| CARVIEW |
Aidan Hogan 
I'm Aidan. This is my academic homepage.
I'm an Associate Professor in the Department of Computer Science (DCC) at the Universidad de Chile, and an Associate Researcher of the Millennium Institute for Foundational Research on Data (IMFD).
I previously worked at the Digital Enterprise Research Institute (DERI) (now called INSIGHT) based in the National University of Ireland, Galway. I started there in April 2005, doing an internship and various other things, including a PhD which I defended in February 2011. Then I did a PostDoc for two years or so. I left DERI/INSIGHT for Chile in November 2013.
My general research interest is in exploring whether or not the Semantic Web and Linked Data are good proposals for organising the content of the Web.
My main research goal is to one day write a good paper.
Research Interests
Created using PubTag, by Paula Ríos; see paper.
Publications
Click to see my publications on:
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Books
Aidan Hogan, Eva Blomqvist, Michael Cochez, Claudia d'Amato, Gerard de Melo, Claudio Gutiérrez,
Sabrina Kirrane, José Emilio Labra Gayo, Roberto Navigli, Sebastian Neumaier, Axel-Cyrille Ngonga Ngomo,
Axel Polleres, Sabbir M. Rashid, Anisa Rula, Lukas Schmelzeisen, Juan F. Sequeda, Steffen Staab and Antoine Zimmermann. "Knowledge Graphs 
".
Volume 22 of Synthesis Lectures on Data, Semantics, and Knowledge, 257
pages, ISBN:978-3-031-01918-0, Springer Nature, November 2021 (previously published by Morgan & Claypool; see OA/HTML version).
Aidan Hogan.
"The Web of Data ".
680
pages, ISBN:9783030515805, Springer Nature, October 2020.
Aidan Hogan.
"Reasoning
Techniques for the Web of Data ".
Volume 19 of Studies on the Semantic Web, 344
pages, ISBN:9781614993827, IOS Press, May 2014 (edited
version of PhD thesis).
Journal Articles
Sebastián Ferrada, Benjamín Bustos, Aidan Hogan.
"Similarity Joins and Clustering for SPARQL
". In
Semantic Web Journal 15(5): 1701–1732, 2024.
Renzo Angles, Naim Bro, Ivania Donoso-Guzmán, Juan Pablo Luna, Aidan Hogan, Juan Reutter, Henry Rosales-Méndez, Sergio Toro.
"Telar and TelarKG: Data-Driven Insights into Chile's Constitutional Process". In
Communications of the ACM 67(8): 78–79, 2024.
Diego Arroyuelo, Aidan Hogan, Gonzalo Navarro, Juan Reutter, and Domagoj Vrgoč.
"Tackling Challenges in Implementing Large-Scale Graph Databases". In
Communications of the ACM 67(8): 40–44, 2024.
Stephen Gilbert, Jakob Nikolas Kather, Aidan Hogan.
"Augmented non-hallucinating large language models as medical information curators". In
npj Digital Medicine 7(1): 2024.
Diego Arroyuelo, Adrián Gómez-Brandón, Aidan Hogan, Gonzalo Navarro, Juan Reutter, Javiel Rojas-Ledesma, Adrián Soto.
"The Ring: Worst-Case Optimal Joins in Graph Databases using (Almost) No Extra Space". In
ACM Transactions on Database Systems 49(2): 5:1--5:45, 2024 
".
Diego Arroyuelo, Adrián Gómez-Brandón, Aidan Hogan, Gonzalo Navarro, Javiel Rojas-Ledesma.
"Optimizing RPQs over a Compact Graph Representation". In
VLDB Journal 33(2): 349--374, 2024.
Claus Stadler, Muhammad Saleem, Qaiser Mehmood, Carlos Buil-Aranda, Michel Dumontier, Aidan Hogan and Axel-Cyrille Ngonga Ngomo.
"LSQ 2.0: A Linked Dataset of SPARQL Query Logs". In
Semantic Web Journal 15(1): 167--189, 2024.
Domagoj Vrgoč, Carlos Rojas, Renzo Angles, Marcelo Arenas, Diego Arroyuelo, Carlos Buil-Aranda, Aidan Hogan, Gonzalo Navarro, Cristian Riveros and Juan Romero.
"MillenniumDB: An Open-Source Graph Database System". In
Data Intelligence 5(3): 636–662, 2023.
Jhomara Luzuriaga, Emir Muñoz, Henry Rosales-Méndez and Aidan Hogan.
"Merging Web Tables for Relation Extraction with Knowledge Graphs". In
IEEE Transactions on Knowledge and Data Engineering 35(2): 1803–1816 , 2023.
Jaime Salas and Aidan Hogan.
"Semantics and Canonicalisation of SPARQL 1.1". In
Semantic Web Journal 13(5): 829–893, 2022.
Waqas Ali, Muhammad Saleem, Bin Yao, Aidan Hogan and Axel-Cyrille Ngonga Ngomo.
"A Survey of RDF Stores & SPARQL Engines for Querying Knowledge Graphs". In
VLDB Journal 31(3): 1–26, 2022.
Aidan Hogan, Eva Blomqvist, Michael Cochez, Claudia d'Amato, Gerard de Melo, Claudio Gutiérrez,
Sabrina Kirrane, José Emilio Labra Gayo, Roberto Navigli, Sebastian Neumaier, Axel-Cyrille Ngonga Ngomo,
Axel Polleres, Sabbir M. Rashid, Anisa Rula, Lukas Schmelzeisen, Juan F. Sequeda, Steffen Staab and Antoine Zimmermann
"Knowledge Graphs". In
ACM Computing Surveys 54(4): 71:1–71:37, 2021. (See extended version)
Henry Rosales-Méndez, Aidan Hogan and Barbara Poblete.
"Fine-Grained Entity Linking". In
the Journal of Web Semantics 65, 2020.
Aidan Hogan.
"The Semantic Web: Two Decades On". In
the Semantic Web Journal 11(1): 169–185, 2020.
Jose L. Martinez-Rodriguez, Aidan Hogan and Ivan Lopez-Arevalo.
"Information Extraction meets the Semantic Web: A Survey". In
the Semantic Web Journal 11(2): 255–335, 2020.
Renzo Angles, Marcelo Arenas, Pablo Barceló, Aidan Hogan, Juan Reutter and Domagoj Vrgoč.
"Foundations of Modern Query Languages for Graph Databases". In ACM Computing Surveys 50(5): 68:1-68:40 2017.
Aidan Hogan.
"Canonical Forms for Isomorphic and Equivalent RDF Graphs: Algorithms for Leaning and Labelling Blank Nodes ". In ACM Transactions on the Web 11(4): 22:1-22:62, 2017.
Pierre-Yves Vandenbussche, Jürgen Umbrich, Luca Matteis,
Aidan Hogan and Carlos Buil-Aranda.
"SPARQLES: Monitoring Public
SPARQL Endpoints". In
the Semantic Web Journal 8(6): 1049–1065, 2017.
Yasar Khan, Muhammed Saleem, Muntazir Mehdi, Aidan Hogan, Qaiser Mehmood, Dietrich
Rebholz-Schuhmann and Ratnesh Sahay.
"SAFE: SPARQL Federation over RDF
Data Cubes with Access Control". In the Journal of Biomedical
Semantics 8(1): 5:1–5:22, 2017.
Ali Hasnain, Qaiser Mehmood, Syeda Sana e Zainab and Aidan Hogan.
"SPORTAL: Profiling the
Content of Public SPARQL Endpoints".
In the International Journal on Semantic
Web and Information Systems 12(3): 134–163, 2016.
Aidan Hogan, Pascal Hitzler and Krzysztof
Janowicz.
"Linked Dataset Description
Papers at the Semantic Web Journal: A Critical Assessment".
In the Semantic Web Journal 7(2): pp.
105–116, 2016 (editorial; online).
Jürgen Umbrich, Aidan Hogan, Axel
Polleres and Stefan Decker.
"Link Traversal Querying for a
Diverse Web of Data ".
In the Semantic Web Journal 6(6): pp.
585–624, 2015 (online).
Aidan Hogan, Marcelo Arenas, Alejandro
Mallea and Axel Polleres.
"Everything You Always Wanted
to Know About Blank Nodes ".
In the Journal of Web Semantics 27: pp.
42–69, 2014 (online).
Aidan Hogan, Jürgen Umbrich, Andreas
Harth, Richard Cyganiak, Axel Polleres and Stefan Decker.
"An empirical survey of Linked Data
conformance ".
In the Journal of Web Semantics 14: pp.
14–44, 2012 (online).
Aidan Hogan, Antoine Zimmermann,
Jürgen Umbrich, Axel Polleres and Stefan Decker.
