2015/02/17 by Anastasios Skarlatidis, Γεώργιος Παλιούρας, Alexander Artikis +1 · 1 citation
Computer Science · #Semantic Web and Ontologies #Logic, Reasoning, and Knowledge #Bayesian Modeling and Causal Inference
paper · doi:10.1145/2699916
openalex publication_date 2015/02/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
Symbolic event recognition systems have been successfully applied to a variety of application domains, extracting useful information in the form of events, allowing experts or other systems to monitor and respond when significant events are recognised. In a typical event recognition application, however, these systems often have to deal with a significant amount of uncertainty. In this article, we address the issue of uncertainty in logic-based event recognition by extending the Event Calculus with probabilistic reasoning. Markov logic networks are a natural candidate for our logic-based formalism. However, the temporal semantics of the Event Calculus introduce a number of challenges for the proposed model. We show how and under what assumptions we can overcome these problems. Additionally, we study how probabilistic modelling changes the behaviour of the formalism, affecting its key property—the inertia of fluents. Furthermore, we demonstrate the advantages of the probabilistic Event Calculus through examples and experiments in the domain of activity recognition, using a publicly available dataset for video surveillance.