fann_set_activation_function
(PECL fann >= 1.0.0)
fann_set_activation_function — Sets the activation function for supplied neuron and layer
Описание
bool fann_set_activation_function
( resource
$ann
, int $activation_function
, int $layer
, int $neuron
)Set the activation function for neuron number neuron in layer number layer, counting the input layer as layer 0.
It is not possible to set activation functions for the neurons in the input layer.
When choosing an activation function it is important to note that the activation functions have different range.
FANN_SIGMOID is e.g. in the 0 - 1 range while FANN_SIGMOID_SYMMETRIC is
in the -1 - 1 range and FANN_LINEAR is unbound.
The supplied activation_function value must be one of the activation functions constants.
The return value is one of the activation functions constants.
Список параметров
-
ann -
Ресурс (resource) нейронной сети.
-
activation_function -
The activation functions constant.
-
layer -
Layer number.
-
neuron -
Neuron number.
Возвращаемые значения
Возвращает TRUE в случае успешного выполнения, или FALSE в противном случае.
Смотрите также
- fann_set_activation_function_layer() - Sets the activation function for all the neurons in the supplied layer.
- fann_set_activation_function_hidden() - Sets the activation function for all of the hidden layers
- fann_set_activation_function_output() - Sets the activation function for the output layer
- fann_set_activation_steepness() - Sets the activation steepness for supplied neuron and layer number
- fann_get_activation_function() - Returns the activation function
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