Abstract
Service discovery is a key aspect in the enabling technologies for service-oriented systems, including web services. Growing attention has been paid to the content of business and service descriptions to allow services to be discovered more flexibly and accurately. This paper presents a service description model called an integrated service profile, which describes the capabilities of a service in various aspects, such as attribute-, structure-, behaviour-, and operational rule-based capabilities. An integrated service profile can be used to discover web services semantically. Criteria for considering matching between the service description and the expected capability specified in the request, with respect to each part of the profile, are proposed. A matching algorithm is based on a flexible match approach and can retrieve relevant services by using user's preference criteria. A ranking methodology with an ordinal scale is also proposed to determine the degree of matching among the matched services.
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