Towards Context-Aware Cyber-Physical Systems

In this paper, we provide a brief discussion on using context as a new class of information that can be used to aid estimation/detection approaches to ensuring the safety and security of modern CPS. These systems typically have access to multiple information sources that cannot be directly related to the system state (e.g., mapping oxygen saturation measurements to the overall blood oxygen content is challenging). At the same time, this information is correlated with the system's state (e.g., if the saturation is below a certain threshold, then so is the overall oxygen content). Thus, if formalized properly, context can be used in a way similar to standard measurements.