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java.lang.Objectorg.encog.engine.network.activation.ActivationCompetitive
public class ActivationCompetitive
An activation function that only allows a specified number, usually one, of the out-bound connection to win. These connections will share in the sum of the output, whereas the other neurons will receive zero. This activation function can be useful for "winner take all" layers.
Field Summary | |
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static int |
PARAM_COMPETITIVE_MAX_WINNERS
The offset to the parameter that holds the max winners. |
Constructor Summary | |
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ActivationCompetitive()
Create a competitive activation function with one winner allowed. |
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ActivationCompetitive(int winners)
Create a competitive activation function with the specified maximum number of winners. |
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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int |
getMaxWinners()
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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 |
Field Detail |
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public static final int PARAM_COMPETITIVE_MAX_WINNERS
Constructor Detail |
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public ActivationCompetitive()
public ActivationCompetitive(int winners)
winners
- The maximum number of winners that this function supports.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 int getMaxWinners()
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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