Ontologies: Principles, methods and applications. Uschold , M. This paper is intended to serve as a comprehensive introduction to the emerging field concerned with the design and use of ontologies. We show how the development and implementation of an explicit account of a shared understanding i. After motivating their need, we clarify just what ontologies are and what purposes they serve. We outline a methodology for developing and evaluating ontologies, first discussing informal techniques, concerning such issues as scoping, handling ambiguity, reaching agreement and producing definitions. We then consider the benefits of and describe, a more formal approach. We re-visit the scoping phase, and discuss the role of formal languages and techniques in the specification, implementation and evaluation of ontologies.
Graph-Based Semantic Web Service Composition for Healthcare Data Integration.
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awareness; Autonomic Workflow; Semantic Service Design. I. INTRODUCTION AND menting self-configuration of service compositions through the knowledge set of candidate Web Services (the service domain) in order to find a flow of to the system (manually or automatically via a matchmaking process), together.
Web services are becoming a significant part of Web applications in different fields such as e-commerce applications. Keywords : Web services, Web services modeling, Web services datatype descriptions, Extensible markup language schema datatypes, Web services description language, Understandability. Web services is a new paradigm for building distributed application based on distributed heterogeneous services.
The future Internet will be based on services, and this new trend will have a significant impact on domains such as e-commerce . E-commerce firms are turning to Web services to streamline operations and solve the interoperability problem. Web services frees system developers to concentrate on enabling their business and their customers rather than deal with interoperability headaches by writing glue code and patching systems together . Many solutions had been proposed to the Web services understandability problem.
One of the solutions is based on modeling the information inside a WSDL interface to convert it to a more understandable form. None of the model based solutions to the understandability problem in the literature considered modeling Web services datatype descriptions inside WSDL. Service providers and requesters in this research are defined in Section 2.
A Framework for Dynamic Web Services Composition
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Semantic Web Service Composition through a Matchmaking of Domain of the key elements for the automated composition of Web services is semantics i.e.
The current solutions in functional web services composition lack autonomous queries of semantic matches within the parameters of web services, which are necessary in the composition of large-scale related services. In this paper, we propose a graph-based Semantic Web Services composition system consisting of two subsystems: management time and run time. The management-time subsystem is responsible for dependency graph preparation in which a dependency graph of related services is generated automatically according to the proposed semantic matchmaking rules.
The run-time subsystem is responsible for discovering the potential web services and nonredundant web services composition of a user’s query using a graph-based searching algorithm. The proposed approach was applied to healthcare data integration in different health organizations and was evaluated according to two aspects: execution time measurement and correctness measurement.
Web services WS composition is a method used to combine existing WS from heterogeneous systems to build more complicated business processes that match with user requirements.
A Semantic Web Services Architecture
This document is based on a review of requirements gathered from a number of different environments to identify the scope and potential requirements for this Semantic Web Services architecture. SWSI started in the autumn of based on common interest of the researchers involved. This document describes abstract protocols for interactions between clients and Semantic Web Services and proposes other support services that may be needed in some contexts to fulfill the basic requirements of the proposed architecture.
Semantic Web services descriptions relay on Web services annotations with During the Web Services matchmaking process in LARKS, the comparison of the units used to express the values of the Inputs/Outputs in the domain ontology.
Automated composition of Web services or the process of forming new value added Web services is one of the most promising challenges in the semantic Web service research area. Semantics is one of the key elements for the automated composition of Web services because such a process requires rich machine-understandable descriptions of services that can be shared. Semantics enables Web service to describe their capabilities and processes, nevertheless there is still some work to be done.
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Study of MDA Based Semantic Web Service Composition
Metrics details. The complexity and inter-related nature of biological data poses a difficult challenge for data and tool integration. There has been a proliferation of interoperability standards and projects over the past decade, none of which has been widely adopted by the bioinformatics community. Recent attempts have focused on the use of semantics to assist integration, and Semantic Web technologies are being welcomed by this community.
Web services composition. In this paper composition, discovery and matchmaking are being Semantic CBR modelling applied to Web services. In section 4 we discuss the design of our functional and non-functional domain specific Web.
Based on semantic matching degree, the matching methods are used to select a subset of the available web services and then the most suitable composite web services is identified. The verified UML models are stored as templates in the knowledge base of ontology for reuse. Present method not only improves the development efficiency of the semantic web , but, also ensures the correctness of the composition process.
The value of web services is the service reuse. Furthermore, the service composition is the sublimation of the service reuse. The key for effective service composition is the service modeling and the corresponding matching algorithm. Modeling web services composition is a complicated and error-prone process.
Interoperability in eGovernment through Cross-Ontology Semantic Web Service Composition
The current solutions in functional web services composition lack autonomous queries of semantic matches within the parameters of web services, which are necessary in the composition of large-scale related services. In this paper, we propose a graph-based Semantic Web Services composition system consisting of two subsystems: management time and run time.
services in a home changing environment. Furthermore, our goal is to offer a partial automation of web service composition, with a human controller.
The Call for Participation covered the background and goals of the workshop, and explained that attendance was limited and position papers were required. A total of 53 papers were accepted by the program committee and a subset was selected for presentation. In order to meet the workshop goals, in particular reviewing use cases and existing research efforts, finding key domain concepts and essential problems to address eventually solutions , the program was divided in 4 sessions: domain boundaries and definition, use cases, framework technologies, and concluding discussion.
The goal of the first session was to understand the challenges in Frameworks for Semantics in Web services. Semantics in Web services focus on how to describe and wrap conventional services that communicate in XML Payne. The needs of different kinds of users give rise to different sets of requirements. There is a need for simple abstractions for the “programmer on the street” Halpin , hiding ontological detail but providing support for integrating Web services into programming languages.
Achieving Web Services Composition – a Survey
This chapter elaborates the motivation for the thesis. It gives an insight into the relation between the domain of electronic government eGovernment and Semantic Web research. It outlines the interoperability challenges in eGovernment process integration and domain speci c conditions, which encourage the application of Semantic Web concepts. Furthermore, the goals of this thesis are explained and the scope of this work is clari ed.
Finally, an outline of the thesis is given in the last section.
paper proposes an agent-based approach for matchmaking that is based on capturing the semantics of services and requests formally through temporal logic.
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