The NLMIXED Procedure
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Overview
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Getting Started
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Syntax
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DetailsModeling Assumptions and NotationIntegral ApproximationsBuilt-in Log-Likelihood FunctionsOptimization AlgorithmsFinite-Difference Approximations of DerivativesHessian ScalingActive Set MethodsLine-Search MethodsRestricting the Step LengthComputational ProblemsCovariance MatrixPredictionComputational ResourcesDisplayed OutputODS Table Names
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Examples
- References
BOUNDS Statement
BOUNDS b-con <, b-con …> ;
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where |
b-con := |
number operator parameter_list operator number |
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or |
b-con := |
number operator parameter_list |
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or |
b-con := |
parameter_list operator number |
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and |
operator := |
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Boundary constraints are specified with a BOUNDS statement. One- or two-sided boundary constraints are allowed. The list of boundary constraints are separated by commas. For example:
bounds 0 <= a1-a9 X <= 1, -1 <= c2-c5; bounds b1-b10 y >= 0;
You can specify more than one BOUNDS statement. If you specify more than one lower (upper) bound for the same parameter, the maximum (minimum) of these is taken.
If the maximum 
of all lower bounds is larger than the minimum of all upper bounds 
for the same parameter 
, the boundary constraint is replaced by 
defined by the minimum of all upper bounds specified for .