Getting to the CORE of Complex Event Recognition (Invited Talk)

Author Stijn Vansummeren

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Stijn Vansummeren
  • Data Science Institute, Applied Computer Science Laboratory, Hasselt University, Diepenbeek, Belgium


The research surveyed in this talk is joint work with Marco Bucchi, Alejandro Grez, Martín Ugarte, Andrés Quintana, and Cristian Riveros.

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Stijn Vansummeren. Getting to the CORE of Complex Event Recognition (Invited Talk). In 29th International Symposium on Temporal Representation and Reasoning (TIME 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 247, pp. 3:1-3:2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)


In this talk, I will give an overview of our recent work on complex event recognition.

Subject Classification

ACM Subject Classification
  • Information systems → Query languages for non-relational engines
  • Information systems → Stream management
  • Theory of computation → Formal languages and automata theory
  • Complex Event Recognition
  • automata
  • enumeration-based query processing


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  1. Marco Bucchi, Alejandro Grez, Andrés Quintana, Cristian Riveros, and Stijn Vansummeren. CORE: a complex event recognition engine. Proc. VLDB Endow., 15(9):1951-1964, 2022. URL:
  2. The CORE COmplex event Recognition Engine. URL:
  3. Alejandro Grez, Cristian Riveros, Martín Ugarte, and Stijn Vansummeren. On the expressiveness of languages for complex event recognition. In 23rd International Conference on Database Theory, ICDT 2020, March 30-April 2, 2020, Copenhagen, Denmark, volume 155 of LIPIcs, pages 15:1-15:17. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2020. URL:
  4. Alejandro Grez, Cristian Riveros, Martín Ugarte, and Stijn Vansummeren. A formal framework for complex event recognition. ACM Trans. Database Syst., 46(4):16:1-16:49, 2021. URL:
  5. Luc Segoufin. Enumerating with constant delay the answers to a query. In Joint 2013 EDBT/ICDT Conferences, ICDT '13 Proceedings, Genoa, Italy, March 18-22, 2013, pages 10-20. ACM, 2013. URL: