tf.keras.ops.selu

Scaled Exponential Linear Unit (SELU) activation function.

tf.keras.ops.selu(
    x
)

It is defined as:

f(x) = scale * alpha * (exp(x) - 1.) for x < 0, f(x) = scale * x for x >= 0.

Example:

x = np.array([-1., 0., 1.])
x_selu = keras.ops.selu(x)
print(x_selu)
array([-1.11133055, 0., 1.05070098], shape=(3,), dtype=float64)