Softmax of a tensor.

`k_softmax(x, axis = -1)`

A tensor.

- x
A tensor or variable.

- axis
The dimension softmax would be performed on. The default is -1 which indicates the last dimension.

This function is part of a set of Keras backend functions that enable lower level access to the core operations of the backend tensor engine (e.g. TensorFlow, CNTK, Theano, etc.).

You can see a list of all available backend functions here: https://tensorflow.rstudio.com/reference/keras/index.html#backend.