Module ojalgo

Package org.ojalgo.function.multiary

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 org.ojalgo.function.BasicFunction

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

Nested classes/interfaces inherited from interface org.ojalgo.function.multiary.MultiaryFunction

MultiaryFunction.Affine<N extends Comparable<N>>, MultiaryFunction.Constant<N extends Comparable<N>>, MultiaryFunction.Convex<N extends Comparable<N>>, MultiaryFunction.Linear<N extends Comparable<N>>, MultiaryFunction.PureQuadratic<N extends Comparable<N>>, MultiaryFunction.Quadratic<N extends Comparable<N>>, MultiaryFunction.TwiceDifferentiable<N extends Comparable<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 java.lang.Object

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

Methods inherited from interface org.ojalgo.function.multiary.MultiaryFunction

andThen, arity, invoke

Methods inherited from interface org.ojalgo.function.multiary.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()