Location Date ADOS (AIRTRACE DECENTRALIZED ORACLE SYSTEM) An advanced AI-based oracle system for securing off-chain IoT data integrity when injecting in the blockchain OntoChain Summit 22 Berlin, 2 June ® ANY IOT SENSOR, BLOCKCHAIN-ENABLED
of anomalies Point: irregularity that happens randomly and may have no particular reason. Contextual: abnormal behavior happening within some specific context. Collective: a collection of individual data points showing anomalies.
ANOMALY DETECTION, TIMELY ALERTING, AND DATA- QUALITY SCORING, BEFORE INJECTING INTO THE BLOCKCHAIN ADOS - GNN Deng, A., & Hooi, B. (2021, February). Graph neural network-based anomaly detection in multivariate time series. In Proceedings of the AAAI Conference on Artificial Intelligence (Vol. 35, No. 5, pp. 4027-4035).
Water quality sensors: in water treatment plants, it is possible to find several sensors measuring water levels, water quality, valve status, flow rates, etc. Data measured by these IoT sensors can be related in complex, nonlinear ways. Acoustic sensors: in smart cities, acoustic changes can reveal changes in car traffic, weather conditions, etc.. Acoustic sensors are used to monitor the sound pressure level (noise pollution) of the city. Transportation sector: to understand the existing dynamics arising in scenarios of car traffic in order to understand how vehicular mobility of several vehicles can affect each other .
Language AOM (ADOS Ontology Model) Regulates data for anomaly detection models to work properly (e.g. model version, TEE needed, etc.) Machine Learning model specification New WoT SSN Sensors and their observations, the involved procedures, and the observed properties. Systems (sensors and actuators) Reused WoT WGS84 Represents geocoordinates (latitude and longitude), with class geo:point and properties geo:latitude, geo:longitude, geo:altitude. Geolocation (outdoors) Reused WoT DUL By combining WSG84 properties with dul:hasLocation from DUL ontology we can represent the sensor location indoors Geolocation (indoors) Reused WoT FIEMSER Represents the way to communicate with the IoT devices, including, at least, communication protocol and its version. Communications Reused WoT QUDT Represents a comprehensive list of quantities, units and dimensions to define IoT readings formats. Observations Reused WoT FOAF Information about IoT vendor and version of the device Vendor, version and deployment time Reused WoT