Instantiates a placeholder tensor and returns it.
k_placeholder(shape = NULL, ndim = NULL, dtype = NULL, sparse = FALSE, name = NULL)
Shape of the placeholder (integer list, may include
Number of axes of the tensor. At least one of
Logical, whether the placeholder should have a sparse type.
Optional name string for the placeholder.
Tensor instance (with Keras metadata included).
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://keras.rstudio.com/articles/backend.html#backend-functions.