Semantic discovery architecture for dynamic environments of Web of Things

The huge number of Web of Things (WoT) services make their discovery a real challenge. One strategy to deal with this challenge is to reduce, as much as possible, the number of the discovered services using different mechanisms such as semantic Web-based clustering. However, most existing approaches are better suitable for static context and don't consider the dynamicity of services and gateways. Moreover, most of them are centralized approaches. In this paper we propose a distributed WoT services semantic discovery architecture. Our architecture leverages three services filtering mechanisms: clustering, indexing and ranking, which are semantic annotation-based. Also, this architecture takes into account both the dynamicity of WoT services through an incremental clustering algorithm, and the mobility of IoT gateways, through WoT gateways.