tfp.math.dense_to_sparse

Converts dense Tensor to SparseTensor, dropping ignore_value cells.

x A Tensor.
ignore_value Entries in x equal to this value will be absent from the return SparseTensor. If None, default value of x dtype will be used (e.g. '' for str, 0 for int).
name Python str prefix for ops created by this function.

sparse_x A tf.SparseTensor with the same shape as x.

ValueError when x's rank is None.