« fann_scale_train_data
fann_set_activation_function_hidden »

fann_set_activation_function

(PECL fann >= 1.0.0)

fann_set_activation_function — Sets the activation function for supplied neuron and layer

説明

function fann_set_activation_function(
    resource $ann,
    int $activation_function,
    int $layer,
    int $neuron
): bool

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.

パラメータ

ann

ニューラルネットワークリソース。

activation_function

The activation functions constant.

layer

Layer number.

neuron

Neuron number.

戻り値

成功した場合に true、それ以外の場合に false を返します。

参考

関連キーワード:
activation   layer   fann   neuron   Sets   supplied   number   functions   hidden   range   input   neurons   constants   output   steepness   scale   train   Fann   resource   counting   choosing   important   note   different   while
関連する関数・ページ:
function.fann-get-activation-function   function.fann-set-activation-function-layer   function.fann-set-activation-steepness   function.fann-set-activation-function-output   function.fann-get-activation-steepness   function.fann-set-activation-steepness-layer