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Semantic ScholarOlaf Hartig
Person information
- affiliation: Linköping University, Sweden
- affiliation (former): University of Waterloo, Cheriton School of Computer Science
- affiliation (former): Humboldt University of Berlin, Department of Computer Science
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2010 – today
- 2018
[c42]Muhammad Saleem, Alexander Potocki, Tommaso Soru, Olaf Hartig, Axel-Cyrille Ngonga Ngomo:
CostFed: Cost-Based Query Optimization for SPARQL Endpoint Federation. SEMANTICS 2018: 163-174- [c41]Olaf Hartig, Ian Letter, Jorge Pérez:
A Model of Distributed Query Computation in Client-Server Scenarios on the Semantic Web. IJCAI 2018: 5259-5263 - [c40]
- [e12]Matthias Wauer, Mohamed Ahmed Sherif, Muhammad Saleem, Olaf Hartig, Ricardo Usbeck, Ruben Verborgh, Axel-Cyrille Ngonga Ngomo:
Proceedings of the 3rd International Workshop on Geospatial Linked Data and the 2nd Workshop on Querying the Web of Data co-located with 15th Extended Semantic Web Conference (ESWC 2018), Heraklion, Greece, June 3, 2018. CEUR Workshop Proceedings 2110, CEUR-WS.org 2018 [contents] - 2017
- [j6]Olaf Hartig, Giuseppe Pirrò:
SPARQL with property paths on the Web. Semantic Web 8(6): 773-795 (2017) - [c39]
- [c38]Olaf Hartig:
Foundations of RDF⋆ and SPARQL⋆ (An Alternative Approach to Statement-Level Metadata in RDF). AMW 2017 - [c37]Olaf Hartig:
RDF* and SPARQL*: An Alternative Approach to Annotate Statements in RDF. International Semantic Web Conference (Posters, Demos & Industry Tracks) 2017 - [c36]Olaf Hartig, Ian Letter, Jorge Pérez:
A Formal Framework for Comparing Linked Data Fragments. International Semantic Web Conference (1) 2017: 364-382 - [c35]Alexander Potocki, Muhammad Saleem, Tommaso Soru, Olaf Hartig, Martin Voigt, Axel-Cyrille Ngonga Ngomo:
Federated SPARQL Query Processing Via CostFed. International Semantic Web Conference (Posters, Demos & Industry Tracks) 2017 - [c34]Olaf Hartig, Olivier Curé:
Semantic Data Management in Practice. WWW (Companion Volume) 2017: 901-904 - [e11]Eva Blomqvist, Diana Maynard, Aldo Gangemi, Rinke Hoekstra, Pascal Hitzler, Olaf Hartig:
The Semantic Web - 14th International Conference, ESWC 2017, Portorož, Slovenia, May 28 - June 1, 2017, Proceedings, Part I. Lecture Notes in Computer Science 10249, 2017, ISBN 978-3-319-58067-8 [contents] - [e10]Eva Blomqvist, Diana Maynard, Aldo Gangemi, Rinke Hoekstra, Pascal Hitzler, Olaf Hartig:
The Semantic Web - 14th International Conference, ESWC 2017, Portorož, Slovenia, May 28 - June 1, 2017, Proceedings, Part II. Lecture Notes in Computer Science 10250, 2017, ISBN 978-3-319-58450-8 [contents] - [e9]Eva Blomqvist, Katja Hose, Heiko Paulheim, Agnieszka Lawrynowicz, Fabio Ciravegna, Olaf Hartig:
The Semantic Web: ESWC 2017 Satellite Events - ESWC 2017 Satellite Events, Portorož, Slovenia, May 28 - June 1, 2017, Revised Selected Papers. Lecture Notes in Computer Science 10577, Springer 2017, ISBN 978-3-319-70406-7 [contents] - [i11]Olaf Hartig, Maria-Esther Vidal, Johann-Christoph Freytag:
Federated Semantic Data Management (Dagstuhl Seminar 17262). Dagstuhl Reports 7(6): 135-167 (2017) - 2016
- [b2]Olaf Hartig:
Querying a Web of Linked Data - Foundations and Query Execution. Studies on the Semantic Web 24, IOS Press 2016, ISBN 978-1-61499-630-9, pp. 1-248 - [j5]Ruben Verborgh, Miel Vander Sande, Olaf Hartig, Joachim Van Herwegen, Laurens De Vocht, Ben De Meester, Gerald Haesendonck, Pieter Colpaert:
Triple Pattern Fragments: A low-cost knowledge graph interface for the Web. J. Web Sem. 37-38: 184-206 (2016) - [j4]Olaf Hartig, Jorge Pérez:
LDQL: A query language for the Web of Linked Data. J. Web Sem. 41: 9-29 (2016) - [c33]Olaf Hartig, Carlos Buil Aranda:
Bindings-Restricted Triple Pattern Fragments. OTM Conferences 2016: 762-779 - [c32]Magnus Knuth, Olaf Hartig, Harald Sack:
