Research An Development For Web Services Discovery Based On Semantics

Web Services Discovery allows service requesters to find out desired services from different web services provided by service providers. The main purpose of the research on Web Services Discovery is to increase the search efficiency (such as recall ratio and precision ratio) and to realize the discovery automation. Currently, Web Services Discovery is based on UDDI and WSDL. However, the shortcoming of UDDI technology is its low precision ratio and low recall ratio as the result of using the keyword-based discovery methodIn order to improve the working efficiency of clients, this paper designs and develops a platform named Web Services Platform, which can help customers to find the most suitable/proper web services according to the research and experiment results. Based on the OWL-S criterion, we study the discovery mechanism of web services, which extends semantic information in UDDI.At present, the most of domain ontologies are defined by service providers,and service requestors search services by using one domain ontology arbitrarily, both of which result in the question of semantic ambiguity. This paper presents a service finding model with unambiguous semantics. This model provides a semantic description on web services using OWL-S and does some pretreatments on concepts referred to domain ontology. The model constructs a global ontology based on term semantic, which can avoid inconsistency in understanding concepts and make the obtained global ontology extended easily.