Center for Semantic Web Research

About

Since its creation, the Web has been a main object of research for information management, which has been primarily studied using classical paradigms. However, since the early 2000s, we are witnessing drastic changes in the area of Web data management. If we had to summarize them in one sentence, it would be: real distribution of big data.


In this new scenario, capturing the meaning of heterogeneous data and developing tools for its processing play a crucial role. The Semantic Web is an enormous initiative led by the World Wide Web Consortium whose main objective is to achieve these goals, thus transforming the current Web of documents into a Web of data, where human users and computer applications can take a better advantage of the massive amount of information stored on it. Some key steps have been made to achieve these goals. However, we are still far from having techniques that take full advantage of the semantics and the logic behind Web data, once its structure, scale and distribution –altogether– are considered as a full-fledged phenomenon.


The main goal of the Center for Semantic Web Research is to study how to effectively extract semantic data from the Web, and to develop the basic tools for such effective extraction. This is an initiative that brings together professors, researchers and students from Pontifical Catholic University of Chile, University of Chile and University of Talca, and which is funded by the Iniciativa Científica Milenio.

People

Marcelo Arenas

Marcelo Arenas

Director

Pablo  Barceló

Pablo Barceló

Deputy Director

Renzo Angles

Renzo Angles

Young researcher

Jorge Baier

Jorge Baier

Young Researcher

Carlos Buil-Aranda

Carlos Buil-Aranda

Young researcher

Benjamin Bustos

Benjamin Bustos

Young Researcher

Claudio Gutierrez

Claudio Gutierrez

Senior Researcher

Aidan Hogan

Aidan Hogan

Associate researcher

Jorge Pérez

Jorge Pérez

Associate researcher

Bárbara Poblete

Bárbara Poblete

Young researcher

Juan L. Reutter

Juan L. Reutter

Associate researcher

Cristian Riveros

Cristian Riveros

Young researcher

Domagoj Vrgoc

Domagoj Vrgoc

Postdoctoral researcher

Gabriel Diéguez

Gabriel Diéguez

Master's student

Jazmine Maldonado

Jazmine Maldonado

Undergraduate Student

Pablo Muñoz

Pablo Muñoz

PhD student

Vanessa Peña

Vanessa Peña

PHD Student

Mauricio Quezada

Mauricio Quezada

PHD Student

Miguel Romero

Miguel Romero

PhD student

Adrián Soto

Adrián Soto

Undegraduate student

Fernando Suárez

Fernando Suárez

Master's student

Olaf Hartig

Olaf Hartig

Postdoctoral research fellow at the Cheriton School of Computer Science at the University of Waterloo