Scheduling Refresh Queries for Keeping Results from a SPARQL Endpoint Up-to-Date (Short Paper). OTM Conferences 2016: 780-791 - [c31]Olaf Hartig, Carlos Buil Aranda:
Reducing the Network Load of Triple Pattern Fragments by Supporting Bind Joins. International Semantic Web Conference (Posters & Demos) 2016 - [c30]Olaf Hartig, M. Tamer Özsu:
Walking Without a Map: Ranking-Based Traversal for Querying Linked Data. International Semantic Web Conference (1) 2016: 305-324 - [e8]Olaf Hartig, Juan F. Sequeda, Aidan Hogan:
Proceedings of the 7th International Workshop on Consuming Linked Data co-located with 15th International Semantic Web Conference, COLD@ISWC 2015, Kobe, Japan, October 18, 2016. CEUR Workshop Proceedings 1666, CEUR-WS.org 2016 [contents] - [i10]Olaf Hartig, M. Tamer Özsu:
Walking without a Map: Optimizing Response Times of Traversal-Based Linked Data Queries (Extended Version). CoRR abs/1607.01046 (2016) - [i9]Magnus Knuth, Olaf Hartig, Harald Sack:
Scheduling Refresh Queries for Keeping Results from a SPARQL Endpoint Up-to-Date (Extended Version). CoRR abs/1608.08130 (2016) - [i8]Olaf Hartig, Carlos Buil Aranda:
brTPF: Bindings-Restricted Triple Pattern Fragments (Extended Preprint). CoRR abs/1608.08148 (2016) - 2015
- [c29]
- [c28]Olaf Hartig, Giuseppe Pirrò:
A Context-Based Semantics for SPARQL Property Paths Over the Web. ESWC 2015: 71-87 - [c27]Günes Aluç, M. Tamer Özsu, Khuzaima Daudjee, Olaf Hartig:
Executing queries over schemaless RDF databases. ICDE 2015: 807-818 - [c26]Olaf Hartig, Jorge Pérez:
LDQL: A Query Language for the Web of Linked Data. International Semantic Web Conference (1) 2015: 73-91 - [e7]Olaf Hartig, Juan F. Sequeda, Aidan Hogan:
Proceedings of the 6th International Workshop on Consuming Linked Data co-located with 14th International Semantic Web Conference (ISWC 2105), Bethlehem, Pennsylvania, USA, October 12th, 2015. CEUR Workshop Proceedings 1426, CEUR-WS.org 2015 [contents] - [i7]Olaf Hartig, Giuseppe Pirrò:
A Context-Based Semantics for SPARQL Property Paths over the Web (Extended Version). CoRR abs/1503.04831 (2015) - [i6]Olaf Hartig, Jorge Pérez:
LDQL: A Query Language for the Web of Linked Data (Extended Version). CoRR abs/1507.04614 (2015) - 2014
- [b1]Olaf Hartig:
Querying a Web of Linked Data. AKA 2014, ISBN 978-3-89838-713-2, pp. 1-248 - [j3]Olaf Hartig:
Querying a web of linked data: foundations and query execution. SIGWEB Newsletter 2014(Autumn): 3:1-3:2 (2014) - [c25]
- [c24]Ruben Verborgh, Olaf Hartig, Ben De Meester, Gerald Haesendonck, Laurens De Vocht, Miel Vander Sande, Richard Cyganiak, Pieter Colpaert, Erik Mannens, Rik Van de Walle:
Low-Cost Queryable Linked Data through Triple Pattern Fragments. International Semantic Web Conference (Posters & Demos) 2014: 13-16 - [c23]Tom De Nies, Davide Ceolin, Paul T. Groth, Olaf Hartig, Stephen Marsh:
Overview of METHOD 2014: the 3rd International Workshop on Methods for Establishing Trust of (Open) Data. URSW 2014: 53-54 - [c22]Ruben Verborgh, Olaf Hartig, Ben De Meester, Gerald Haesendonck, Laurens De Vocht, Miel Vander Sande, Richard Cyganiak, Pieter Colpaert, Erik Mannens, Rik Van de Walle:
Querying Datasets on the Web with High Availability. International Semantic Web Conference (1) 2014: 180-196 - [c21]Günes Aluç, Olaf Hartig, M. Tamer Özsu, Khuzaima Daudjee:
Diversified Stress Testing of RDF Data Management Systems. International Semantic Web Conference (1) 2014: 197-212 - [c20]Olaf Hartig, M. Tamer Özsu:
Reachable subwebs for traversal-based query execution. WWW (Companion Volume) 2014: 541-546 - [p1]Olaf Hartig:
Linked Data Query Processing Based on Link Traversal. Linked Data Management 2014: 263-283 - [e6]Fernando Bobillo, Rommel N. Carvalho, Davide Ceolin, Paulo Cesar G. da Costa, Claudia d'Amato, Nicola Fanizzi, Kathryn B. Laskey, Kenneth J. Laskey, Thomas Lukasiewicz, Trevor P. Martin, Matthias Nickles, Michael Pool, Tom De Nies, Olaf Hartig, Paul T. Groth, Stephen Marsh:
Proceedings of the 10th International Workshop on Uncertainty Reasoning for the Semantic Web (URSW 2014) co-located with the 13th International Semantic Web Conference (ISWC 2014), Riva del Garda, Italy, October 19, 2014. CEUR Workshop Proceedings 1259, CEUR-WS.org 2014 [contents] - [e5]Olaf Hartig, Aidan Hogan, Juan F. Sequeda:
Proceedings of the 5th International Workshop on Consuming Linked Data (COLD 2014) co-located with the 13th International Semantic Web Conference (ISWC 2014), Riva del Garda, Italy, October 20, 2014. CEUR Workshop Proceedings 1264, CEUR-WS.org 2014 [contents] - [i5]Olaf Hartig, Bryan Thompson:
Foundations of an Alternative Approach to Reification in RDF. CoRR abs/1406.3399 (2014) - [i4]
- 2013
- [j2]Olaf Hartig:
An Overview on Execution Strategies for Linked Data Queries. Datenbank-Spektrum 13(2): 89-99 (2013) - [c19]Olaf Hartig:
SQUIN: a traversal based query execution system for the web of linked data. SIGMOD Conference 2013: 1081-1084 - [e4]Olaf Hartig, Juan F. Sequeda, Aidan Hogan, Takahide Matsutsuka:
Proceedings of the Fourth International Workshop on Consuming Linked Data, COLD 2013, Sydney, Australia, October 22, 2013. CEUR Workshop Proceedings 1034, CEUR-WS.org 2013 [contents] - 2012
- [c18]
- [c17]Olaf Hartig, Johann-Christoph Freytag:
Foundations of traversal based query execution over linked data. HT 2012: 43-52 - [c16]
- [c15]
- [c14]Olaf Hartig, Tom Heath:
Populating personal linked data caches using context models. WWW (Companion Volume) 2012: 521-522 - [c13]
- [e3]Juan F. Sequeda, Andreas Harth, Olaf Hartig:
Proceedings of the Third International Workshop on Consuming Linked Data, COLD 2012, Boston, MA, USA, November 12, 2012. CEUR Workshop Proceedings 905, CEUR-WS.org 2012 [contents] - [i3]Olaf Hartig:
SPARQL for a Web of Linked Data: Semantics and Computability (Extended Version). CoRR abs/1203.1569 (2012) - 2011
- [c12]Olaf Hartig:
Zero-Knowledge Query Planning for an Iterator Implementation of Link Traversal Based Query Execution. ESWC (1) 2011: 154-169 - [c11]Olaf Hartig:
How Caching Improves Efficiency and Result Completeness for Querying Linked Data. LDOW 2011 - [c10]
- [e2]Olaf Hartig, Andreas Harth, Juan F. Sequeda:
Proceedings of the Second International Workshop on Consuming Linked Data (COLD2011), Bonn, Germany, October 23, 2011. CEUR Workshop Proceedings 782, CEUR-WS.org 2011 [contents] - [i2]Olaf Hartig, Johann Christoph Freytag:
Foundations of Traversal Based Query Execution over Linked Data (Extended Version). CoRR abs/1108.6328 (2011) - [i1]Juan F. Sequeda, Olaf Hartig:
Towards a Query Language for the Web of Data (A Vision Paper). CoRR abs/1110.3017 (2011) - 2010
- [j1]Olaf Hartig, Andreas Langegger:
A Database Perspective on Consuming Linked Data on the Web. Datenbank-Spektrum 10(2): 57-66 (2010) - [c9]
- [c8]Olaf Hartig, Juan F. Sequeda, Jamie Taylor, Patrick Sinclair:
How to consume linked data on the web: tutorial description. WWW 2010: 1347-1348 - [e1]Olaf Hartig, Andreas Harth, Juan F. Sequeda:
Proceedings of the First International Workshop on Consuming Linked Data, Shanghai, China, November 8, 2010. CEUR Workshop Proceedings 665, CEUR-WS.org 2010 [contents]
2000 – 2009
- 2009
- [c7]
- [c6]Olaf Hartig, Hannes Mühleisen, Johann-Christoph Freytag:
Linked Data for Building a Map of Researchers. SFSW@ESWC 2009 - [c5]Olaf Hartig, Christian Bizer, Johann Christoph Freytag:
Executing SPARQL Queries over the Web of Linked Data. International Semantic Web Conference 2009: 293-309 - [c4]
- [c3]
- 2008
- [c2]Olaf Hartig, Martin Kost, Johann Christoph Freytag:
Designing Component-Based Semantic Web Applications with DESWAP. International Semantic Web Conference (Posters & Demos) 2008 - 2007
- [c1]
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