Instantiates a placeholder tensor and returns it.
k_placeholder(
shape = NULL,
ndim = NULL,
dtype = NULL,
sparse = FALSE,
name = NULL
)
Tensor instance (with Keras metadata included).
Shape of the placeholder (integer list, may include NULL
entries).
Number of axes of the tensor. At least one of shape
, ndim
must be specified. If both are specified, shape
is used.
Placeholder type.
Logical, whether the placeholder should have a sparse type.
Optional name string for the placeholder.
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.