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tf.keras.activations.tanh

TensorFlow 1 version View source on GitHub

Hyperbolic tangent activation function.

For example:

a = tf.constant([-3.0,-1.0, 0.0,1.0,3.0], dtype = tf.float32)
b = tf.keras.activations.tanh(a)
b.numpy()
array([-0.9950547, -0.7615942,  0.       ,  0.7615942,  0.9950547],
        dtype=float32)

x Input tensor.

Tensor of same shape and dtype of input x, with tanh activation: tanh(x) = sinh(x)/cosh(x) = ((exp(x) - exp(-x))/(exp(x) + exp(-x))).