Semantic web services: from modeling to composition / Serviços Web Semânticos: da modelagem à composição

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The automation of the discovery, composition and invocation of Web Services is an important step to the success of the Semantic Web. If no single Web Service satisfies the functionality required by one user, an alternative is to combine existing services that solve parts of the problem in order to reach a complete solution. Web Services composition can be achieved manually or automatically. When composing services manually, Web Service developers can take advantage of their expertise and knowledge about the composition services and the target service. This thesis addresses issues and presents contributions related to the process of automating Web Services composition. The automatic composition of Web services requires the description and publication of the services in order to model the necessary knowledge (explicit semantics) that the developer uses to perform the manual composition. The automatic Web Service discovery is a crucial step toward the automatic composition, because it is a previous stage necessary to the selection of composition service candidates. Semantic Web Services researches explore the use of the Semantic Web technologies to enrich the Web Services descriptions with explicit semantics. Three main lines of investigation are adopted in this thesis to explore the process of automatic composition of Web Services. They are the following: Semantic Web Services modeling; automatic discovery of Semantic Web Services; and automatic composition of Semantic Web Services. The main contributions of this thesis include: the RALOWS platform for modeling Web applications as Semantic Web Services; an algorithm for the automatic discovery of Semantic Web Services; a graph-based approach to the automatic composition of Semantic Web Services; and an infrastructure and tools to support the Semantic Web Services description, publishing, discovery and composition

ASSUNTO(S)

semantic web publishing semantic web services discovery serviços web semânticos ontology serviço web publicação ontologia semantic web services descoberta semântica composição web semântica composition

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