tensorflow::ops::TakeManySparseFromTensorsMap

Converts a sparse representation into a dense tensor.

Summary

Builds an array dense with shape output_shape such that

If sparse_indices is scalar

dense[i] = (i == sparse_indices ? sparse_values : default_value)

If sparse_indices is a vector, then for each i

dense[sparse_indices[i]] = sparse_values[i]

If sparse_indices is an n by d matrix, then for each i in [0, n)

dense[sparse_indices[i][0], ..., sparse_indices[i][d-1]] = sparse_values[i]

All other values in `dense` are set to `default_value`.  If `sparse_values` is a
    scalar, all sparse indices are set to this single value.

    Indices should be sorted in lexicographic order, and indices must not
    contain any repeats. If `validate_indices` is true, these properties
    are checked during execution.

    Args:
    * scope: A Scope object
    * sparse_indices: 0-D, 1-D, or 2-D.  `sparse_indices[i]` contains the complete
    index where `sparse_values[i]` will be placed.
    * output_shape: 1-D.  Shape of the dense output tensor.
    * sparse_values: 1-D.  Values corresponding to each row of `sparse_indices`,
    or a scalar value to be used for all sparse indices.
    * default_value: Scalar value to set for indices not specified in
    `sparse_indices`.

    Optional attributes (see `Attrs`):
    * validate_indices: If true, indices are checked to make sure they are sorted in
    lexicographic order and that there are no repeats.

    Returns:
    * `Output`: Dense output tensor of shape `output_shape`. */
class SparseToDense {
 public:
  /// Optional attribute setters for SparseToDense
  struct Attrs {
    /** If true, indices are checked to make sure they are sorted in
        lexicographic order and that there are no repeats.

        Defaults to true */
    TF_MUST_USE_RESULT Attrs ValidateIndices(bool x) {
      Attrs ret = *this;
      ret.validate_indices_ = x;
      return ret;
    }

    bool validate_indices_ = true;
  };
  SparseToDense(const tensorflow::Scope& scope, tensorflow::Input
              sparse_indices, tensorflow::Input output_shape,
              tensorflow::Input sparse_values, tensorflow::Input
              default_value);
  SparseToDense(const tensorflow::Scope& scope, tensorflow::Input
              sparse_indices, tensorflow::Input output_shape,
              tensorflow::Input sparse_values, tensorflow::Input
              default_value, const SparseToDense::Attrs& attrs);
  operator ::tensorflow::Output() const { return dense; }
  operator ::tensorflow::Input() const { return dense; }
  ::tensorflow::Node* node() const { return dense.node(); }

  static Attrs ValidateIndices(bool x) {
    return Attrs().ValidateIndices(x);
  }

Operation operation;
  tensorflow::Output dense;
};

/** Read `SparseTensors` from a `SparseTensorsMap` and concatenate them.

    The input `sparse_handles` must be an `int64` matrix of shape `[N, 1]` where
    `N` is the minibatch size and the rows correspond to the output handles of
    `AddSparseToTensorsMap` or `AddManySparseToTensorsMap`.  The ranks of the
    original `SparseTensor` objects that went into the given input ops must all
    match.  When the final `SparseTensor` is created, it has rank one
    higher than the ranks of the incoming `SparseTensor` objects
    (they have been concatenated along a new row dimension on the left).

    The output `SparseTensor` object's shape values for all dimensions but the
    first are the max across the input `SparseTensor` objects' shape values
    for the corresponding dimensions.  Its first shape value is `N`, the minibatch
    size.

    The input `SparseTensor` objects' indices are assumed ordered in
    standard lexicographic order.  If this is not the case, after this
    step run `SparseReorder` to restore index ordering.

    For example, if the handles represent an input, which is a `[2, 3]` matrix
    representing two original `SparseTensor` objects:

    and

    then the final `SparseTensor` will be:

Args:

• scope: A Scope object
• sparse_handles: 1-D, The N serialized SparseTensor objects. Shape: [N].
• dtype: The dtype of the SparseTensor objects stored in the SparseTensorsMap.

Optional attributes (see Attrs):

• container: The container name for the SparseTensorsMap read by this op.
• shared_name: The shared name for the SparseTensorsMap read by this op. It should not be blank; rather the shared_name or unique Operation name of the Op that created the original SparseTensorsMap should be used.

Returns:

• Output sparse_indices: 2-D. The indices of the minibatch SparseTensor.
• Output sparse_values: 1-D. The values of the minibatch SparseTensor.
• Output sparse_shape: 1-D. The shape of the minibatch SparseTensor.

Public attributes

Operation operation

::tensorflow::Output sparse_indices

::tensorflow::Output sparse_shape

::tensorflow::Output sparse_values

Public functions

 TakeManySparseFromTensorsMap(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input sparse_handles,
  DataType dtype
)

 TakeManySparseFromTensorsMap(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input sparse_handles,
  DataType dtype,
  const TakeManySparseFromTensorsMap::Attrs & attrs
)

Public static functions

Attrs Container(
  StringPiece x
)

Attrs SharedName(
  StringPiece x
)