XSLP_DELTAZLIMIT
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Description
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Number of SLP iterations during which to apply XSLP_DELTA_Z
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Type
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Integer
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Default value
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0
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Note
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XSLP_DELTA_Z is used to retain small derivatives which would otherwise be regarded as zero. This is helpful in avoiding local optima, but may make the linearized problem more difficult to solve because of the number of small nonzero elements in the resulting matrix.
XSLP_DELTAZLIMIT can be set to a nonzero value, which is then the number of iterations for which
XSLP_DELTA_Z will be used. After that, small derivatives will be set to zero. A negative value indicates no automatic perturbations to the derivatives in any situation.
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Affects routines
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See also
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