Survey of Semantic Extensions to UDDI: Implications for Sensor Services

−The ability for software agents to discover, query, and task ubiquitous sensors requires machineinterpretable service descriptions, such as those proposed by the Semantic Web effort. Descriptions that support deep semantics will enable on-the-fly utilization of sensors for applications that might not have been anticipated on initial deployment. Semantic Web service discovery and dynamic composition requires formal semantic descriptions of inputs, outputs, preconditions, and effects of services. Universal Description Discovery and Integration (UDDI) provides a registry for publication and discovery of Web services, but it lacks the semantics needed for discovery and interoperation as envisioned by the Semantic Web community due to UDDI’s syntax-based search. This paper surveys representative approaches for incorporating semantic capabilities within the existing UDDI infrastructure and then proposes an architecture for sensor services within an ontology-based networkcentric environment.