fann_set_activation_function
Sets the activation function for supplied neuron and layer
Description
bool fann_set_activation_function
( resource $ann
, int $activation_function
, int $layer
, int $neuron
)
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.
Parameters
-
ann
-
Neural network resource.
-
activation_function
-
The activation functions constant.
-
layer
-
Layer number.
-
neuron
-
Neuron number.
Return Values
Returns TRUE
on success, or FALSE
otherwise.
See Also
- fann_set_activation_function_layer
- fann_set_activation_function_hidden
- fann_set_activation_function_output
- fann_set_activation_steepness
- fann_get_activation_function