An Enhanced Framework for Semantic Web Service Discovery

摘要

The paper describes an ontology-based framework for semantic Web services description and discovery. The proposed framework relies on a lightweight and minimal description model allowing to describe services in terms of a set of functional and non-functional properties. Functional properties describe services capabilities in terms of Inputs, Outputs, Preconditions and Effects (IOPE). Non-functional properties describe services in terms of Quality of Service (QoS) properties. We propose an enhanced discovery approach in which Web services are discovered based on their functional and non functional properties. The enhanced discovery approach proposed is twofold. First, the approach relies on deductive relaxation of discovery queries based on semantic service descriptions and domain knowledge (domain ontology) to select a set of services that match a discovery query with different matching degrees. Second, non-fonctional properties are incorporated into the Web service discovery mechanism to generate a partially ordered list of services that meet user functional and non-functional requirements.