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java.lang.Objectorg.encog.engine.network.activation.ActivationSIN
public class ActivationSIN
An activation function based on the sin function, with a double period. This activation is typically part of a CPPN neural network, such as HyperNEAT. The idea for this activation function was developed by Ken Stanley, of the University of Texas at Austin. http://www.cs.ucf.edu/~kstanley/
Constructor Summary | |
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ActivationSIN()
Construct the sin activation function. |
Method Summary | |
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void |
activationFunction(double[] x,
int start,
int size)
Implements the activation function. |
ActivationFunction |
clone()
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double |
derivativeFunction(double b,
double a)
Calculate the derivative. |
String |
getFactoryCode()
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String[] |
getParamNames()
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double[] |
getParams()
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boolean |
hasDerivative()
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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 ActivationSIN()
Method Detail |
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public final ActivationFunction clone()
clone
in interface ActivationFunction
clone
in class Object
public final boolean hasDerivative()
hasDerivative
in interface ActivationFunction
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 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 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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