A Trade-Off Negotiation Strategy for Pareto-Optimal Service Composition with Additive QoS-constraints

Claudia Di Napoli () and Silvia Rossi ()
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Claudia Di Napoli: C.N.R.
Silvia Rossi: University of Naples Federico II

Group Decision and Negotiation, 2021, vol. 30, issue 1, No 6, 119-141

Abstract: Abstract QoS-based service composition enables the development of complex business applications. They are composed of distributed services characterized by QoS attributes representing non-functional characteristics, such as cost, execution time, and reliability. With the proliferation of services on the Internet, more candidates for each component service may be available with different QoS values. Hence, the ones satisfying QoS global constraints required for the application have to be selected. Automated negotiation is adopted to select component services in a dynamic market of services where provided QoS values may vary according to different market strategies. Nevertheless, when dealing with multiple QoS attributes, multiple service providers, and not shared information, it is difficult to guarantee the formal properties of the negotiation outcomes. In the present work, we propose a trade-off negotiation strategy that allows reaching a Pareto-optimal agreement, if it exists. The agreement consists of the QoS values of component services that are the ones selected to provide the complete application. The strategy exploits both the competition, that is due to multiple services providing the same functionality with different QoS values, and the cooperation among the providers of the different component services, that are necessary to meet the required end-to-end QoS constraints.

Keywords: QoS-based service composition; QoS constraints; Multi-attribute negotiation; Trade-off strategies (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s10726-020-09709-8

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