Class ApproximateFunction<N extends Comparable<N>>

java.lang.Object

org.ojalgo.function.multiary.ApproximateFunction<N>

All Implemented Interfaces:

BasicFunction, BasicFunction.PlainUnary<Access1D<N>, N>, MultiaryFunction<N>, MultiaryFunction.TwiceDifferentiable<N>

Direct Known Subclasses:

FirstOrderApproximation, SecondOrderApproximation

abstract class ApproximateFunction<N extends Comparable<N>>
extends Object
implements MultiaryFunction.TwiceDifferentiable<N>

Nested Class Summary

Nested classes/interfaces inherited from interface BasicFunction

BasicFunction.Differentiable<N,F>, BasicFunction.Integratable<N,F>, BasicFunction.PlainUnary<T,R>

Nested classes/interfaces inherited from interface MultiaryFunction

MultiaryFunction.Affine<N>, MultiaryFunction.Constant<N>, MultiaryFunction.Convex<N>, MultiaryFunction.Linear<N>, MultiaryFunction.PureQuadratic<N>, MultiaryFunction.Quadratic<N>, MultiaryFunction.TwiceDifferentiable<N>

Field Summary

Fields

Modifier and Type	Field	Description
private final Access1D<N>	myPoint

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ApproximateFunction(MultiaryFunction.TwiceDifferentiable<N> function, Access1D<N> point)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
(package private) abstract PhysicalStore.Factory<N,?>	factory()
MatrixStore<N>	getLinearFactors(boolean negated)
int	hashCode()
protected PhysicalStore<N>	shift(Access1D<?> arg)
final FirstOrderApproximation<N>	toFirstOrderApproximation(Access1D<N> arg)
final SecondOrderApproximation<N>	toSecondOrderApproximation(Access1D<N> arg)

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface MultiaryFunction

andThen, arity, invoke

Methods inherited from interface MultiaryFunction.TwiceDifferentiable

getGradient, getHessian

Field Details

myPoint

private final Access1D<N extends Comparable<N>> myPoint

Constructor Details

ApproximateFunction

protected ApproximateFunction(MultiaryFunction.TwiceDifferentiable<N> function,
 Access1D<N> point)

Method Details

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

getLinearFactors

public MatrixStore<N> getLinearFactors(boolean negated)

Specified by:

getLinearFactors in interface MultiaryFunction.TwiceDifferentiable<N extends Comparable<N>>

Returns:

The gradient at origin (0-vector), negated or not

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toFirstOrderApproximation

public final FirstOrderApproximation<N> toFirstOrderApproximation(Access1D<N> arg)

Specified by:

toFirstOrderApproximation in interface MultiaryFunction.TwiceDifferentiable<N extends Comparable<N>>

toSecondOrderApproximation

public final SecondOrderApproximation<N> toSecondOrderApproximation(Access1D<N> arg)

Specified by:

toSecondOrderApproximation in interface MultiaryFunction.TwiceDifferentiable<N extends Comparable<N>>

shift

protected PhysicalStore<N> shift(Access1D<?> arg)

factory

abstract PhysicalStore.Factory<N,?> factory()