When the «rate» stereotype is applied to an activity edge, it specifies the expected value of the number of objects and values that traverse the edge per time interval, that is, the expected value rate at which they leave the source node and arrive at ...

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SysML Activity extension stereotypes - REFERENCE CARD
Source
OMG Systems Modeling Language (SysML) 1.6
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About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes
Snippet kind
INFO
UML keywords
ActivityEdge
DirectedRelationship::/source
DirectedRelationship::/target
object token
value
ActivityNode
SysML keywords
Rate
«rate»
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When the «rate» stereotype is applied to an activity edge, it specifies the expected value of the number of objects and values that traverse the edge per time interval, that is, the expected value rate at which they leave the source node and arrive at the target node.
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Rate ... It does not refer to the rate at which a value changes over time.
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Rate ... It does not refer to the rate at which a value changes over time.
Rate ... When the stereotype is applied to a parameter, the parameter shall be streaming, and the stereotype gives the number of objects or values that flow in or out of the parameter per time interval while the behavior or operation is executing.
Streaming is a characteristic of UML behavior parameters that supports the input and output of items while a behavior is executing, rather than only when the behavior starts and stops. The flow may be continuous or discrete ...
The «rate» stereotype has a rate property of type InstanceSpecification. The values of this property shall be instances of classifiers stereotyped by «valueType» or «distributionDefinition» ...
Rate::rate - In particular, the denominator for units used in the rate property shall be time units.
Discrete rate is a special case of rate of flow ... where the increment of time between items is a non-zero. Examples include the production of assemblies in a factory and signals set at periodic time intervals.
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