"Scalable and Distributed
Methods for Entity Matching, Consolidation and Disambiguation over
Linked Data Corpora ".
In the Journal of Web Semantics 10: pp.
76–110, 2012 (online).
Aidan Hogan, Andreas Harth, Jürgen
Umbrich, Sheila Kinsella, Axel Polleres and Stefan Decker.
"Searching and Browsing Linked Data
with SWSE: the Semantic Web Search Engine ".
In the Journal of Web Semantics 9(4): pp.
365–401, 2011 (online).
Piero A. Bonatti, Aidan Hogan, Axel
Polleres and Luigi Sauro.
"Robust and Scalable Linked
Data Reasoning Incorporating Provenance and Trust Annotations ".
In the Journal of Web Semantics 9(2): pp.
165–201, 2011 (online).
Axel Polleres, Aidan Hogan, Andreas Harth
and Stefan Decker.
"Can we ever catch up with the
Web? ".
In Semantic Web Journal 1(1–2): pp.
45–42, 2010 (online).
Aidan Hogan, Andreas Harth and Axel
Polleres.
"Scalable
Authoritative OWL Reasoning for the Web ".
In International Journal on Semantic Web
and Information Systems, 5(2), pp. 49–90, 2009.
Book Chapters
Aidan Hogan.
"Knowledge Graphs: A Guided Tour".
Chapter in Research School in Artificial Intelligence in Bergen, June 2022.
Aidan Hogan.
"Knowledge Graphs: Research Directions".
Chapter in Reasoning Web: Declarative Artificial Intelligence,
(Springer), October 2020.
Aidan Hogan.
"Linked Data
and the Semantic Web Standards ".
Chapter in Linked Data Management,
(CRC
Press), May 2014.
Axel Polleres, Aidan Hogan, Renaud
Delbru, Jürgen Umbrich.
"RDFS & OWL Reasoning for Linked
Data".
Chapter in Lecture Notes for the Reasoning
Web Summer School, Mannheim, (Springer), July 2013.
Andreas Harth, Aidan Hogan,
Jürgen Umbrich, Sheila Kinsella, Axel Polleres and Stefan Decker.
"Searching
and Browsing Linked Data with SWSE ".
Chapter in Semantic Search over
the Web, (Springer), 2012 (abridged version of JWS paper above).
Aidan Hogan, Jeff Z. Pan, Axel
Polleres and Yuan Ren.
"Scalable OWL 2 Reasoning for
Linked Data ".
Chapter in the Lecture Notes for the Reasoning Web Summer School, Galway, Ireland,
(Springer), August 2011.
Aidan Hogan, Andreas Harth and
Axel Polleres.
"Scalable
Authoritative OWL Reasoning for the Web ".
Chapter in Semantic Services,
Interoperability and Web Applications: Emerging Concepts, (IGI
Global), June 2011, (invited republication).
Conference Papers
José Fuentes-Sepúlveda, Adrián Gómez-Brandón, Aidan Hogan, Gonzalo Navarro, and Juan Reutter.
"Worst-Case-Optimal Joins on Graphs with Topological Relations".
In the Proceedings of the ACM World Wide Web Conference, Syndey, Australia, June 9–15, 2025.
Diego Arroyuelo, Benjamin Bustos, Adrián Gómez-Brandón, Aidan Hogan, Ayleen Irribarra-Cortés, Gonzalo Navarro, and Juan Reutter.
"Worst-Case-Optimal Similarity Joins on Graph Databases".
In the Proceedings of the ACM SIGMOD International Conference on Management of Data, Santiago, Chile, April 28–May 2, 2024.
Renzo Angles, Carlos Buil Aranda, Aidan Hogan, Carlos Rojas, and Domagoj Vrgoč.
"WDBench: A Wikidata Graph Query Benchmark".
In the Proceedings of the International Semantic Web Conference, Online, October 23–27, 2022.
Oren Kalinsky, Aidan Hogan, Oren Mishali, Yoav Etsion and Benny Kimelfeld.
"Exploration of Knowledge Graphs via Online Aggregation".
In the Proceedings of the International Conference on Data Engineering (ICDE), Online, May 9–12, 2022.
Diego Arroyuelo, Aidan Hogan, Gonzalo Navarro and Javiel Rojas-Ledesma
"Time- and Space-Efficient Regular Path Queries".
In the Proceedings of the International Conference on Data Engineering (ICDE), Online, May 9–12, 2022.
Alberto Moya Loustaunau, Aidan Hogan.
"Predicting SPARQL Query Dynamics".
In the Proceedings of the International Conference on Knowledge Capture (K-CAP), Online, December 2–3, 2021.
Diego Arroyuelo, Aidan Hogan, Gonzalo Navarro, Juan L. Reutter, Javiel Rojas-Ledesma and Adrián Soto.
"Worst-Case Optimal Graph Joins in Almost No Space".
In the Proceedings of the ACM SIGMOD International Conference on Management of Data, Xi'an, Shaanxi, China, [Online], June 20–25, 2021.
Sebastián Ferrada, Benjamin Bustos and Aidan Hogan.
"Extending SPARQL with Similarity Joins".
In the Proceedings of the 19th International Semantic Web Conference (ISWC), Athens, Greece, [Online], November 2–6, 2020.
Aidan Hogan, Juan Reutter and Adrián Soto.
"In-Database Graph Analytics with Recursive SPARQL".
In the Proceedings of the 19th International Semantic Web Conference (ISWC), Athens, Greece, [Online], November 2–6, 2020.
Javier Carrasco, Aidan Hogan and Jorge Pérez.
"Laconic Image Classification: Human vs. Machine Performance".
In the Proceedings of the International Conference on Information and Knowledge Management (CIKM), Galway, Ireland, [Online], October 19–23, 2020.
Hernán Vargas, Carlos Buil-Aranda, Aidan Hogan and Claudia López.
"A User Interface for Querying and Exploring Knowledge Graphs (Extended Abstract)".
In the Proceedings of the International Joint Conference on Aritificial Intelligence (IJCAI–PRICAI), Yokohama, Japan, [Online], July 11–17, 2020 (Best Papers in Sister Conferences Track).
Henry Rosales-Méndez, Aidan Hogan and Barbara Poblete.
"Fine-Grained Evaluation for Entity Linking ".
In the Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP–IJCNLP), Hong Kong, China, November 3–7, 2019.
Aidan Hogan, Cristian Riveros, Carlos Rojas and Adrián Soto.
"A Worst-Case Optimal Join Algorithm for SPARQL ".
In the Proceedings of the 18th International Semantic Web Conference (ISWC), Auckland, New Zealand, October 26–30, 2019.
Hernán Vargas, Carlos Buil-Aranda, Aidan Hogan and Claudia López.
"RDF Explorer: A Visual SPARQL Query Builder ".
In the Proceedings of the 18th International Semantic Web Conference (ISWC), Auckland, New Zealand, October 26–30, 2019. (Best Student Paper, Research Track)
José-Miguel Herrera, Aidan Hogan and Tobias Käfer.
"BTC-2019: The 2019 Billion Triple Challenge Dataset ".
In the Proceedings of the 18th International Semantic Web Conference (ISWC), Auckland, New Zealand, October 26–30, 2019 (Resources track).
Henry Rosales-Méndez, Aidan Hogan and Barbara Poblete.
"NIFify: Towards Better Quality Entity Linking Datasets ".
In the Proceedings of the 10th Latin American Web Congress (LA-WEB), San Francisco, USA, May 13–14, 2019.
Jaime Salas and Aidan Hogan.
"Canonicalisation of Monotone SPARQL Queries ".
In the Proceedings of the 17th
International Semantic Web Conference (ISWC), Monterey, USA,
October 8–12, 2018. (Best Student Paper, Research Track)
José Moreno-Vega and Aidan Hogan.
"GraFa: Scalable Faceted Browsing for RDF Graphs ".
In the Proceedings of the 17th
International Semantic Web Conference (ISWC), Monterey, USA,
October 8–12, 2018.
Daniel Hernández, Claudio Gutierrez and Aidan Hogan.
"Certain Answers for SPARQL with Blank Nodes ".
In the Proceedings of the 17th
International Semantic Web Conference (ISWC), Monterey, USA,
October 8–12, 2018.
Henry Rosales-Méndez, Aidan Hogan and Barbara Poblete.
"VoxEL: A Benchmark Dataset for Multilingual Entity Linking ".
In the Proceedings of the 17th
International Semantic Web Conference (ISWC), Monterey, USA,
October 8–12, 2018 (Resources track).
Larry González and Aidan Hogan.
"Modelling Dynamics in Semantic Web Knowledge Graphs with Formal Concept Analysis ".
In the Proceedings of the 27th Web Conference (WWW), Lyon, France,
April 23–27, 2018.
