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- W2003131531 abstract "Run-time service discovery and late-binding constitute some of the most challenging issues of service-oriented software engineering. For late-binding to be effective in the case of composite services, a QoS-aware composition mechanism is needed. This means determining the set of services that, once composed, not only will perform the required functionality, but also will best contribute to achieve the level of QoS promised in service level agreements (SLAs). However, QoS-aware composition relies on estimated QoS values and workflow execution paths previously obtained using a monitoring mechanism. At run-time, the actual QoS values may deviate from the estimations, or the execution path may not be the one foreseen. These changes could increase the risk of breaking SLAs and obtaining a poor QoS. Such a risk could be avoided by replanning the service bindings of the workflow slice still to be executed. This paper proposes an approach to trigger and perform composite service replanning during execution. An evaluation has been performed simulating execution and replanning on a set of composite service workflows." @default.
- W2003131531 created "2016-06-24" @default.
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- W2003131531 date "2005-01-01" @default.
- W2003131531 modified "2023-10-12" @default.
- W2003131531 title "QoS-aware replanning of composite Web services" @default.
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- W2003131531 doi "https://doi.org/10.1109/icws.2005.96" @default.
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