Package deepnetts.net.layers.activation

Class Linear

java.lang.Object

deepnetts.net.layers.activation.Linear

All Implemented Interfaces:

ActivationFunction, Serializable, Consumer<TensorBase>

public final class Linear
extends Object
implements ActivationFunction, Serializable

Linear activation function and its derivative. Commonly used as an activation function in output layer for regression(numeric prediction) tasks. By default it passes it's input to output y = k * x where k is given as slope parameter. y = slope * x y' = slope slope parameter = 1 by default.

See Also:

• ActivationFunction
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Linear()
Linear(int slope)

Method Summary

Modifier and Type	Method	Description
void	apply(Tensor3D tensor, int channel)
void	apply(TensorBase tensor, int from, int to)
float	getPrime(float y)	Returns the first derivative of activation function for specified output y
float	getValue(float x)	Returns the value of activation function for specified input x

Methods inherited from class java.lang.Object

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

Methods inherited from interface deepnetts.net.layers.activation.ActivationFunction

accept

Methods inherited from interface java.util.function.Consumer

andThen

Constructor Details

Linear

public Linear()

Linear

public Linear(int slope)

Method Details

getValue

public float getValue(float x)

Description copied from interface: ActivationFunction

Returns the value of activation function for specified input x

Specified by:

getValue in interface ActivationFunction

Parameters:

x - input for activation

Returns:

value of activation function

getPrime

public float getPrime(float y)

Description copied from interface: ActivationFunction

Returns the first derivative of activation function for specified output y

Specified by:

getPrime in interface ActivationFunction

Parameters:

y - output of activation function

Returns:

first derivative of activation function

apply

public void apply(Tensor3D tensor,
 int channel)

Specified by:

apply in interface ActivationFunction

apply

public void apply(TensorBase tensor,
 int from,
 int to)

Specified by:

apply in interface ActivationFunction