Approximate Semantic Matching of Heterogeneous Events Souleiman Hasan Sean O’Riain Edward Curry Digital Enterprise Research Digital Enterprise Research Digital Enterprise Research Institute (DERI) Institute (DERI) Institute (DERI) National University of Ireland, National University of Ireland, National University of Ireland, Galway Galway Galway
[email protected] [email protected] [email protected] ABSTRACT Event-based systems have loose coupling within space, time and 1. INTRODUCTION Event-based technology is becoming more widely needed with synchronization, providing a scalable infrastructure for the rise of new applications ranging from smart homes to smart information exchange and distributed workflows. However, cities and the Internet-of-Things [1]. Event-based systems enable event-based systems are tightly coupled, via event subscriptions a decoupled mode of interaction between participants making it and patterns, to the semantics of the underlying event schema and suitable for large scale distributed environments [10]. There are values. The high degree of semantic heterogeneity of events in estimates that by the end of 2020 fifty billion devices will be large and open deployments such as smart cities and the sensor connected to mobile networks [22] which would push event-based web makes it difficult to develop and maintain event-based technology to its limits. systems. In order to address semantic coupling within event-based systems, we propose vocabulary free subscriptions together with While event-based systems are decoupled in space, time, and the use of approximate semantic matching of events. This paper synchronization [10], scaling out to include participants from examines the requirement of event semantic decoupling and diverse domains poses a challenge with the semantic discusses approximate semantic event matching and the interpretation of events.