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???. Automatic.validation: As the project grows, automatic validation becomes
important. More specifically, it is desirable to automatically check whether
the specification is correct in its syntax as well as its semantics.
???. Separation.of.design.duties: A design should separate its measurement details
for metrics from its concept definition. It is the measurement partners??™ task to
fill in the metric measurement details according to the service execution environment.
A measurement partner is the group that deploys the measurement
handlers and performs the service measurement tasks. The service provider
or requester can take on this role, or it can be outsourced to a third party.
Model.Design
According to these design principles, we divide the ontology into a three-layer
representation:
??? The profile layer defines QoS matchmaking.
??? The property definition layer defines properties and the domain and range
constraints for such properties.
??? The metrics layer defines QoS metrics and their measurement details.
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