pal.math
Class BoundsCheckedFunction
java.lang.Object
|
+--pal.math.BoundsCheckedFunction
- All Implemented Interfaces:
- MultivariateFunction
- public class BoundsCheckedFunction
- extends java.lang.Object
- implements MultivariateFunction
returns a very large number instead of the function value
if arguments are out of bound (useful for minimization with
minimizers that don't check argument boundaries)
Method Summary |
double |
evaluate(double[] x)
computes function value, taking into account the constraints on the
argument |
double |
getLowerBound(int n)
get lower bound of argument n |
int |
getNumArguments()
get number of arguments |
double |
getUpperBound(int n)
get upper bound of argument n |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
BoundsCheckedFunction
public BoundsCheckedFunction(MultivariateFunction func)
- construct bound-checked multivariate function
(a large number will be returned on function evaluation if argument
is out of bounds; default is 1000000)
- Parameters:
func
- unconstrained multivariate functionminArg
- lower constraintmaxArg
- upper constraint
BoundsCheckedFunction
public BoundsCheckedFunction(MultivariateFunction func,
double largeNumber)
- construct constrained multivariate function
- Parameters:
func
- unconstrained multivariate functionlargeNumber
- value returned on function evaluation
if argument is out of bounds
evaluate
public double evaluate(double[] x)
- computes function value, taking into account the constraints on the
argument
- Specified by:
evaluate
in interface MultivariateFunction
- Parameters:
x
- function argument- Returns:
- function value (if argument is not in the predefined constrained area
a very large number is returned instead of the true function value)
getNumArguments
public int getNumArguments()
- Description copied from interface:
MultivariateFunction
- get number of arguments
- Specified by:
getNumArguments
in interface MultivariateFunction
- Following copied from interface:
pal.math.MultivariateFunction
- Returns:
- number of arguments
getLowerBound
public double getLowerBound(int n)
- Description copied from interface:
MultivariateFunction
- get lower bound of argument n
- Specified by:
getLowerBound
in interface MultivariateFunction
- Following copied from interface:
pal.math.MultivariateFunction
- Parameters:
n
- argument number- Returns:
- lower bound
getUpperBound
public double getUpperBound(int n)
- Description copied from interface:
MultivariateFunction
- get upper bound of argument n
- Specified by:
getUpperBound
in interface MultivariateFunction
- Following copied from interface:
pal.math.MultivariateFunction
- Parameters:
n
- argument number- Returns:
- upper bound