, Jürgen Umbrich, Manfred Hauswirth, Stefan Decker
Optimizing SPARQL Query Processing on Dynamic and Static Data Based on Query Time/Freshness Requirements Using Materialization. JIST (2014)
Tobias Käfer, Ahmed Abdelrahman, Jürgen Umbrich, Patrick O'Byrne, Aidan Hogan
Observing Linked Data Dynamics. ESWC (2013)
Carlos Buil Aranda, Aidan Hogan, Jürgen Umbrich, Pierre-Yves Vandenbussche
SPARQL Web-Querying Infrastructure: Ready for Action? ISWC (2) (2013)
Nur Aini Rakhmawati, Jürgen Umbrich, Marcel Karnstedt, Ali Hasnain, Michael Hausenblas
Querying over Federated SPARQL Endpoints - A State of the Art Survey. CoRR (2013)
Nur Aini Rakhmawati, Jürgen Umbrich, Marcel Karnstedt, Ali Hasnain, Michael Hausenblas
A Comparison of Federation over SPARQL Endpoints Frameworks. KESW (2013)
Jürgen Umbrich, Claudio Gutiérrez, Aidan Hogan, Marcel Karnstedt, Josiane Xavier Parreira
The ACE theorem for querying the web of data. WWW (Companion Volume) (2013)
Tobias Käfer, Ahmed Abdelrahman, Jürgen Umbrich, Patrick O'Byrne, Aidan Hogan
Exploring the Dynamics of Linked Data. ESWC (Satellite Events) (2013)
Pierre-Yves Vandenbussche, Carlos Buil Aranda, Aidan Hogan, Jürgen Umbrich
Monitoring SPARQL Endpoint Status. ISWC (Posters & Demos) (2013)
Axel Polleres, Aidan Hogan, Renaud Delbru, Jürgen Umbrich
RDFS and OWL Reasoning for Linked Data. Reasoning Web (2013)
Jürgen Umbrich, Claudio Gutiérrez, Aidan Hogan, Marcel Karnstedt, Josiane Xavier Parreira
Eight Fallacies when querying the Web of Data. ICDE Workshops (2013)
Aidan Hogan, Antoine Zimmermann, Jürgen Umbrich, Axel Polleres, Stefan Decker
Scalable and distributed methods for entity matching, consolidation and disambiguation over linked data corpora. J. Web Semant. 10 (2012)
Jürgen Umbrich, Aidan Hogan, Axel Polleres, Stefan Decker
Improving the Recall of Live Linked Data Querying through Reasoning. RR (2012)
Jürgen Umbrich, Marcel Karnstedt, Aidan Hogan, Josiane Xavier Parreira
Freshening up while Staying Fast: Towards Hybrid SPARQL Queries. EKAW (2012)
Tobias Käfer, Jürgen Umbrich, Aidan Hogan, Axel Polleres
DyLDO: Towards a Dynamic Linked Data Observatory. LDOW (2012)
Jürgen Umbrich, Marcel Karnstedt, Josiane Xavier Parreira, Axel Polleres, Manfred Hauswirth
Linked Data and Live Querying for Enabling Support Platforms for Web Dataspaces. ICDE Workshops (2012)
Jürgen Umbrich, Marcel Karnstedt, Aidan Hogan, Josiane Xavier Parreira
Hybrid SPARQL Queries: Fresh vs. Fast Results. ISWC (1) (2012)
Aidan Hogan, Jürgen Umbrich, Andreas Harth, Richard Cyganiak, Axel Polleres, Stefan Decker
An empirical survey of Linked Data conformance. J. Web Semant. 14 (2012)
Jürgen Umbrich, Aidan Hogan, Axel Polleres
Improving the recall of decentralised linked data querying through implicit knowledge CoRR (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. J. Web Semant. 9 (4) (2011)
Yuan Tian, Jürgen Umbrich, Yong Yu
Enhancing Source Selection for Live Queries over Linked Data via Query Log Mining. JIST (2011)
Jürgen Umbrich, Katja Hose, Marcel Karnstedt, Andreas Harth, Axel Polleres
Comparing data summaries for processing live queries over Linked Data. World Wide Web 14 (5-6) (2011)
Robert Isele, Jürgen Umbrich, Christian Bizer, Andreas Harth
LDspider: An Open-source Crawling Framework for the Web of Linked Data. ISWC (Posters & Demos) (2010)
Jürgen Umbrich, Michael Hausenblas, Aidan Hogan, Axel Polleres, Stefan Decker
Towards Dataset Dynamics: Change Frequency of Linked Open Data Sources. LDOW (2010)
Andreas Harth, Katja Hose, Marcel Karnstedt, Axel Polleres, Kai-Uwe Sattler, Jürgen Umbrich
Data summaries for on-demand queries over linked data. WWW (2010)
Jürgen Umbrich, Marcel Karnstedt, Sebastian Land
Towards Understanding the Changing Web: Mining the Dynamics of Linked-Data Sources and Entities. LWA (2010)
Jürgen Umbrich, Boris Villazón-Terrazas, Michael Hausenblas
Dataset Dynamics Compendium: A Comparative Study. COLD (2010)
Armin Haller, Jürgen Umbrich, Michael Hausenblas
RaUL: RDFa User Interface Language - A Data Processing Model for Web Applications. WISE (2010)
Jürgen Umbrich, Marcel Karnstedt, Andreas Harth
Fast and Scalable Pattern Mining for Media-Type Focused Crawling. LWA (2009)
Nickolai Toupikov, Jürgen Umbrich, Renaud Delbru, Michael Hausenblas, Giovanni Tummarello
DING! Dataset Ranking using Formal Descriptions. LDOW (2009)
Jürgen Umbrich, Sebastian Blohm
Exploring the Knowledge in Semi Structured Data Sets with Rich Queries. SemSearch (2008)
Jürgen Umbrich, Andreas Harth, Aidan Hogan, Stefan Decker
Four Heuristics to Guide Structured Content Crawling. ICWE (2008)
Aidan Hogan, Andreas Harth, Jürgen Umbrich, Stefan Decker
Towards a scalable search and query engine for the web. WWW (2007)
Andreas Harth, Jürgen Umbrich, Aidan Hogan, Stefan Decker
YARS2: A Federated Repository for Querying Graph Structured Data from the Web. ISWC/ASWC (2007)
Andreas Harth, Aidan Hogan, Renaud Delbru, Jürgen Umbrich, Seán O'Riain, Stefan Decker
SWSE: Answers Before Links! Semantic Web Challenge (2007)
Andreas Harth, Jürgen Umbrich, Stefan Decker
MultiCrawler: A Pipelined Architecture for Crawling and Indexing Semantic Web Data. ISWC (2006)