Paper 114 (In-Use track)

Shaping Device Descriptions to Achieve IoT Semantic Interoperability

Author(s): Aparna Saisree Thuluva, Darko Anicic, Sebastian Rudolph

Abstract: The Internet of Things (IoT) promises easy integration of
connected physical devices at a large scale. For this purpose use of seman-
tic technologies are widely acknowledged, as they enable devices to un-
derstand the meaning of data instead of merely exchanging it. W3CWoT
Working Group is standardizing Thing Description (TD) as a machine-
readable interface of a thing. Further on, iot.schema.org species seman-
tics for capabilities of things. Using these models it is possible to describe
devices. However, they do not constrain semantics of IoT devices. For
example, iot.schema.org provides one capability for a class of devices.
Often same-class devices, produced by dierent manufacturers, dier in
certain feature or data they oer. In order to represent device variants we
propose to extend iot.schema.org Capabilities with RDF Shapes. In our
approach, TDs for device variants are automatically generated. It also
enhances thing discovery, semantic interoperability, validation of TDs,
and accelerates IoT application development.

Keywords: Internet of Things; Web of Things; iot.schema.org; RDF Shape Languages; Shape Expressions (ShEx); W3C Web of Things Thing Description; Semantic Discovery; Semantic Interoperability

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