Web Services Discovery and QoS-Aware Extension

Web Services Discovery and QoS-Aware Extension

Chen Chen Zhou (Nanyang Technological University, Singapore), Liang-Tien Chia (Nanyang Technological University, Singapore) and Bu-Sung Lee (Nanyang Technological University, Singapore)
DOI: 10.4018/978-1-59904-192-6.ch008
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Abstract

Web services are self-contained, self-describing modular applications. Different from traditional distributed computing, Web services are more dynamic on its ser-vice discovery and run-time binding mechanism. As big numbers of Web services appear on the Web, Web services discovery mechanism becomes essential. This chapter provides an in-depth discussion on works about Web services discovery. We first present some basis knowledge for the Web services discovery. After that we introduce some value-added services for the Web services discovery, such as the quality of service (QoS)-aware services discovery and semantics-aware service discovery. Since nonfunctional attributes, especially the QoS information, are quite important for mission critical tasks, we finally present our Semantic Web-based solution for QoS-aware service discovery and measurement. It complements Web ontology language-service (OWL-S) to achieve better services discovery, composition and measurement.

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