tf.keras.activations.tanh

TensorFlow 1 version View source on GitHub

Hyperbolic tangent activation function.

tf.keras.activations.tanh(x)

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) 

Arguments:

  • x: Input tensor.

Returns:

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))).

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