A Schematic Approach for Dynamic Web Service Composition Using Web Ontology Language

Abstract—The Composition of existing web services to deliver a new functionality is an important requirement in many business domains. Service composition extends the notion of service discovery by enabling composition of existing web services to meet the requirements of a given high‐level task description. The proposed work focuses on developing an ontology‐based dynamic web service composition approach that uses Web Ontology Language (OWL) to register, query and dynamically invoke composed web services. The composition logic is defined using workflow constructs that supports reasoning at runtime. The invocation of a composed web service is done using a simple application where a service client discovers and invokes a composed web service at runtime. The service invocation procedure involves resolving the components of the composed web service, querying using the semantic description of the components, selecting the best matched web service for each component, and executing the composed web service according to the composition logic. The approach used for publication, discovery and composition of semantic web services is METEOR-S(Managing End-To-End OpeRations for Semantic Web Services). Keywords—service composition, service discovery, web ontology language, semantic web services