Initial Simplex Size |
This is the size of the starting simplex as a fraction of your domain.
It must be a real value greater than zero and less than or equal to one.
It has the highest probability of finding a global optimum when started
with a bigger initial size. Because it spans a larger fraction of the
design space, the chances of getting trapped in a local minimum are smaller.
The default value is 0.1, which is equivalent to 10% of the domain.
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Maximum Iterations |
This parameter defines the number of times a simplex would execute a reflection (and, in
addition, the potential expansion or contraction) in search of the optimum design. The
value type is integer. The default value is 40. Note that, this setting does not
directly define the absolute number of subflow evaluations. |
Simplex Count |
Extends the standard Downhill Simplex process by allowing a design search
to be performed with more than one simplex running in parallel.
When you select Execute in parallel to enable parallel processing and N simplexes
are active, the SIMULIA Execution Engine dispatches a batch of N points, one per simplex, on each iteration.
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Maximum Failed Runs | This parameter is used to set the maximum number of failed subflow evaluations that can be
tolerated by the optimization technique. If the number of failed runs exceeds this
value, the optimization component will terminate execution. To disable this feature,
set this option to any negative value (for example, –1). When this option is set to a
negative value, the optimization will continue execution despite any number of failed
subflow runs. |
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Failed Run Penalty Value | This parameter represents the value of the Penalty
parameter that is used for all failed subflow runs. The default value
is . |
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Failed Run Objective Value | This parameter represents the value of the Objective
parameter that is used for all failed subflow runs. The default value
is . |
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