Contextualised Event-Triggered Reactivity With Similarity Search

Event-driven processing becomes ever important for appli- cations such as reactive context-aware mobility applications, attention- handling and pervasive collaboration systems etc. However today's reac- tive systems define complex events with rather precise specifications. In some applications, such as fraud or failure detection, identification of sim- ilar event patterns may be of tremendous use. These kind of applications need to identify not only critical situations but also situations which are similar enough to them. We present a novel approach for event-driven processing which is realized by combining reactive rules with ontologies. Ontologies are used to capture the context in which certain active behav- ior is appropriate (i.e., to discover situations in which particular reactive rules fire). Second, ontologies together with similarity search techniques are utilised to enable discovery of similar complex event patterns.