118 citations · 202 across the 19 of their papers we have counts for
11 papers · 1 filter
Online Learning Probabilistic Event Calculus Theories in Answer Set Programming
Nikos Katzouris, Alexander Artikis, Georgios Paliouras
Complex Event Recognition (CER) systems detect event occurrences in streaming time-stamped input using predefined event patterns. Logic-based approaches are of special interest in…
Online Event Recognition from Moving Vehicles: Application Paper
Efthimis Tsilionis, Nikolaos Koutroumanis, Panagiotis Nikitopoulos +2
We present a system for online composite event recognition over streaming positions of commercial vehicles. Our system employs a data enrichment module, augmenting the mobility dat…
Composite Event Recognition for Maritime Monitoring
Manolis Pitsikalis, Alexander Artikis, Richard Dreo +3
Maritime monitoring systems support safe shipping as they allow for the real-time detection of dangerous, suspicious and illegal vessel activities. We present such a system using t…
Wayeb: a Tool for Complex Event Forecasting
Elias Alevizos, Alexander Artikis, Georgios Paliouras
Complex Event Processing (CEP) systems have appeared in abundance during the last two decades. Their purpose is to detect in real-time interesting patterns upon a stream of events…
Semi-Supervised Online Structure Learning for Composite Event Recognition
Evangelos Michelioudakis, Alexander Artikis, Georgios Paliouras
Online structure learning approaches, such as those stemming from Statistical Relational Learning, enable the discovery of complex relations in noisy data streams. However, these m…
The Complex Event Recognition Group
Elias Alevizos, Alexander Artikis, Nikos Katzouris +2
The Complex Event Recognition (CER) group is a research team, affiliated with the National Centre of Scientific Research "Demokritos" in Greece. The CER group works towards advance…
Distributed Online Learning of Event Definitions
Nikos Katzouris, Alexander Artikis, Georgios Paliouras
Logic-based event recognition systems infer occurrences of events in time using a set of event definitions in the form of first-order rules. The Event Calculus is a temporal logic…
An Integrated and Scalable Platform for Proactive Event-Driven Traffic Management
Alain Kibangou, Alexander Artikis, Evangelos Michelioudakis +7
Traffic on freeways can be managed by means of ramp meters from Road Traffic Control rooms. Human operators cannot efficiently manage a network of ramp meters. To support them, we…
Reactive Reasoning with the Event Calculus
Alexander Artikis, Marek Sergot, Georgios Paliouras
Systems for symbolic event recognition accept as input a stream of time-stamped events from sensors and other computational devices, and seek to identify high-level composite event…
Probabilistic Event Calculus for Event Recognition
Anastasios Skarlatidis, Georgios Paliouras, Alexander Artikis +1
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 othe…
A Logic Programming Approach to Activity Recognition
A. Artikis, M. Sergot, G. Paliouras
We have been developing a system for recognising human activity given a symbolic representation of video content. The input of our system is a set of time-stamped short-term activi…