mikera.vectorz.ops

Class GaussianNoise

java.lang.Object

mikera.vectorz.Op

mikera.vectorz.ops.GaussianNoise

All Implemented Interfaces:

IOperator

public class GaussianNoise
extends Op

Operator to add gaussian noise to a value

Field Summary

Fields

Modifier and Type	Field and Description
static GaussianNoise	UNIT_NOISE

Method Summary

Modifier and Type	Method and Description
double	apply(double x) Applies this operator to a single value, returning the result
void	applyTo(double[] data, int start, int length) Applies this operator to the specified range within a double[] array.
double	averageValue()
static GaussianNoise	create(double stdDev)
double	derivative(double x) Returns the derivative of this Op for a given input value x i.e.
double	derivativeForOutput(double y) Returns the derivative of this Op for a given output value y i.e.
Op	getDerivativeOp() Gets an operator which represents the derivative of this operator.
boolean	hasDerivative() Returns true if this operator supports computing the derivative for a given input
boolean	isStochastic() Returns true if the operator is stochastic, i.e returns random values for at least some inputs

Methods inherited from class mikera.vectorz.Op

applyInverse, applyTo, applyTo, applyTo, applyTo, applyTo, applyTo, applyTo, applyTo, compose, compose, constrainValues, divide, getInverse, getTransform, hasDerivativeForOutput, hasInverse, isBounded, isDomainBounded, maxDomain, maxValue, minDomain, minValue, product, sum, toString, validateOutput

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

UNIT_NOISE

public static final GaussianNoise UNIT_NOISE

Method Detail

create

public static GaussianNoise create(double stdDev)

isStochastic

public boolean isStochastic()

Description copied from class: Op

Returns true if the operator is stochastic, i.e returns random values for at least some inputs

Overrides:

isStochastic in class Op

Returns:

apply

public double apply(double x)

Description copied from interface: IOperator

Applies this operator to a single value, returning the result

Specified by:

apply in interface IOperator

Specified by:

apply in class Op

Returns:

applyTo

public void applyTo(double[] data,
                    int start,
                    int length)

Description copied from interface: IOperator

Applies this operator to the specified range within a double[] array.

Specified by:

applyTo in interface IOperator

Overrides:

applyTo in class Op

hasDerivative

public boolean hasDerivative()

Description copied from class: Op

Returns true if this operator supports computing the derivative for a given input

Overrides:

hasDerivative in class Op

Returns:

derivative

public double derivative(double x)

Description copied from class: Op

Returns the derivative of this Op for a given input value x i.e. f'(x) where f is the operator

Overrides:

derivative in class Op

Returns:

derivativeForOutput

public double derivativeForOutput(double y)

Description copied from class: Op

Returns the derivative of this Op for a given output value y i.e. f'(g(y)) where f is the operator, g is the inverse of f

Overrides:

derivativeForOutput in class Op

Returns:

getDerivativeOp

public Op getDerivativeOp()

Description copied from class: Op

Gets an operator which represents the derivative of this operator. Returns nil if this cannot be computed or does not exist.

Overrides:

getDerivativeOp in class Op

Returns:

averageValue

public double averageValue()

Overrides:

averageValue in class Op