GoLang fann_set_activation_function

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PHP fann_set_activation_function

PHP original manual for fann_set_activation_function [ show | php.net ]


(PECL fann >= 1.0.0)

fann_set_activation_functionSets the activation function for supplied neuron and layer


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.



Neural network resource.


The activation functions constant.


Layer number.


Neuron number.

Return Values

Returns TRUE on success, or FALSE otherwise.

See Also