fann_get_activation_steepness

fann_get_activation_steepness

Returns the activation steepness for supplied neuron and layer number

float **fann_get_activation_steepness** resource $ann int $layer int $neuron

Get the activation steepness for neuron number in layer number , counting the input layer as layer 0. neuron``layer

It is not possible to get activation steepness for the neurons in the input layer.

The steepness of an activation function says something about how fast the activation function goes from the minimum to the maximum. A high value for the activation function will also give a more aggressive training.

When training neural networks where the output values should be at the extremes (usually 0 and 1, depending on the activation function), a steep activation function can be used (e.g. 1.0).

The default activation steepness is 0.5.

ann``layerLayer number

neuronNeuron number

The activation steepness for the neuron or -1 if the neuron is not defined in the neural network, or false on error.

fann_set_activation_function``fann_set_activation_steepness_layer``fann_set_activation_steepness_hidden``fann_set_activation_steepness_output``fann_set_activation_steepness