Sebastián Ferrada, Aidan Hogan and
Benjamín Bustos.
"IMGpedia: a Linked Dataset with Content-based Analysis of Wikimedia Images ".
In the Proceedings of the 16th
International Semantic Web Conference (ISWC), Vienna, Austria,
October 21–25, 2017 [Resources Track] (Best Student Paper, Resources Track).
Teresa Bracamonte, Aidan Hogan,
Barbara Poblete.
"Applying community
detection methods to cluster tags in multimedia search results ".
In the Proceedings of the 12th IEEE
International Symposium on Multimedia, San Jose, California, US,
December 11–13, 2016.
Daniel Hernández, Aidan
Hogan, Cristian Riveros, Carlos Rojas, Enzo Zerega.
"Querying
Wikidata: Comparing SPARQL, Relational and Graph Databases ".
In the Proceedings of the 15th
International Semantic Web Conference (ISWC), Kobe, Japan, October
17–21, 2016 [Resources Track].
Muhammad Saleem, Intizar Ali, Aidan
Hogan, Qaiser Mehmood, Axel-Cyrille Ngonga Ngomo.
"LSQ: The Linked SPARQL Queries
Dataset ".
In the Proceedings of the 14th
International Semantic Web Conference (ISWC), Bethlehem, Pennsylvania,
US, October 11–15, 2015 [Datasets and Ontologies Track].
Aidan Hogan.
"Skolemising Blank
Nodes while Preserving Isomorphism ".
In the Proceedings of the 24th
International World Wide Web Conference (WWW), Florence, Italy, May
18–22, 2015 (Nominated Best Paper, Research Track).
Muntazir Mehdi, Aftab Iqbal, Aidan
Hogan, Ali Hasnain, Yasar Khan, Stefan Decker, Ratnesh Sahay.
"Discovering
Domain-Specific Public SPARQL Endpoints: A Life-Sciences Use-Case ".
In the Proceedings of the 18th
International Database Engineering & Applications Symposium (IDEAS),
Porto, Portugal, July 7–9, 2014.
Emir Muñoz, Aidan Hogan,
Alessandra Mileo.
"Using Linked Data to Mine
RDF from Wikipedia's Tables".
In the Proceedings of the 7th
International ACM Web Search and Data Mining Conference (WSDM 2014), New
York City, New York, February 24–28, 2014.
Carlos Buil-Aranda, Aidan Hogan,
Jürgen Umbrich, Pierre-Yves Vandenbussche.
"SPARQL Web-Querying
Infrastructure: Ready for Action? ".
In the Proceedings of the 12th
International Semantic Web Conference (ISWC 2013), Sydney, Australia,
October 21–25, 2013, (Best Paper,
Experimental Track).
Tobias Käfer, Ahmed Abdelrahman, Jürgen Umbrich,
Patrick O'Byrne, Aidan Hogan.
"Observing Linked Data Dynamics".
In the Proceedings of the 10th Extended
Semantic Web Conference (ESWC 2013), Montpellier, France, May
26–30, 2013.
Jürgen Umbrich, Marcel Karnstedt, Aidan
Hogan and Josiane Xavier Parreira.
"Hybrid SPARQL queries: fresh vs.
fast results".
In the Proceedings of the 11th
International Semantic Web Conference (ISWC 2012), Boston, US, November
11–15, 2012.
Jürgen Umbrich, Aidan Hogan, Axel
Polleres and Stefan Decker.
"Improving the Recall of
Live Linked Data Querying through Reasoning.".
In the Proceedings of the 6th
International Conference on Web Reasoning and Rule Systems (RR 2012),
Vienna, Austria, September 10–12, 2012.
Jürgen Umbrich, Marcel Karnstedt, Aidan
Hogan and Josiane Xavier Parreira.
"Freshening up while
Staying Fast: Towards Hybrid SPARQL Queries".
In the Proceedings of the 18th
International Conference on Knowledge Engineering and Knowledge
Management Workshop (EKAW 2012), Galway, Ireland, October 8–12,
2012 [10-page paper].
Aidan Hogan, Marc Mellotte,
Gavin Powell, Dafni Stampouli.
"Towards Fuzzy
Query-Relaxation for RDF".
In 9th Extended Semantic Web
Conference (ESWC 2012), Heraklion, Crete, Greece, May 2012
[In-Use track].
Alejandro Mallea, Marcelo Arenas, Aidan
Hogan and Axel Polleres.
"On Blank Nodes ".
In the 10th International
Semantic Web Conference (ISWC 2011), Bonn, Germany, October 2011
(Nominated Best Paper & Nominated Best Student
Paper, Research Track) [talk online].
Aidan Hogan.
"Integrating Linked
Data through RDFS and OWL: Some Lessons Learnt ".
In the Proceedings of the 5th
International Conference on Web Reasoning and Rule Systems (RR 2011),
Galway, Ireland, August, 2011 (short paper).
Aidan Hogan, Jeff Z. Pan, Axel
Polleres and Stefan Decker.
"SAOR: Template Rule
Optimisations for Distributed Reasoning over 1 Billion Linked Data
Triples ".
In the Proceedings of the 9th
International Semantic Web Conference (ISWC 2010), Shanghai, China,
November 2010.
Aidan Hogan, Stefan Decker.
"On the Ostensibly Silent 'W' in OWL 2
RL ".
In the Proceedings of the 3rd
International Conference on Web Reasoning and Rule Systems (RR 2009),
Chantilly, Virginia, USA, October 25¨26, 2009.
Aidan Hogan, Andreas Harth, Axel
Polleres.
"SAOR: Authoritative Reasoning
for the Web ".
In the Proceedings of the 3rd Asian
Semantic Web Conference (ASWC 2008), Bangkok, Thailand, 2008.
Jürgen Umbrich, Andreas Harth, Aidan
Hogan, Stefan Decker.
"Four
Heuristics to Guide Structured Content Crawling ".
In the Proceedings of the 8th
International Conference on Web Engineering (ICWE 2008), New York, USA.
(Short paper).
Andreas Harth, Jürgen Umbrich, Aidan
Hogan, Stefan Decker.
"YARS2: A
Federated Repository for Searching and Querying Graph Structured Data
".
In the Proceedings of the 6th
International Semantic Web Conference (ISWC 2007), Busan, Korea,
2007 (Nominated Best Student Paper).
Workshop Papers
Alberto Moya Loustaunau, Aidan Hogan.
"QAWiki: A Knowledge Graph Question Answering & SPARQL Query Generation Dataset for Wikidata".
In the Proceedings of the Wikidata Workshop, Nara, Japan, Nov 2, 2025.
Diego Pizarro, Sergio Firmenich, Aidan Hogan.
"DataQuest: Web Augmentation with Wikidata".
In the Proceedings of the Wikidata Workshop, Nara, Japan, Nov 2, 2025.
Shakeeb Arzoo, Aidan Hogan and Stephen H. Blackwell.
"Graphing Trees: The Nodes and Edges of Nabokov's Worlds".
In the Proceedings of the International Workshop on Semantic Web and Ontology Design for Cultural Heritage (SWODCH), Tours, France, Oct 30–31, 2024.
Adriana Concha, Aidan Hogan.
"Semi-automatic mapping and extraction of RDF triples from Wikipedia tables".
In the Proceedings of the Alberto Mendelzon Workshop (AMW), Mexico City, Mexico, Sept 30–Oct 4, 2024.
Cristóbal Torres, Aidan Hogan.
"WoolNet: Finding and Visualising Paths in Knowledge Graphs".
In the Proceedings of the Alberto Mendelzon Workshop (AMW), Mexico City, Mexico, Sept 30–Oct 4, 2024.
Renzo Angles, Vicente Calisto, Javiera Díaz, Sebastián Ferrada, Aidan Hogan, Alexander Pinto, Juan Reutter, Carlos Rojas, Henry Rosales-Méndez, Hernan Sarmiento, Etienne Toussaint and Domagoj Vrgoč.
"TelarKG: a Knowledge Graph of Chile's Constitutional Process".
In the Proceedings of the Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA), Santiago, Chile, June 14, 2024.
Matías López, Sebastián Ferrada, Aidan Hogan.
"ERDoc: A Web Interface for Entity–Relation Modelling".
In the Proceedings of the 3rd International Workshop on Data Systems Education, Santiago, Chile, June 9, 2024.
Anna Sofia Lippolis, Antonis Klironomos, Daniela F. Milon-Flores, Heng Zheng, Alexane Jouglar, Ebrahim Norouzi and Aidan Hogan.
"Enhancing Entity Alignment Between Wikidata and ArtGraph using LLMs".
In the Proceedings of the International Workshop on Semantic Web and Ontology Design for Cultural Heritage (SWODCH), Athens, Greece, November 7, 2023.
