Slice¶
Slice // Produces a sub-tensor of its input.
Description¶
Takes a slice of an input tensor, i.e., the sub-tensor that resides within a bounding box, optionally with a stride.
Inputs¶
| Name | Element Type | Shape |
|---|---|---|
| arg | Any | \(D=D_1, D_2, \ldots, D_n\). |
Attributes¶
| Name | Description |
|---|---|
| lower_bounds | The (inclusive) lower-bound coordinates \(L=L_1, L_2, \ldots, L_n.\) |
| upper_bounds | The (exclusive) upper-bound coordinates \(U=U_1, U_2, \ldots, U_n.\) |
| strides | The strides \(S=S_1, S_2, \ldots, S_n\) for the slices. Defaults to 1s. |
Outputs¶
| Name | Element Type | Shape |
|---|---|---|
output |
Same as arg | \(D'_i=\lceil\frac{U_i-L_i}{S_i}\rceil\). |
Mathematical Definition¶
\[\mathtt{output}_I = \mathtt{arg}_{L+I*S}\]
where \(I=I_1, I_2, \ldots, I_n\) is a coordinate of the output.
C++ Interface¶
-
class
Slice: public ngraph::op::Op¶ Takes a slice of an input tensor, i.e., the sub-tensor that resides within a bounding box, optionally with stride.
Public Functions
-
const NodeTypeInfo &
get_type_info() const¶ Returns the NodeTypeInfo for the node’s class. During transition to type_info, returns a dummy type_info for Node if the class has not been updated yet.
-
Slice()¶ Constructs a tensor slice operation.
-
Slice(const Output<Node> &arg, const Coordinate &lower_bounds, const Coordinate &upper_bounds, const Strides &strides)¶ Constructs a tensor slice operation.
- Parameters
arg: The tensor to be sliced.lower_bounds: The axiswise lower bounds of the slice (inclusive).upper_bounds: The axiswise upper bounds of the slice (exclusive).strides: The slicing strides; for example, strides of{n,m}means to take every nth row and every mth column of the input matrix.
-
Slice(const Output<Node> &arg, const Coordinate &lower_bounds, const Coordinate &upper_bounds)¶ Constructs a tensor slice operation with unit strides; i.e., every element inside the bounding box will be copied to the output slice.
- Parameters
arg: The tensor to be sliced.lower_bounds: The axiswise lower bounds of the slice (inclusive).upper_bounds: The axiswise upper bounds of the slice (exclusive).
-
void
validate_and_infer_types()¶ Throws if the node is invalid.
-
const Coordinate &
get_lower_bounds() const¶ - Return
- The inclusive lower-bound coordinates.
-
const Coordinate &
get_upper_bounds() const¶ - Return
- The exclusive upper-bound coordinates.
-
const Strides &
get_strides() const¶ - Return
- The slicing strides.
-
const NodeTypeInfo &