If `x`

has shape `(s1, s2, s3)`

and `axis`

is `2`

, the output
will have shape `(s1, s2 * rep, s3)`

.

`k_repeat_elements(x, rep, axis)`

A tensor.

- x
Tensor or variable.

- rep
Integer, number of times to repeat.

- axis
Axis along which to repeat (axis indexes are 1-based)

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.