Jaime Salas, Aidan Hogan.
"A Taxonomy of Basic Graph Pattern Motifs for Understanding SPARQL Query Logs".
In the Proceedings of the Alberto Mendelzon Workshop (AMW), Santiago, Chile, May 22–26, 2023.
Aidan Hogan.
"Fostering a Lively and Tenacious Web of Data".
In the Proceedings of the Managing the Evolution and Preservation of the Data Web (MEPDaW) Workshop, October 23, 2022, (Virtual).
Daniel Diomedi, Aidan Hogan.
"Entity Linking and Filling for Question Answering over Knowledge Graphs".
In the Proceedings of the Natural Language Interfaces for the Web of Data (NLIWOD) Workshop, May 29, 2022, Hersonissos, Greece.
Renzo Angles, Aidan Hogan, Ora Lassila, Carlos Rojas, Daniel Schwabe, Pedro Szekely, Domagoj Vrgoč.
"Multilayer graphs: A unified data model for graph databases".
In the Proceedings of the Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA), June 12, 2022, Philadelphia, PA, USA.
Gabriel de la Parra, Aidan Hogan
"Fast Approximate Autocompletion for SPARQL Query Builders ".
In the Proceedings of the Visualisation and Interaction for Ontologies and Linked Data (VOILA), Online, October 25, 2021 (Virtual).
Paolo Curotto, Aidan Hogan
"Suggesting Citations for Wikidata Claims based on Wikipedia's External References".
In the Proceedings of the Wikidata Workshop, Athens, Greece, October 29, 2020 (Virtual).
Marco Caballero, Aidan Hogan
"Global Vertex Similarity for Large-Scale Knowledge Graphs".
In the Proceedings of the Wikidata Workshop, Athens, Greece, October 29, 2020 (Virtual).
Ignacio Cuevas, Aidan Hogan
"Versioned Queries over RDF Archives: All You Need is SPARQL?".
In the Proceedings of the Workshop on Managing the Evolution and Preservation of the Data Web (MEPDaW), Athens, Greece, November 1, 2020 (Virtual).
Alberto Moya Loustaunau, Aidan Hogan
"Estimating the dynamics of SPARQL query results using binary classification".
In the Proceedings of the Workshop on Querying and Benchmarking the Web of Data (QuWeDa), Auckland, New Zealand, October 26, 2019.
Paula Ríos, Aidan Hogan
"PubTag: Generating Research Tag-Clouds with Keyphrase Extraction and Learning-to-Rank".
In the Proceedings of the International Workshop on Text Analytics and Retrieval (TexAR), Santiago, Chile, December 3, 2018.
Gonzalo Tartari, Aidan Hogan
"WiSP: Weighted Shortest Paths for RDF Graphs".
In the Proceedings of the Visualisation and Interaction for Ontologies and Linked Data (VOILA), Monterey, CA, U.S., October 8, 2018.
Larry González, Aidan Hogan
"A Data-Driven Graph Schema".
In the Proceedings of the Alberto Mendelzon Workshop (AMW), Calí, Colombia, May 21–25, 2018.
Henry Rosales-Mendéz, Barbara Poblete, Aidan Hogan
"What should Entity Linking link?".
In the Proceedings of the Alberto Mendelzon Workshop (AMW), Calí, Colombia, May 21–25, 2018.
Tomás Sáez, Aidan Hogan
"Automatically Generating Wikipedia Infoboxes from Wikidata".
In the Proceedings of the Wiki Workshop at WWW 2018, Lyon, France, April 24, 2018.
Sebastián Ferrada, Nicolás Bravo, Benjamin Bustos, Aidan Hogan
"Querying Wikimedia Images using Wikidata Facts".
In the Proceedings of the Wiki Workshop at WWW 2018, Lyon, France, April 24, 2018.
Aidan Hogan
"Profiling Graphs: Order from Chaos" [keynote].
In the Proceedings of the International Workshop on Profiling and Searching Data on the Web (PROFILES) at WWW 2018, Lyon, France, April 24, 2018.
Henry Rosales-Méndez, Barbara Poblete, Aidan Hogan
"Multilingual Entity Linking: Comparing English and Spanish".
In the Proceedings of the Linked Data for Information Extraction (LD4IE) Workshop at ISWC 2017, Vienna, Austria, October 22, 2017.
Sebastián Ferrada, Benjamin Bustos, Aidan Hogan
"IMGpedia: Enriching the Web
of Data with Image Content Analysis".
In the Proceedings of the Alberto
Mendelzon Workshop (AMW), Panama City, Panama, June 6–10,
2016.
Claudio Gutierrez, Daniel Hernández, Aidan Hogan, Axel Polleres
"Certain Answers
for SPARQL?".
In the Proceedings of the Alberto
Mendelzon Workshop (AMW), Panama City, Panama, June 6–10,
2016.
Daniel Hernández, Aidan
Hogan, Markus Krötzsch
"Reifying RDF:
What Works Well With Wikidata? ".
In the Proceedings of the Scalable
Semantic Web Systems Workshop (SSWS 2015) at ISWC 2015, Bethlehem, US,
October 11, 2015.
Luca Matteis, Aidan Hogan,
Roberto Navigli.
"Keyword-Based
Navigation and Search over the Linked Data Web".
In the Proceedings of the Linked Data on
the Web Workshop (LDOW 2015) at WWW 2015, Florence, Italy, May 19,
2015.
Benjamin Bustos, Aidan Hogan.
"IMGpedia: A Proposal to
Enrich DBpedia with Image Meta-Data".
In the Proceedings of the Alberto
Mendelzon Workshop (AMW), Lima, Peru, May 6–8, 2015.
Yasar Khan, Muhammad Saleem, Aftab Iqbal, Muntazir
Mehdi, Aidan Hogan, Panagiotis Hasapis,
Axel-Cyrille Ngonga Ngomo, Stefan Decker, Ratnesh Sahay.
"SAFE: Policy Aware SPARQL Query
Federation Over RDF Data Cubes".
In the Proceedings of the Semantic Web
Applications and Tools for Life Sciences (SWAT4LS), Berlin, Germany,
December 9–11, 2014.
Aidan Hogan, Claudio Gutierrez.
"Paths towards the Sustainable
Consumption of Semantic Data on the Web".
In the Proceedings of the Alberto
Mendelzon Workshop (AMW), Cartagena, Columbia, June 4–6,
2014.
Emir Muñoz, Aidan Hogan,
Alessandra Mileo.
"Triplifying Wikipedia's Tables".
In the Proceedings of the Linked Data for
Information Extraction Workshop (LD4IE 2013) at ISWC 2013, Sydney,
Australia, October 21–25, 2013.
Birte Glimm, Aidan Hogan, Markus
Krötzsch Axel Polleres.
"OWL: Yet to arrive on the Web
of Data?".
In the Proceedings of the Linked Data on
the Web WWW2012 Workshop (LDOW 2012), Lyon, France, April 16,
2012.
Tobias Käfer, Jürgen Umbrich, Aidan
Hogan, Axel Polleres.
"Towards a Dynamic Linked Data
Observatory".
In the Proceedings of the Linked Data on
the Web WWW2012 Workshop (LDOW 2012), Lyon, France, April 16,
2012.
Nuno Lopes, Antoine Zimmermann, Aidan
Hogan, Gergely Lukácsy, Axel Polleres, Umberto Straccia
and Stefan Decker.
"RDF Needs
Annotations ".
In the Proceedings of the RDF
Next Steps W3C Workshop, June 2010.
Aidan Hogan, Axel Polleres, Jürgen
Umbrich, Antoine Zimmermann.
"Some entities are more equal
than others: statistical methods to consolidate Linked Data ".
In the Proceedings of the Workshop on New
Forms of Reasoning for the Semantic Web: Scalable & Dynamic
(NeFoRS2010), Heraklion, Greece, May 30, 2010.
Aidan Hogan, Andreas Harth, Alexandre
Passant, Stefan Decker, Axel Polleres.
"Weaving the Pedantic Web
".
In the Proceedings of the Linked Data on
the Web WWW2010 Workshop (LDOW 2010), Raleigh, North Carolina, USA,
April 27, 2010.
Jürgen Umbrich, Michael Hausenblas, Aidan
Hogan, Axel Polleres, Stefan Decker.
"Towards Dataset Dynamics:
Change Frequency of Linked Open Data Sources ".
In the Proceedings of the Linked Data on
the Web WWW2010 Workshop (LDOW 2010), Raleigh, North Carolina, USA,
April 27, 2010.
Aidan Hogan, Andreas Harth, Stefan
Decker.
"Performing Object
Consolidation on the Semantic Web Data Graph ".
