Dynamic Web service composition is a process of building a new value added service using available services to satisfy the requester’s complex functional need. In this paper we propose the broker based architecture for dynamic Web service composition. The broker plays a major role in effective and efficient discovery of Web services for the individual tasks of the complex need. The broker maint...

GeoData Web service is an important way to achieve the integration and sharing of heterogeneous geospatial data at present. However, due to the complexity of GeoData and no sematic supporting Webservice discovery, it is very hard for data users to accurately find the GeoData WebService they really want. In order to make it easy for users to quickly and accurately find the GeoData Web Service th...

Service discovery is a critical aspect in the Service Oriented Computing approach. A model, a methodology and a tool environment based on ontologies are proposed in this paper. The requester and provider perspectives are discussed, both to support the service publication phase and the search phase. The proposed service ontology is based on functional aspects and it is organized on three layers,...

Web Services has emerged as a dominant paradigm for constructing and composing distributed business applications and enabling enterprise-wide interoperability. A critical factor to the overall utility of web services is a scalable, flexible and robust discover mechanism. This paper improves UDDI specification, thus it could guarantee usability of response and append grid-like monitoring informa...

Extensive effort has been brought forth to assist in web service discovery. In particular, classic Information Retrieval techniques are exploited to assess the similarity between two web services descriptions, while Semantic Web technologies are proposed to enhance semantic service descriptions. These approaches have greatly improved the quality and accuracy of service discovery. However, these...

Semantic descriptions provide more accurate information related to operations supported by Web services, enabling their dynamic discovery and execution without human intervention. Furthermore, semantic descriptions allow Web services to be automatically combined by using discovery mechanisms able to identify composed services. These compositions can also be described and published as if they we...

The boom of Service oriented architecture is on substantial rise. SOA developers orchestrate individual SOA objects into web services. It has been a dream of software engineers to promote and innovate the concept of software reusability. Providing and using services dynamically over web is increasingly becoming times demand towards promoting software reuse in real sense. Probably the most impor...

Semantic Web service discovery finds a match between the service requirement and service advertisements based on the semantic descriptions. The matchmaking mechanism might find semantically similar Web services having same matching score. In this paper, the authors propose the semantic Web service selection mechanism which distinguishes semantically similar Web services based on the Quality of ...

Nowadays Web Services are turning out to be more prevalent and permitting organizations to utilize the web as a business opportunity for offering their own services and using existing services from others. A Web service is a self-describing software component which is universally accessed by means of standard protocols. A web service registry UDDI provides interoperable, standards based approac...