tf.keras.ops.log_sigmoid

Logarithm of the sigmoid activation function.

It is defined as f(x) = log(1 / (1 + exp(-x))).

x Input tensor.

A tensor with the same shape as x.

Example:

x = keras.ops.convert_to_tensor([-0.541391, 0.0, 0.50, 5.0])
keras.ops.log_sigmoid(x)
array([-1.0000418, -0.6931472, -0.474077, -0.00671535], dtype=float32)