In the Proceedings of I3: Identity, Identifiers, Identification,
Workshop at 16th International World Wide
Web Conference (WWW2007), Banff, Alberta, Canada, 2007.
Aidan Hogan, Andreas Harth.
"The
ExpertFinder Corpus 2007 for the Benchmarking and Development of
ExpertFinding Systems ".
In the Proceedings of the 1st
International ExpertFinder Workshop, 2007, Berlin, January 16,
2007.
Aidan Hogan, Andreas Harth, Stefan
Decker.
"ReConRank: A
Scalable Ranking Method for Semantic Web Data with Context ".
In the Proceedings of the Second
International Workshop on Scalable Semantic Web Knowledge Base Systems
(SSWS 2006), Athens, GA, USA. November 5, 2006.
Aidan Hogan, Andreas Harth, John G.
Breslin.
"Podcast
Pinpointer: A Multimedia Semantic Web Application ".
In the Proceedings of the 2nd European
Workshop on the Integration of Knowledge, Semantic and Digital Media
Technologies, London, U.K. November 30 to December 1, 2005.
Short and Poster & Demo Papers
Fran Zautzik, Naim Bro, Aidan Hogan. "Surname Affinity Predicts Political Preference of Campaign Contributors in Chile".
Abstract In Complex Networks and their Applications (CNA), Istanbul, Turkey, December 10–12, 2024.
Domagoj Vrgoč, Carlos Rojas, Renzo Angles, Marcelo Arenas, Vicente Calisto, Benjamín Farías, Sebastían Ferrada, Tristan Heuer, Aidan Hogan, Gonzalo Navarro, Alexander Pinto, Juan Reutter, Henry Rosales, Etienne Toussiant.
"MillenniumDB: A Multi-modal, Multi-model Graph Database".
In the Companion Proceedings of the SIGMOD Conference, Santiago, Chile, June 9–14, 2024.
Francisca Suárez and Aidan Hogan.
"Templet: A Collaborative System for Knowledge Graph Question Answering over Wikidata".
In the Companion Proceedings of the 32nd Web Conference (TheWebConf/WWW), Austin, Texas, USA, April 30–May 4, 2023.
Bastián Inostroza, Raúl Cid and Aidan Hogan.
"RDF Playground: An Online Tool for Learning about the Semantic Web".
In the Companion Proceedings of the 32nd Web Conference (TheWebConf/WWW), Austin, Texas, USA, April 30–May 4, 2023.
Benjamín del Pino and Aidan Hogan.
"Wikidata Atlas: Putting Wikidata on the Map".
In the Companion Proceedings of the 32nd Web Conference (TheWebConf/WWW), Austin, Texas, USA, April 30–May 4, 2023.
Felipe Manen and Aidan Hogan.
"OpenCSMap: A System for Geolocating Computer Science Publications".
In the Demo Proceedings of the 19th International Semantic Web Conference (ISWC), Online, October 24–28, 2021.
Tamara Novoa-Rodríguez and Aidan Hogan.
"COVIDCube: An RDF Data Cube for Exploring Among-Country COVID-19 Correlations".
In the Demo Proceedings of the 19th International Semantic Web Conference (ISWC), Online, October 24–28, 2021.
Hernán Vargas, Carlos Buil-Aranda, Aidan Hogan and Claudia López.
"RDF Explorer: A Visual Query Builder for Semantic Web Knowledge Graphs".
In the Demo Proceedings of the 18th International Semantic Web Conference (ISWC), Auckland, New Zealand, October 26–30, 2019.
Henry Rosales-Mendez, Barbara Poblete and Aidan Hogan.
"Machine Translation vs. Multilingual Approaches for Entity Linking".
In the Poster Proceedings of the 17th
International Semantic Web Conference, Monterey, California,
October 8–12, 2018
Jaime Salas and Aidan Hogan.
"QCan: Normalising Congruent SPARQL Queries".
In the Demo Proceedings of the 17th
International Semantic Web Conference, Monterey, California,
October 8–12, 2018
Jose Moreno-Vega and Aidan Hogan.
"GraFa: Faceted Search & Browsing for the Wikidata Knowledge Graph".
In the Demo Proceedings of the 17th
International Semantic Web Conference, Monterey, California,
October 8–12, 2018
Sebastián Ferrada, Aidan Hogan and
Benjamín Bustos.
"Answering Visuo-semantic Queries with IMGpedia".
In the Poster Proceedings of the 16th
International Semantic Web Conference, Vienna, Austria,
October 21–25, 2017 (Best Poster).
Ali Hasnain, Qaiser Mehmood, Syeda Sana e Zainab, and Aidan Hogan.
"SPORTAL: Searching for
Public SPARQL Endpoints".
In the Demo Proceedings of the 15th
International Semantic Web Conference (ISWC 2016), Kobe, Japan, October
17–21, 2016.
Muhammad Saleem, Intizar Ali, Aidan
Hogan, Qaiser Mehmood, Axel-Cyrille Ngonga Ngomo.
"The LSQ Dataset: Querying
for Queries".
In the Demo Proceedings of the 14th
International Semantic Web Conference (ISWC 2015), Bethlehem, US,
October 11–15, 2015.
Pierre-Yves Vandenbussche, Carlos Buil-Aranda, Aidan Hogan, Jürgen Umbrich.
"Monitoring the Status of
SPARQL Endpoints".
In the Demo Proceedings of the 12th
International Semantic Web Conference (ISWC 2013), Sydney, Australia,
October 21–25, 2013.
Emir Muñoz, Aidan Hogan,
Alessandra Mileo.
"DRETa: Extracting RDF from
Wikitables".
In the Demo Proceedings of the 12th
International Semantic Web Conference (ISWC 2013), Sydney, Australia,
October 21–25, 2013.
Jürgen Umbrich, Claudio Gutierrez, Aidan
Hogan, Marcel Karnstedt, Josiane Xavier Parreira.
"The ACE Theorem for Querying the
Web of Data".
In the Poster Proceedings of the 22nd World
Wide Web Conference (WWW2013), Rio de Janeiro, Brazil, May 13–17,
2013.
Tobias Käfer, Ahmed Abdelrahman, Jürgen Umbrich,
Patrick O'Byrne, Aidan Hogan.
"Exploring the Dynamics of Linked
Data".
In the Poster Proceedings of the 10th Extended
Semantic Web Conference (ESWC2013), Montpellier, France, May
26–30, 2013 (Best Poster).
Jürgen Umbrich, Claudio Gutierrez, Aidan
Hogan, Marcel Karnstedt, Josiane Xavier Parreira.
"Eight Fallacies when Querying the
Web of Data".
Data Engineering meets the Semantic Web
Workshop (DESWEB Workshop at ICDE) [2-page vision paper].
Aidan Hogan, Emir Muñoz and
Jürgen Umbrich
"LODPeas: Like Peas in a LOD
(Cloud)".
In the Proceedings of the Billion Triple
Challenge 2012 (at ISWC 2012) November 13, 2012.
Aidan Hogan, Andreas Harth, Axel
Polleres.
"Scalable Authoritative OWL
Reasoning on a Billion Triples ".
In the Proceedings of the Billion Triple
Semantic Web Challenge 2008, at the 7th International Semantic Web
Conference (ISWC2008), Karlsruhe, Germany, 2008.
Andreas Harth, Aidan Hogan, Jürgen
Umbrich, Stefan Decker.
"SWSE: Objects Before Documents!
".
In the Proceedings of the Billion Triple
Semantic Web Challenge 2008, at the 7th International Semantic Web
Conference (ISWC2008), Karlsruhe, Germany, 2008.
Andreas Harth, Aidan Hogan, Jürgen
Umbrich, Renaud Delbru, Sean O'Riain, Stefan Decker.
"SWSE: Answers
Before Links! ".
In the Proceedings of the Semantic Web
Challenge 2007, at the 6th International Semantic Web Conference
(ISWC2007), Busan, Korea, 2007.
Aidan Hogan, Andreas Harth, Jürgen
Umbrich, Stefan Decker.
"Towards a
Scalable Search and Query Engine for the Web ".
In the Poster Proceedings of the 16th
International World Wide Web Conference, 2007.
Other
Aidan Hogan, Domagoj Vrgoč.
"Querying Graph Databases at Scale ". SIGMOD 2024 Companion Volume (Tutorial), 2024.
Aidan Hogan, Ian Horrocks, Andreas Hotho, Lalana Kagal.
"Transactions on Graph Data and Knowledge ". Transactions on Graph Data and Knowledge 1(1), 2023.
Javier Carrasco, Aidan Hogan, Jorge Pérez.
"¿Puede una máquina ver mejor que un humano? ". Revista: BITS de Ciencia (21), Universidad de Chile, 2021.
