In this paper we describe how we handle heterogeneity in web service interaction through a choreography mechanism that we have developed for IRS-III. IRS-III is a framework and platform for developing semantic web services which utilizes the WSMO ontology. The overall design of our choreography framework is based on: the use of ontologies and state, IRS-III playing the role of a broker, differe...

In this paper we describe IRS-III which takes a semantic broker based approach to creating applications from Semantic Web Services by mediating between a service requester and one or more service providers. Business organisations can view Semantic Web Services as the basic mechanism for integrating data and processes across applications on the Web. This paper extends previous publications on IR...

objects, characterized by a signature, comprised of universes, functions, and relations. The universe or domain is a set of data containing partial functions and predicates (attributes and relations) which encapsulate the universe. Transition rules, in ASMs, are local functions which update the abstract states, and can be expressed as follows: f(t1, t2, ..., tn):= t where f is an n-ary function...

In this paper we describe our ongoing work in developing a choreography for IRS-III. IRS-III is a framework and platform for developing WSMO based semantic web services. Our choreography framework is based on the KADS system-user co-operation model and distinguishes between the direction of messages within a conversation and which actor has the initiative. The implementation of the framework is...

Web services are currently one of the trends in the digital economy as means to support business interoperation and collaborative processes. Semantic Web Services facilitate activities including automatic discovery and composition of Web Services. Research initiatives such as WSMO have been developing specifications for this technology. However, a model for describing all aspects of service com...

rhabdomyosarcoma (rms) is the most frequent soft tissue sarcoma in children. the aim of study was to retrospectively review the treatment results of childhood rhabdomyosarcoma and identify prognostic factors. 60 children with rhabdomyosarcoma treated between 1996 and 2002 in shafa hospital were reviewed. the data were analyzed for clinico-epidemiological factors. age, gender, race, histology ty...