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With the development of Service-Oriented technologies, the amount of Web services grows rapidly. QoS-Aware Web service recommendation can help service users to design more efficient service-oriented systems. However, existing methods assume the QoS information for service users are all known and accurate, but in real case, there are always many missing QoS values in history records, which increase...
Web service discovery is a vital problem in service computing with the increasing number of services. Existing service discovery approaches merely focus on WSDLbased keyword search, semantic matching based on domain knowledge or ontologies, or QoS-based recommendations. The keyword search omits the underlying correlations and semantic knowledge or QoS information is not always available. In this paper,...
Dynamic Web service composition is challenging problem and has been intensively investigated in recent years. Nevertheless, most of existing approaches do not provide satisfactory composition results, especially when confronted with a large scale of services. In this paper, we present a novel algorithm called HRLPLA for composing Web services. The algorithm considers functional properties and QoS...
An intensive work has been done for designing efficient algorithms for combining a series of Web services. However, existing solutions for Web services composition fail to present a specific method which can guide us to compose multiple services step by step. In this paper, we propose an efficient approach to address this issue. We employ Temporal Logic of Actions (TLA) to describe the behavior of...
This paper introduces the concept of temporal logic of actions (short for TLA), with which we can formally specify the behavior of a service, and compose Web services. The approach is demonstrated by an example. A services composition algorithm is presented.
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