Seminar

Publications

  • Marcelo Arenas and Gonzalo I. Díaz . The Exact Complexity of the First-Order Logic Definability Problem. ACM Transactions on Database Systems 41(2), article 13, 2016. [PDF]
  • Marcelo Arenas, Bernardo Cuenca Grau, Evgeny Kharlamov, Sarunas Marciuska and Dmitriy Zheleznyakov. Faceted Search over RDF-Based Knowledge Graphs. Journal of Web Semantics 37–38:55–74, 2016. [PDF]
  • Pablo Barcelo and Leonid Libkin. Order-Invariant Types and Their Applications. Logical Methods in Computer Science (LMCS), 12(1):9, 2016. [PDF]
  • Pablo Barcelo, Miguel Romero and Moshe Vardi. Semantic acyclicity on graph databases. SIAM Journal on Computing (SICOMP), 45(4), pages 1339-1376, 2016, 2016. [PDF]
  • Pierre Bourhis, Gabriele Puppis, Cristian Riveros and Slawek Staworko. Bounded Repairability for Regular Tree Languages. To appear in ACM Transactions on Database Systems (TODS)., 2016.
  • 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, (accepted), 2016. [PDF]
  • Aidan Hogan, Pascal Hitzler, Krzysztof Janowicz. Linked Dataset Description Papers at the Semantic Web Journal: A Critical Assessment. In the Semantic Web Journal 7(2): 105–116 (editorial), 2016. [PDF]
  • Leonid Libkin, Wim Martens and Domagoj Vrgoč. Querying Graph Databases. Journal of the ACM, 63(2), 2016.
  • Egor V. Kostylev, Juan L. Reutter and Domagoj Vrgoč. Static analysis of navigational XPath over graph databases. Information Proccesing Letters, 116(7): 467-474, 2016.
  • Pierre-Yves Vandenbussche, Jürgen Umbrich, Luca Matteis, Aidan Hogan, Carlos Buil-Aranda. SPARQLES: Monitoring Public SPARQL Endpoint. In the Semantic Web Journal, (accepted), 2016. [PDF]
  • Sergio Abriola, Pablo Barcelo, Diego Figueira, and Santiago Figueira. Bisimulations on data graphs. Accepted for publication in 15th International Conference on Principles of Knowledge Representation and Reasoning (KR 2016), 2016. [PDF]
  • Marcelo Arenas, Francisco Maturana, Cristian Riveros and Domagoj Vrogc. A framework for annotating CSV-like data. To appear in 42st International Conference on Very Large Data Bases (VLDB 2016), New Delhi, India., 2016.
  • Pablo Barcelo, Georg Gottlob, and Andreas Pieris. Semantic acyclicity under constraints. In Proceedings 35th ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems (PODS 2016), pages 343-354, 2016. [PDF]
  • Anthony Widjaja Lin and Pablo Barcelo. String solving with word equations and transducers: Towards a logic for analysing mutation XSS. In Proceedings of the 42nd Annual ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages (POPL 2015), pages 123-136, St. Petersburg, Florida, USA, 2016. [PDF]
  • Filip Mazowiecki and Cristian Riveros. Copyless Cost-Register Automata: Structure, Expressiveness, and Closure Properties . 33rd Symposium on Theoretical Aspects of Computer Science (STACS 2016), 53:1-53:13, Orléans, France., 2016.
  • Felipe Pezoa, Juan L. Reutter, Fernando Suárez, Martín Ugarte and Domagoj Vrgoc. Foundations of JSON Schema. In Proceedings of the 25th International Conference on World Wide Web Pages 263-273., 2016. [PDF]
  • Marcelo Arenas, Gabriel Diéguez and Jorge Pérez. Bidirectional Constraints for Exchanging Data: Beyond Monotone Queries. In Proceedings of the Twenty-Fourth International Joint Conference on Artificial Intelligence (IJCAI 2015), pages 2698-2705, Buenos Aires, Argentina, 2015. [PDF]
  • Pablo Barcelo and Gaelle Fontaine. On the data complexity of consistent query answering over graph databases. In Proceedings of the 18th International Conference on Database Theory (ICDT 2015), pages 380-397, Brussels, Belgium, 2015. [PDF]
  • Pablo Barcelo, Reinhard Pichler and Sebastian Skritek. Efficient Evaluation and Approximation of Well-designed Pattern Trees. In Proceedings 34th ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems (PODS 2015), pages 131-144, 2015, 2015. [PDF]
  • Aidan Hogan. Skolemising Blank Nodes while Preserving Isomorphism. 24th International World Wide Web Conference (WWW 2015), pages 430–440, Florence, Italy., 2015. [PDF]
  • Aidan Hogan. Linked Data and the Semantic Web Standards. Chapter in 'Linked Data Management', Andreas Harth, Katja Hose, Ralf Schenkel (eds.), CRC Press, May, 2014. [PDF]
  • Renzo Angles and Claudio Gutierrez. Negation in SPARQL. 10th Alberto Mendelzon Workshop (AMW) on Foundations of Data Management, Panama City, Panama, June 6–10, 2016.
  • Sebastián Ferrada, Benjamin Bustos and Aidan Hogan. IMGpedia: Enriching the Web of Data with Image Content Analysis. 10th Alberto Mendelzon Workshop (AMW) on Foundations of Data Management, Panama City, Panama, June 6–10, 2016. [PDF]
  • Claudio Gutierrez, Daniel Hernández, Aidan Hogan and Axel Polleres. Certain Answers for SPARQL? 10th Alberto Mendelzon Workshop (AMW) on Foundations of Data Management, Panama City, Panama, June 6–10, 2016. [PDF]
  • Benjamin Bustos and Aidan Hogan. IMGpedia: A Proposal to Enrich DBpedia with Image Meta-Data. 9th Alberto Mendelzon International Workshop on Foundations of Data Management, Lima, Peru, May 6–8, 2015. [PDF]
  • Afzal Godil, Helin Dutagaci, Benjamin Bustos, S. Choi, Suchuan Dong, Takahiko Furuya, H. Li, Norman Link, A. Moriyama, Rafael Meruane, Ryutarou Ohbuchi, Dietrich Paulus, Tobias Schreck, Viktor Seib, Ivan Sipiran, H. Yin, and C. Zhang. Range scans based 3D shape retrieval. In Proc. 8th Eurographics Workshop on 3D Object Retrieval (3DOR'15), pages 153-160. Eurographics Association, 2015., 2015.
  • Robert Gregor, Andreas Lamprecht, Ivan Sipiran, Tobias Schreck, and Benjamin Bustos. Empirical evaluation of dissimilarity measures for 3D object retrieval with application to multi-feature retrieval. In Proc. 13th International Workshop on Content-Based Multimedia Indexing (CBMI'15), pages 1-6. IEEE, 2015., 2015.
  • Daniel Hernández, Aidan Hogan and Markus Krötzsch. Reifying RDF: What Works Well With Wikidata?, International Workshop on Scalable Semantic Web Knowledge Base Systems (SSWS), Bethlehem, US, Oct 11, 2015. [PDF]
  • Jose Herrera, Denis Parra and Barbara Poblete. Retrieving Relevant Conversations for Q&A on Twitter. SIGIR 2015 International Workshop on Social Personalisation & Search. , 2015. [PDF]
  • Jazmine Maldonado, Vanessa Peña-Araya and Barbara Poblete. Spatio and Temporal Characterization of Chilean News Events in Social Media. SIGIR 2015 Workshop on Temporal, Social and Spatially-aware Information Access (TAIA'15), August 13, 2015, Santiago, Chile., 2015. [PDF]
  • Luca Matteis, Aidan Hogan and Roberto Navigli. Keyword-Based Navigation and Search over the Linked Data Web. Linked Data on the Web Workshop (LDOW 2015) at WWW 2015, Florence, Italy, May 19, 2015. [PDF]
  • Aidan Hogan. Reasoning Techniques for the Web of Data. Volume 19 of "Studies on the Semantic Web", IOS Press, pp. 1–330, ISBN:978-1-61499-382-7, May, 2014.

Awards

News

Outreach

Contact

Mailing address

Marcelo Arenas
Vicuna Mackenna 4860
Edificio San Agustin, 4to piso
Macul 7820436
Santiago
Chile