org.cognity.math.functions

Interface Function

All Known Subinterfaces:

ParametrizedFunction

All Known Implementing Classes:

BipolarStep, FastGaussian, FastSigmoid, FastTanh, Gaussian, Identity, Linear, Sigmoid, Tanh

public interface Function

Represents a real-valued function .

Author:

Artur Markiewicz

Method Summary

Methods

Modifier and Type	Method and Description
double	getDeriv(double arg) Returns a value of the first derivative of the function for the given argument.
double	getValue(double arg) Returns a value of the function for the given argument.
boolean	hasDeriv() Returns true if the function is differentiable.

Method Detail

getValue

double getValue(double arg)

Returns a value of the function for the given argument.

Parameters:

arg - the argument

Returns:

the value of the function for the given argument

getDeriv

double getDeriv(double arg)

Returns a value of the first derivative of the function for the given argument.

Parameters:

arg - the argument

Returns:

the value of the first derivative of the function for the given argument

Throws:

UnsupportedOperationException - if the function is not differentiable

hasDeriv

boolean hasDeriv()

Returns true if the function is differentiable.

Returns:

• true - if the function has a first derivative
• false - if the function hasn't a first derivative