Practical semantics for the Internet of Things: Physical states, device mashups, and open questions

摘要: The Internet of Things (IoT) envisions cross-domain applications that combine digital services with provided by resource-constrained embedded devices connect to the physical world. Such smart environments can comprise a large number from various different vendors. This requires high degree decoupling and neither nor user agents rely on priori knowledge service APIs. Semantic descriptions are applicable heterogeneous application domains due their level abstraction enable automatic composition. paper shows how RESTdesc description format semantic reasoning be applied create Web-like mashups in environments. Our approach supports highly dynamic IoT where become unavailable device mobility, limited energy, or network disruptions. concepts backed concrete system architecture whose implementation is publicly available. It used evaluate semantics-based realistic IoT-related scenario. results show current reasoners able produce medium-sized mashups, but struggle state space explosion when states part proofing process.