Semantics based web service substitutability and workflow composition

Web services are gaining lot of importance in the industry. Business processes are followed in all the industries to carry out routine tasks. Web service plays a vital role in the creation of dynamic flexible business processes. Although web services provide essential features for creating business processes, it is difficult to discover them without the use of semantic information. The problem with using these web services is their interface description is purely syntactic. We add semantics to web services using Universal Service-Semantics Description Language. USDL is based on the Web Ontology Language (OWL) and employs WordNet as a common basis for understanding the meaning of services. We design and implement the web service substitutability parsing these USDL interface description and extracting the semantic information in terms of USDL concepts. We retrieve ontology from WordNet database using USDL concepts and propose a theory to match two semantic USDL concepts. Based on these USDL concepts we match web services. We propose how these semantics can be used with new RESTful web services architecture. We also propose Universal Semantic Description, Discovery and Integration repository for semantic web services merging their syntactic and semantic interface descriptions.