`x`

by subtracting `decrement`

.Update the value of `x`

by subtracting `decrement`

.

`k_update_sub(x, decrement)`

The variable `x`

updated.

- x
A

`Variable`

.- decrement
A tensor of same shape as

`x`

.

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.