PhD thesis defense: Towards Interoperable IoT Systems with a Constraint-Aware Semantic Web of Things

**Thesis summary** *Context*: This thesis is situated in the **Semantic Web of things** (SWoT) domain, at the interface between the **Internet of Things** (IoT) and the **Semantic Web** (SW). The integration of SW approaches into the IoT aims to tackle the important **heterogeneity** of resources, technologies and applications in the IoT, which creates **interoperability issues** hindering the deployment of IoT systems. *Challenges*: A first scientific challenge is risen by the **resource consumption** of the SW technologies, unfit for the limited computation and communication capabilities of IoT devices. Moreover, IoT networks are deployed at a **large scale**, while SW technologies have scalability issues. This thesis addresses this double challenge and proposes two related contributions. *Contributions*: The first contribution is the identification of quality requirements for **IoT ontologies**, leading to the elaboration of **IoT-O, a modular IoT ontology**. IoT-O is deployed