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SERVICE ACQUISITION AND VALIDATION IN A DISTRIBUTED SERVICE DISCOVERY SYSTEM CONSISTING OF DOMAIN-SPECIFIC SUB-SYSTEMS

2010-06-12
Canturk, Deniz
Karagöz, Pınar
With the increase in the number of advertised web services, finding the web services appropriate for a given request will result in problems in terms of performance, efficiency and quality of the discovered services. In this paper, we introduce a distributed web service discovery system which consists of domain-specific subsystems. We establish ontology based domain specific web service discovery sub-systems in order to discover web services on private sites and in business registries, and in order to improve service discovery in terms of efficiency and effectiveness. An important problem with effectiveness is to check whether a discovered service is active or not. Many services in the registries are not active any more. Distributing the discovery to domain-specific subsystems makes it possible to lower the service discovery duration and to provide almost up-to-date service status. In this work, we describe the service acquisition and validation steps of the system in more detail and we present experimental results on real services acquired on the web.