A logic-based calculus of events
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Verification of Choreographies During Execution Using the Reactive Event Calculus
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Commitment tracking via the reactive event calculus
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DALT'09 Proceedings of the 7th international conference on Declarative Agent Languages and Technologies
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DALT'11 Proceedings of the 9th international conference on Declarative Agent Languages and Technologies
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Representing and monitoring social commitments using the event calculus
Autonomous Agents and Multi-Agent Systems
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Proceedings of the 28th Annual ACM Symposium on Applied Computing
Monitoring business constraints with the event calculus
ACM Transactions on Intelligent Systems and Technology (TIST) - Special Section on Intelligent Mobile Knowledge Discovery and Management Systems and Special Issue on Social Web Mining
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In 1986 Kowalski and Sergot proposed a logic-based formalism named Event Calculus (EC), for specifying in a declarative manner how the happening of events affects some representation (the state ) of the world. Since its introduction, EC has been recognized for being an excellent framework to reason about time and events. Recently, with the advent of complex software systems decomposed into sets of autonomous, heterogeneous distributed entities, EC has drawn attention as a viable solution for monitoring them, where monitoring means to represent their state and how events dynamically affect such state. In this work we present the fundamentals of a reactive and logic-based version of EC, named REC, for monitoring declarative properties, while maintaining a solid formal background. We present some results about its formal as well as practical aspects, and discuss how REC has been applied to a variety of application domains, namely BPM, SOC, CGs and MAS. We also highlight some key issues required by the monitoring task, and finally discuss how REC overcomes such issues.