Description

This command sets the starting temperature value for an optimization using the Simulated Annealing method.

Syntax

SetMzrAnnealStartTemperature startTemp

Parameters

startTemp As Double

Starting temperature value for the simulated annealing optimization method.  A value of -1 specifies use of the "Auto" option, in which the merit function is randomly sampled within the variable space and a value is auto-determined such that the simplex can step over the maximum value found 80% of the time.

Example

The following example sets the starting conditions for an optimization.  Note that in the example, SetMzrAnnealStopBelowMinTemperature is called after SetMzrAnnealStopAfterSteps.  This means that the stopping criteria is controlled by the min temperature setting.

Sub Main

    Dim multiStarts As Long

    Dim startTemp As Double

    Dim stopSteps As Long

    Dim stopMinTemp As Double

    Dim tempReduceFrac As Double

    multiStarts = 15

    startTemp = -1

    stopSteps = 50

    stopMinTemp = 0.001

    tempReduceFrac = 0.9

    SetMzrMultiStarts multiStarts

    SetMzrAnnealStartTemperature startTemp

    SetMzrAnnealStopAfterSteps stopSteps

    SetMzrAnnealStopBelowMinTemperature stopMinTemp

    SetMzrAnnealTemperatureReduceFraction tempReduceFrac

    Print "Multi Starts: " & Chr(9) & multiStarts

    Print "Start Temp: " & Chr(9) & startTemp

    Print "Stop Steps: " & Chr(9) & stopSteps

    Print "Stop Min Temp: " & Chr(9) & stopMinTemp

    Print "Temp Reduc. Frac: " & Chr(9) & tempReduceFrac

End Sub

See Also

Optimization Commands