tf.sparse_retain(sp_input, to_retain)
Retains specified non-empty values within a SparseTensor.
For example, if sp_input has shape [4, 5] and 4 non-empty string values:
[0, 1]: a
[0, 3]: b
[2, 0]: c
[3, 1]: d
and to_retain = [True, False, False, True], then the output will be a SparseTensor of shape [4, 5] with 2 non-empty values:
[0, 1]: a
[3, 1]: d
Args:
sp_input: The input SparseTensor with N non-empty elements.
to_retain: A bool vector of length N with M true values.
Returns:
A Spars