https://www.tensorflow.org/probability/api_docs/python/tfp/substrates/numpy/bijectors/Softsign
tfp.substrates.numpy.bijectors.Softsign | TensorFlow Probability
Bijector which computes Y = g(X) = X / (1 + |X|).
tfpsubstratesnumpysoftsigntensorflow
https://tensorflow.google.cn/versions/r2.8/api_docs/python/tf/keras/activations/softsign
tf.keras.activations.softsign | TensorFlow v2.8.4
Softsign activation function, softsign(x) = x / (abs(x) + 1).
kerasactivationssoftsigntensorflow