Package com.opttek.optquest

Class COptQuestBSplineCorrectionMatrixVariable

java.lang.Object

com.opttek.optquest.COptQuestVariable

com.opttek.optquest.COptQuestUserControlledVariable

com.opttek.optquest.COptQuestManifoldVariable

com.opttek.optquest.COptQuestBSplineCorrectionMatrixVariable

public class COptQuestBSplineCorrectionMatrixVariable
extends COptQuestManifoldVariable

A B-spline correction matrix variable. Its value is a baseline matrix, initial, plus a correction on a smooth surface defined by a grid of knots. Use a B-spline correction matrix variable to keep a known table and change it smoothly.

The surface is a uniform cubic B-spline. It is smooth, and it does not pass through its knots: each value is a weighted average of the nearby knot values. The knots form a knotRows by knotCols grid at evenly spaced rows and columns, with knots at all four edges.

In every solution that the engine generates, every entry is from min to max. The engine first moves each entry of initial into [min, max].

Variable names: <name>@<row>,<col> for each entry, with 1-based row and column numbers, row by row. Each name contains a comma, so write it in brackets in an expression: [<name>@1,2].

In most programs, you add this variable with OptQuestModel.AddBSplineCorrectionMatrixVariable and read its values with OptQuestSolution.GetValue(String) and the generated names. Construct this class only when you add the variable with COptQuestOptimization.AddVariable(COptQuestVariable).

See Also:

• OptQuestModel.AddBSplineCorrectionMatrixVariable(String, double[][], int, int, double, double)

Constructor Summary

Constructors

Constructor	Description
COptQuestBSplineCorrectionMatrixVariable(String name, double[][] initial, int knotRows, int knotCols, double min, double max)	Creates a B-spline correction matrix variable.

Method Summary

Modifier and Type	Method	Description
List<COptQuestVariable>	getInputVariables()	Returns an empty list, because a B-spline correction matrix variable has no ordinary input variables.
List<COptQuestUserControlledVariable>	getOutputVariables()	Returns an empty list, because a B-spline correction matrix variable has no output variables.
List<COptQuestUserControlledVariable>	getProjectedInputVariables()	Returns the decision values of this manifold variable that are not ordinary decision variables.

Methods inherited from class com.opttek.optquest.COptQuestManifoldVariable

getConstraints

Methods inherited from class com.opttek.optquest.COptQuestUserControlledVariable

GetReplicationStatistic, GetReplicationStatisticValue, SetExclusiveRange, SetLowerBound, SetReplicationStatistic, SetUpperBound

Methods inherited from class com.opttek.optquest.COptQuestVariable

equals, GetDOELowerBound, GetDOEUpperBound, GetExclusiveLowerBoundAt, GetExclusiveUpperBoundAt, getID, GetLowerBound, GetName, GetNumberOfExclusiveRanges, GetStepSize, GetSuggestedValue, GetUpperBound, getVarRange, hashCode, isZeroOne, SetName

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

COptQuestBSplineCorrectionMatrixVariable

public COptQuestBSplineCorrectionMatrixVariable(String name,
 double[][] initial,
 int knotRows,
 int knotCols,
 double min,
 double max)
                                         throws COptQuestException

Creates a B-spline correction matrix variable.

Parameters:

name - base name of the variable

initial - the baseline matrix; the variable has the same number of rows and columns

knotRows - number of knot rows; the surface is smoother down the columns with fewer knot rows. A value less than 2 is used as 2, and a value greater than the number of rows is used as that number.

knotCols - number of knot columns; the surface is smoother along the rows with fewer knot columns. A value less than 2 is used as 2, and a value greater than the number of columns is used as that number.

min - lower bound of every entry

max - upper bound of every entry

Throws:

COptQuestException - if an error occurs while the variable is created

Method Details

getInputVariables

public List<COptQuestVariable> getInputVariables()

Returns an empty list, because a B-spline correction matrix variable has no ordinary input variables.

The values of a B-spline correction matrix variable are in the list that getProjectedInputVariables() returns. That list has one variable <name>@<row>,<col> for each entry.

Returns:

an empty list

getOutputVariables

public List<COptQuestUserControlledVariable> getOutputVariables()

Returns an empty list, because a B-spline correction matrix variable has no output variables.

The values of a B-spline correction matrix variable are in the list that getProjectedInputVariables() returns. That list has one variable <name>@<row>,<col> for each entry.

Returns:

an empty list

getProjectedInputVariables

public List<COptQuestUserControlledVariable> getProjectedInputVariables()

Description copied from class: COptQuestManifoldVariable

Returns the decision values of this manifold variable that are not ordinary decision variables.

For example, an angle variable returns angle@theta, and a mixture variable returns one mix@<component> name for each component. In every solution that the engine generates, and in every suggested solution, these values are inside the set of the variable. Your evaluator reads them as inputs: OptQuestSolution.GetInputNames() returns them.

A constraint that uses one of these names is checked after the evaluation, like a constraint on an output. Your evaluator can receive values that break the constraint, and the solution is then infeasible.

Specified by:

getProjectedInputVariables in class COptQuestManifoldVariable

Returns:

fixed-size or immutable list of these variables; never null