tf.sets.set_union(a, b, validate_indices=True)

tf.contrib.metrics.set_union(a, b, validate_indices=True)

tf.sets.set_union(a, b, validate_indices=True)

See the guide: Metrics (contrib) > Set Ops

Compute set union of elements in last dimension of a and b.

All but the last dimension of a and b must match.

Example:

a = [
  [
    [
      [1, 2],
      [3],
    ],
    [
      [4],
      [5, 6],
    ],
  ],
]
b = [
  [
    [
      [1, 3],
      [2],
    ],
    [
      [4, 5],
      [5, 6, 7, 8],
    ],
  ],
]
set_union(a, b) = [
  [
    [
      [1, 2, 3],
      [2, 3],
    ],
    [
      [4, 5],
      [5, 6, 7, 8],
    ],
  ],
]

Args:

• a: Tensor or SparseTensor of the same type as b. If sparse, indices must be sorted in row-major order.
• b: Tensor or SparseTensor of the same type as a. If sparse, indices must be sorted in row-major order.
• validate_indices: Whether to validate the order and range of sparse indices in a and b.

Returns:

A SparseTensor whose shape is the same rank as a and b, and all but the last dimension the same. Elements along the last dimension contain the unions.

Defined in tensorflow/python/ops/sets_impl.py.