Various (inteview)
"Los seis cuestionamientos de expertos en informática al creador de 'Antorcha' 
". (Six questions from Computer Science experts for the creator of 'Antorcha') El Mercurio, Chilean Newspaper, February 2018.
Jens Lehmann, Sören Auer, Sarven
Capadisli, Krzysztof Janowicz, Christian Bizer, Tom Heath, Aidan Hogan,
Tim Berners-Lee.
"LDOW2017: 10th Workshop on
Linked Data on the Web ". WWW Companion Volume, 2017.
Aidan Hogan, Marta Apablaza, Sylvio
García.
"Mitos
Sobre la 'Deep Web' 
". (Myths About the 'Deep Web'.) Publimetro, Chilean Newspaper, December 2016.
Aidan Hogan.
"Big Data: A Small
Introduction ". Revista: BITS de Ciencia (11), Universidad de Chile, 2014.
José Miguel Piquer, Aidan
Hogan.
"Big
Data: ¿muerte o resurrección de los datacenters? ". (Big Data: death or
resurrection of data centres?) El Mercurio,
Chilean Newspaper, March 2014.
Alessandra Mileo, Aidan
Hogan.
"Linked
Data, Logic Programming and Black Risotto ". Association for Logic
Programming (ALP) Blog, December 2013.
Aidan Hogan.
"Towards Vertebrate Linked
Datasets ".
In the Proceedings of the Dagstuhl Seminar,
Interoperation in Complex Information Ecosystems (13252), Dagstuhl,
Germany, June 2013.
Andreas Harth, Aidan Hogan, Spyros
Kotoulas and Jacopo Urbani.
"Scalable Integration and Processing
of Linked Data ".
In the Tutorial Proceedings of the 20th
International Conference on World Wide Web (WWW 2011), Hyderabad, India,
March/April 2011.
Andreas Harth, Aidan Hogan, Jürgen
Umbrich, Stefan Decker.
"Building
a Semantic Web Search Engine: Challenges and Solutions ".
In the Proceedings of the 3rd XTech
Conference, Dublin, Ireland, 2008.
Errata
Mistakes happen. This is a list of some errata found in the
published versions of the works listed above (works with errata have
been marked above with the following symbol: ). The errata listed have been corrected in the
pre-print versions linked above.
- In the published version of "The Ring: Worst-Case Optimal Joins in Graph Databases using (Almost) No Extra Space", Theorem 7.9 holds only for cycles, not for general order graphs (see details). We thank Ruben Becker, Adrián Gómez-Brandón, Gonzalo Navarro and Nicola Prezza for this correction!
- In the published version of "Semantics and Canonicalisation of SPARQL 1.1", Table 7, in the definition for projection, it should read "dom(μ) = V ∩ dom(μ′)" instead of "dom(μ′) = V ∩ dom(μ)". We thank Median Hilal for the correction! This is corrected in the version linked above.
- In the published version of "Modelling Dynamics in Semantic Web Knowledge Graphs with Formal Concept Analysis", we stated Mean Average Error (MAE), when we intended to say Mean Absolute Error (MAE). Also on line 20 of Algorithm 1, B_i should rather be B_j'. This is corrected in the version linked above.
- In the published version of "Fast Approximate Autocompletion for SPARQL Query Builders", we claimed that "In terms of experiments, to the best of our knowledge there is no existing benchmark for autocompletion." This was erroneous: in "Efficient SPARQL Autocompletion via SPARQL", Bast et al. (also cited in the paper) define a benchmark for autocompletion with respect to Wikidata, Freebase and Fbeasy.
- In a pre-print version of "Canonical Forms for Isomorphic and Equivalent RDF Graphs: Algorithms for Leaning and Labelling Blank Nodes", Definition 3.18 forgot to specify that G' be a subset of G. Thanks to Antoine Zimmermann for pointing out this issue, along with some other minor comments! (I'm hoping to correct for the published version.) In the published version, on P24, second paragraph, as well as in Example 4.15: [_:a,_:c] should read [_:a,_:b]; [_:c,_:a] should read [_:c,_:b]; [_:c,_:i] should read [_:c,_:f]; and [_:a,_:g] should read [_:a,_:d]. Also in Algorithm 3, the recursion of the distinguish function requires making a copy of the array. Thanks to Ivan Herman for these latter corrections! Manu Sporny has pointed out that his joint (and earlier) work with Dave Longley on producing canonical labels for blank nodes was not cited in this paper; we have added this missing reference and given due credit to this earlier work. Also, on line 26 of Algorithm 6, G' should be G, the case where the join returns empty results for an intermediate solution has now been clarifed by adding lines 44–45, the condition on line 28 was fixed to assure termination, and other clarifications were added (thanks to Dan Kortschak). Finally, in the discussion after Definition 4.6, it was implied that the split of G in Example 4.5 would be G, whereas G should be split into two subgraphs (credit to Tomás Vallejos for spotting this). These issues are resolved in the version linked above.
- In the published version of "Reifying RDF: What Works Well With Wikidata?", in Table 5 and Figure 3, the standard reification and n-ary relations columns were mixed up; also, the minimum y-value (100 ms) used for Figure 3 was higher than the runtime of two query executions for Virtuoso (Q7: NR & SP), which thus did not appear in the figure. These errors are fixed in the version above.
- In the published version of "Everything you always wanted to know about blank nodes", there was a bug with how SPARQL SELECT queries were used to find non-lean graphs: we neglected to address automorphisms that would cause graphs to appear non-lean when they were actually lean. The discussion at the end of Section 4.2 and Algorithm 5 have been updated accordingly to fix the issue in the version linked here. (Here's some more details on the error I sent to my co-authors.) Also, in Theorem 3.5, it was stated that G entails H if and only if I(H) is contained in I(G); this should have stated if and only if I(G) is contained in I(H). Finally we removed a duplicate node in Figure 1 (thanks to Georg Lausen). These errors are fixed in the pre-print above.
- In the published version of the Hogan book chapter in Linked Data Management, in the first definition, I had stated "U ∩ B ∩ Lp ∩ Lt = ∅" to indicate that the sets were pair-wise disjoint; however, this does not ensure that the sets are pair-wise disjoint, just that there is no element of all four sets. The erroneous notation has been removed from the pre-print linked above. (Thanks to Basil Ell for pointing this out!)
- In the published version of the Buil-Aranda et al. paper at ISWC 2013, the percentage of endpoints falling into the availability intervals discussed in Section 5.2 did not add up to 100% but rather to 97%. Most notably, in the 95–99% interval, the percentage should be 17.4%, not 14.4%. This has been corrected in the pre-print linked above. (Thanks to Ruben Verborgh for pointing this out!)
If you found another error in one of the works listed above, please get in contact so I can list it here. It would be much appreciated!
Ph.D. Thesis
Exploiting RDFS and OWL for Integrating Heterogeneous, Large-Scale, Linked Data Corpora
Organisation and Chairing
2024
General Chair of the 23rd International Semantic Web Conference (ISWC 2024), Nov. 11–15, Baltimore, Maryland, U.S.
Diversity, Equity and Inclusion Co-Chair of the 2024 ACM SIGMOD/PODS International Conference on Management of Data (SIGMOD/PODS), June 9–15, Santiago, Chile.
2022
PC Co-Chair of the 21st International Semantic Web Conference (ISWC 2022), Oct. 23–37, Online.
2021
PC Co-Chair of the 10th International Joint Conference on Knowledge Graphs (IJCKG 2021), Dec. 06–08, Online.
Co-Organiser/Co-Chair of the 2nd Wikidata Workshop, Oct. 24, at the International Semantic Web Conference, Online.
Poster & Demo Track Co-Chair of the European Semantic Web Conference (ESWC 2021), June 06–10, Online.
2020
Co-Organiser/Co-Chair of the 4th Workshop on Storing, Querying, and Benchmarking the Web of Data (QuWeDa 2020), Nov. 1, at the International Semantic Web Conference, Online.
2019
Co-Organiser/Co-Chair of the 1st Emerging Challenges in Databases and Research Workshop, Nov. 12–15, Santa Cruz, Chile.
Co-Organiser/Co-Chair of the 3rd Workshop on Storing, Querying, and Benchmarking the Web of Data (QuWeDa 2019), Oct. 26, at the International Semantic Web Conference, Auckland, New Zealand.
In-Use Co-Chair of the 18th International Semantic Web Conference (ISWC 2019), Oct. 26–30, Auckland, New Zealand.
PC Co-Chair of the 13th Alberto Mendelzon International Workshop on Foundations of Data Management (AMW 2019), June 03–07, Asunción, Paraguay.
2017
Co-Chair of Workshops/Tutorials of the 16th International Semantic Web Conference (ISWC 2017), Oct. 21–25, Vienna, Austria.
