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java.lang.Objectorg.encog.engine.network.activation.ActivationTANH
public class ActivationTANH
The hyperbolic tangent activation function takes the curved shape of the hyperbolic tangent. This activation function produces both positive and negative output. Use this activation function if both negative and positive output is desired.
Constructor Summary | |
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ActivationTANH()
Construct a basic HTAN activation function, with a slope of 1. |
Method Summary | |
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void |
activationFunction(double[] x,
int start,
int size)
Implements the activation function. |
ActivationFunction |
clone()
|
double |
derivativeFunction(double b,
double a)
Calculate the derivative. |
String |
getFactoryCode()
|
String[] |
getParamNames()
|
double[] |
getParams()
|
boolean |
hasDerivative()
|
void |
setParam(int index,
double value)
Set one of the params for this activation function. |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ActivationTANH()
Method Detail |
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public final void activationFunction(double[] x, int start, int size)
activationFunction
in interface ActivationFunction
x
- The input array to the activation function.start
- The starting index.size
- The number of values to calculate.public final ActivationFunction clone()
clone
in interface ActivationFunction
clone
in class Object
public final double derivativeFunction(double b, double a)
derivativeFunction
in interface ActivationFunction
b
- The number to calculate the derivative of, the number "before" the
activation function was applied.a
- The number "after" an activation function has been applied.
public final String[] getParamNames()
getParamNames
in interface ActivationFunction
public final double[] getParams()
getParams
in interface ActivationFunction
public final boolean hasDerivative()
hasDerivative
in interface ActivationFunction
public final void setParam(int index, double value)
setParam
in interface ActivationFunction
index
- The index of the param to set.value
- The value to set.public String getFactoryCode()
getFactoryCode
in interface ActivationFunction
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