Semantics-enriched QoS policies for web service interactions

ABSTRACT

Web service technology provides an infrastructure for developing distributed systems and performing electronic business operations within and across organizational boundaries. It is still evolving. Currently, it is lacking mechanisms to deal with Quality of Service (QoS). Service consumer requirements may include functional and non-functional aspects. The Web Services Description Language (WSDL) and Universal Description Discovery & Integration (UDDI) standards support the specification, publication and discovery of Web services based only on functional aspects. The goal of this paper is to propose an approach for supporting Web service interactions. Brokers are employed to facilitate the partnership establishment between service consumers and providers. They select services in UDDI registries according to consumer functional and non-functional requirements. The main contributions of this paper are an extension to the Web Services Policy Framework (WS-Policy) standard to complement WSDL descriptions with semantics-enriched QoS policies using the Ontology Web Language (OWL) and ABLE Rule Language (ARL) standards, and an extension to the UDDI standard to include QoS policies.

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INDEX TERMS

Primary Classification:
  H. Information Systems
  H.3 INFORMATION STORAGE AND RETRIEVAL
      H.3.3 Information Search and Retrieval
          Subjects: Search process

Additional Classification:
  H. Information Systems
  H.3 INFORMATION STORAGE AND RETRIEVAL
      H.3.5 On-line Information Services
          Subjects: Web-based services

General Terms:
Algorithms, Languages, Standardization

Keywords:
ARL, OWL, UDDI, WS-policy, ontology, policy, quality of service, rule, web service, web service discovery, web service specification