2016
Co-Organiser/Co-Chair of the 7th International Workshop on Consuming Linked Data (COLD 2016), Oct. 18, at the International Semantic Web Conference, Kobe Japan.
2015
Co-Organiser/Co-Chair of the 6th International Workshop on Consuming Linked Data (COLD 2015), Oct. 12, at the International Semantic Web Conference, Bethlehem, US.
Co-Organiser/Co-Chair of the 3rd Alberto Mendelzon Workshop School (AMW School 2015), May 4–5, Lima, Peru.
2014
Co-Organiser/Co-Chair of the 5th International Workshop on Consuming Linked Data (COLD 2014), Oct. 19, at the International Semantic Web Conference, Riva del Garda, Italy.
Co-Organiser/Co-Chair of the 2nd Alberto Mendelzon Workshop School (AMW School 2014), June 2–3, Cartagena, Colombia.
2013
Co-Organiser/Co-Chair of the 4th International Workshop on Consuming Linked Data (COLD 2013), Oct. 21, at the International Semantic Web Conference, Sydney, Australia.
PC Memberships
- AAAI: 2013, 2015, 2021
- ACL: 2021
- CIKM: 2020
- ECAI: 2014
- EKAW: 2012, 2014, 2016, 2018
- ESWC: 2010–2015, 2017, 2018, 2020, 2022
- HyperText: 2013–2015
- ICDE: 2024
- ICDT: 2018
- IJCAI: 2011, 2013, 2015
- ISWC: 2011–2021, 2023
- JIST: 2011
- K-CAP: 2021, 2023
- KGSWC: 2020, 2021
- PODS: 2022
- RR: 2012, 2014–2016
- RuleML: 2015
- SIGMOD: 2024
- WWW: 2015, 2016, 2018–2021
- Various workshops: AMW, CKG, CrowdSem, DESWeb, EYRE, HPCSW, KOGPIT, LADaS, MEPDaW, NOiSE, OWLED, QuWeDa, SKALE, SumPRE, SWSS, WebDB, Web-KR3, WLT, WoDOOM
SPC Memberships / Sub-Track Chair / Area Chair
- AAAI: 2024
- CIKM: 2021
- ECAI: 2020
- ESWC: 2016, 2019
- ISWC: 2021, 2023
- WWW: 2022, 2023, 2024
Editor-in-Chief
Editorial Board
- Semantic Web Journal (SWJ)
- Journal of Web Semantics (JWS) [Resigned 2023]
Other Reviewing
Various journals (JWS, SWJ, IJSWIS, ACM Trans. on the Web, KAIS, IEEE Internet Computing/Intelligent Systems, JCST, etc.).
Keynote Speaker
2024
Keynote "Wikidata: A Nucleus for a Web of Open Data" at the Distributed Knowledge Graphs Plenary Meeting (COST CA19134 2024), September 10–11, 2024, Vienna, Austria.
Keynote "Knowledge Graphs in the age of Large Language Models" at the 24ème conférence francophone sur l'Extraction et la Gestion des Connaissances (EGC 2024), January 22–26, 2024, Dijon, France.
2023
Keynote "Knowledge Graphs in the age of Large Language Models" at the 19th International Conference on Semantic Systems (SEMANTICS 2023), September 20–22, 2023, Leipzig, Germany.
2022
Keynote "Managing the Evolution and Preservation of the Data Web" at the 8th International Workshop on Managing the Evolution and Preservation of the Data Web (MEPDaW 2022), October 23, 2022, Online.
2018
Keynote "Context in Graphs" at the International Workshop on Contextualized Knowledge Graphs (CKG) at ISWC 2018, October 9, 2018, Monterey, CA, US.
Keynote "Profiling Graphs: Order from Chaos" at the International Workshop on Profiling and Searching Data on the Web (PROFILES) at WWW 2018, April 24, Lyon, France.
2017
Keynote "Linked Data: Turning Practice into Theory" at the 11th Alberto Mendelzon International Workshop on Foundations of Data Management and the Web, June 7–9, Montevideo, Uruguay.
Invited Lectures
2025
Invited Lecture on "Knowledge Graphs: A Mainstream Technology that Few Know About" at the University of Galway, Insight Visitor Lecture Series, January 21, Galway, Ireland.
2024
Invited Lecture on "Knowledge Graphs: An Introduction" at the 24ème conférence francophone sur l'Extraction et la Gestion des Connaissances, École (EGC 2024), January 22–23, Dijon, France.
2023
Invited Lecture on "Knowledge Representation, Querying & Reasoning For Large Knowledge Graphs", with Sebastian Rudolph, at the International Semantic Web Research Summer School (ISWS), June 11–17, Bertinoro, Italy.
Invited Lecture on "Querying Knowledge Graphs", with Domagoj Vrgoč, at the 15th Alberto Mendelzon International Workshop on Foundations of Data Management, May 23, Santiago, Chile.
2022
Invited Lecture on "Grafos de Conocimiento" (Knowledge Graphs) at the V Escuela de Fundamentos de los Datos en JCC, November 24, Santiago, Chile.
Invited Lecture on "Introduction to Knowledge Graphs" at the International Artificial Intelligence in Bergen Research School, June 7–11, Bergen, Norway.
2020
Invited Lecture on "Knowledge Graphs: Research Directions" at the Reasoning Web Summer School, June 24–26, Online.
2019
Invited Lecture on "Semantic Web" at the KGSWC Summer School, June 23–24, Villa Clara, Cuba.
2016
Invited Lecture on "Lenguajes de Consulta para Bases de Datos de Grafos" ("Query Languages for Graph Databases"), with Pablo Barceló at the Escuela de Ciencias Informáticas, Jul. 18–23, Buenos Aires, Argentina.
2013
Invited Lecture on "Introduction to Linked Data" and "Querying Linked Data", with Jarred McGinnis, at the 3rd ESWC Summer School 2013, Sep. 2–7, Kalamaki, Greece. [Videos Online: Introduction to Linked Data, Querying Linked Data]
Invited Lecture on "Reasoning with Linked Data", with Axel Polleres, at the 9th Reasoning Web Summer School 2013 (RW2013), Jul. 30 – Aug. 2, Mannheim, Germany.
2012
Invited Lecture on "Semantic Web Languages and Standards" at the 2nd ESWC Summer School 2012, May 21–26, Kalamaki, Greece. [Video Online: Semantic Web Languages and Standards]
2011
Invited Lecture on "Scalable OWL 2 Reasoning for Linked Data", with Jeff Z. Pan, at the 7th Reasoning Web Summer School 2011 (RW2011), Aug. 23–27, Galway, Ireland. [Video Online: Part 1/Part 2]
Invited Lecture on "Introduction to RDFS and OWL" at the 5th Asian Semantic Web School 2011 (ASWS2011), Jul. 11–15, University of Incheon, Korea.
Invited Talks
2025
Invited Talk on "Large Language Models, Knowledge Graphs & Search Engines: A Crossroads for Answering Users' Questions", Bosch, Germany/Online, April 8.
Invited Talk on "Large Language Models, Knowledge Graphs & Search Engines: A Crossroads for Answering Users' Questions", University of Galway/INSIGHT, Ireland, January 22.
2024
Invited Talk on "Worst-Case Optimal Joins: Some Database Theory in Practice", TU Vien, Austria, September 9.
Invited Talk on "Large Language Models, Knowledge Graphs & Search Engines: A Crossroads for Answering Users' Questions", WU Vien, Austria, September 4.
Invited Talk on "Knowledge Graphs in the age of Large Language Models", Institute for Artificial Intelligence Seminar, University of Stuttgart, Germany (Online), January 16.
2023
Invited Talk on "Knowledge Graphs in the age of Large Language Models", Chung Ang University Seminar, Chung Ang University, Republic of Korea (Online), November 20.
Invited Talk on "Knowledge Graphs in the age of Large Language Models", DICE Group Seminar, University of Paderborn, Germany (Online), October 5.
Invited Talk on "Knowledge Graphs in the age of Large Language Models", University of Erlangen-Nuremberg, Germany, September 18.
Invited Talk on "Querying Knowledge Graphs", LIFIA, Universidad Nacional de la Plata, Argentina, July 10.
2020
Invited Talk on "Knowledge Graphs: Research Directions", CEDAS Seminar, University of Bergen, Norway (Online), November 26.
2019
Invited Talk on "Millennium Institute for Foundational Research on Data", Pucón Symposium, Puerto Varas, Chile, August 6–8.
2018
Invited Talk on "Graph Querying and Analytics", Fraunhofer Institute, Nuremburg, Germany, September 6.
2017
Invited Talk on "Wikidata: Wikipedia for the Semantic Web", Telefonica, Santiago, Chile, September 28.
2014
Invited Talk on "Semantic Web FAQs: Why? What? How? Where? When? Huh?", Universidad de Talca, Cúrico, Chile.
Tutorials
2022
Aidan Hogan, Domagoj Vrgoč. "SPIRE2022 Tutorial on Graph Databases" At 29th International Symposium on String Processing and Information Retrieval, November 8–10, Concepcíon, Chile
2014
Barbara Poblete, Aidan Hogan. "HYPERTEXT2014 Tutorial on Gaining Insights from Real-World Social Data" At 25th ACM Conference on Hypertext and Social Media, September 1–4, 2014, Santiago, Chile.
2011
Andreas Harth, Aidan Hogan, Spyros Kotoulas and Jacopo Urbani. "WWW2011 Tutorial on Scalable Integration of Linked Data". At International Semantic Web Conference, October 24, 2011, Bonn, Germany.
Andreas Harth, Aidan Hogan, Spyros Kotoulas and Jacopo Urbani. "ISWC2011 Tutorial on Scalable Integration of Linked Data". At World Wide Web Conference (WWW), March 28, 2011, Hyderabad, India.
2010
Jeff Z. Pan, Axel Polleres and Aidan Hogan. "ESWC2010 Tutorial on Scalable OWL Reasoning for Linked Data". At Extended Semantic Web Conference (ESWC), May 30, 2010, Heraklion, Greece.
Teaching
- La Web de Datos (Web of Data), English, Postgraduate, 2015–2023 (see 2023 content)
- Bases de Datos (Databases), Spanish, Undergraduate, 2016–2023 (see 2023 content)
- Procesamiento Masivo de Datos (Big Data), English, Undergraduate, 2014–2023 (see 2023 content)
- Gestión de Datos / Big Data, Spanish, Postgraduate/Professional, 2015–2023
Supervision
Current
- Alberto Moya: PhD in Computer Science
- Felipe Manen: Masters in Computer Science
- Daniel Quinteros: Masters in Information Technology
- Francisco Faúndez: Engineer in Computer Science
- Roberto Alvarado: Engineer in Computer Science
Alumni
- Jaime Salas: PhD in Computer Science
- Sebastián Ferrada: PhD in Computer Science (co-supervised with Benjamín Bustos)
- Henry Rosales-Méndez: PhD in Computer Science (co-supervised with Bárbara Poblete)
- Fran Zautzik: Masters in Data Science (co-supervised with Naim Bro)
- Cristóbal Miranda: Masters in Computer Science (co-supervised with Gonzalo Navarro, Diego Arroyelo)
- Gabriel Norambuena: Masters in Computer Science
- Adriana Concha: Masters in Computer Science
- Tomas Vallejos: Masters in Computer Science (co-supervised with Éric Tanter)
- Gabriel Chandía: Masters in Computer Science
- Pablo Torres: Masters in Computer Science
- Daniel Diomedi: Masters in Computer Science
- Marco Caballero: Masters in Computer Science
- Gabriel de la Parra: Masters in Computer Science
- Ignacio Cuevas: Masters in Computer Science
- Jhomara Luzuriaga: Masters in Computer Science
- Jaime Salas: Masters in Computer Science
- José Moreno: Masters in Computer Science
- Larry González: Masters in Computer Science
- Sebastián Ferrada: Masters in Computer Science (co-supervised with Benjamín Bustos)
- César Villalobos: Masters in Information Technology
- Matías Rivera: Engineer in Computer Science
- Álvaro Tobar: Engineer in Computer Science
- Kathleen Kohler: Engineer in Computer Science (co-supervised with Matíte Toro)
- Bárbara Castro: Engineer in Computer Science
- Ignacio Machuca: Engineer in Computer Science
- Marcelo Valenzuela: Engineer in Computer Science
- Samuel Sánchez: Engineer in Computer Science
- Felipe Morales: Engineer in Computer Science
- Diego Pizarro: Engineer in Computer Science
- Rodrigo Oportot: Engineer in Computer Science (co-supervised with Andés Abeliuk)
- Javiera Díaz: Engineer in Computer Science
- Matías López: Engineer in Computer Science (co-supervised with Sebastián Ferrada)
- Benjamín Correa: Engineer in Computer Science (co-supervised with Francisco Förster)
- Karen Medina: Engineer in Computer Science (co-supervised with Francisco Förster)
- Jorge Cerda: Engineer in Computer Science
- Cristóbal Torres: Engineer in Computer Science
- Benjamín del Pino: Engineer in Computer Science
- Francisca Suárez: Engineer in Computer Science
- José Berrocal: Engineer in Computer Science
- Alejandra Alarcón: Engineer in Computer Science (co-supervised with Francisco Förster)
- Francisco Lecaros: Engineer in Computer Science
- Raúl Cid: Engineer in Computer Science
- Tamara Novoa: Electrical Engineer
- Felipe Manen: Engineer in Computer Science
- Bastián Inostroza: Engineer in Computer Science
- Paolo Curotto: Engineer in Computer Science
- Miguel Zuñiga: Engineer in Computer Science
- Javier Carrasco: Engineer in Computer Science (co-supervised with Jorge Pérez)
- Paula Ríos: Engineer in Computer Science
- Francisco Pulgar: Engineer in Computer Science
- Gonzalo Tartari: Engineer in Computer Science
- Tomás Sáez: Engineer in Computer Science
- Moisés Hernández: Engineer in Computer Science (co-supervised with Juan D. Velásquez)
Self-promotion
Awards, distinctions, etc.
- Best Paper at Wikidata Workshop 2025 for "QAWiki: A Knowledge Graph Question Answering & SPARQL Query Generation Dataset for Wikidata"
- Best Demo Honorable Mention for SIGMOD 2024
- Distinguished PC Member for SIGMOD 2024, Research Track
- Outstanding Reviewer Award for ICDE 2024, Research Track
- Honourable Mention SPC for ISWC 2023, Research Track
- Awarded Best Reviewer for ESWC 2022, Research Track
- Awarded Best Reviewer for ESWC 2022, Resource Track
- Awarded Best PC Member for WWW 2021, Research Track
- Awarded Mejor Docente 2020, Universidad de Chile, for undergrad teaching (awarded to <1% of full-time profs each year)
- Awarded Best Reviewer for ESWC 2020, Research Track
- Honorable Reviewer Mention for ISWC 2019, Research Track
- Awarded Best Poster at ISWC 2017 for "Answering Visuo-Semantic Queries with IMGpedia", Ferrada et al.
- Awarded Best Reviewer for ISWC 2017 Resources Track
- Awarded Best Reviewer for ISWC 2017 Research Track
- Awarded Outstanding Reviewer for WebDB 2017
- Awarded Mejor Docente 2016, Universidad de Chile, for undergrad teaching (awarded to <1% of full-time profs each year)
- Awarded Profesor Destacado 2016, DCC, Universidad de Chile, for undergrad teaching
- Awarded Best Reviewer for ISWC 2016 Applications track
- Awarded Best Reviewer for ISWC 2016 Research track
- Awarded Outstanding Reviewer for WebDB 2016
- Nominated Best Paper at WWW 2015 for "Skolemising Blank Nodes while Preserving Isomorphism"
- Awarded Best Reviewer (Research Track) at ISWC 2013
- Awarded Best Evaluation Track Paper at ISWC 2013 for "SPARQL Web-Querying Infrastructure: Ready for Action?", Buil-Aranda et al.
- Awarded Best Poster at ESWC 2013 for "Exploring the Dynamics of Linked Data", Käfer et al.
- Awarded Best Reviewer at EKAW 2012
- Awarded Best Reviewer for SWJ 2011
- Nominated Best Paper & Best Student Paper at ISWC 2011 for "On Blank Nodes", Mallea et al.
- Nominated Best Student Paper at ISWC 2007 for "YARS2: A Federated Repository for Searching and Querying Graph Structured Data", Harth et al.
- Awarded IRCSET (Irish Government) PhD Scholarship
- Awarded NUI Galway Excellence Scholarship for undergrads
Awards, distinctions, etc. of students
- Hernán Vargas awarded Best Research Track Student Paper at ISWC 2019 for "RDF Explorer: A Visual SPARQL Query Builder", Vargas et al.
- Jaime Salas awarded Awarded Best Research Track Student Paper at ISWC 2018 for "Canonicalisation of monotone SPARQL queries ", Salas et al.
- Sebastián Ferrada awarded First Prize, 25th Latin American Contest of Master Thesis.
- Sebastián Ferrada awarded Best Resource Track Student Paper at ISWC 2017 for "IMGpedia: a Linked Dataset with Content-based Analysis of Wikimedia Images", Ferrada et al.
Contact
- aidhog@gmail.com