Constant

Constant // Literal constant tensor

Description

The output is a tensor initialized from the values attribute.

Attributes

Name	Type	Notes
type	ngraph::element::type	The element type of the value in the computation
shape	ngraph::Shape	The shape of the constant
values	const std::vector<T>&	Constant elements in row-major order. T must be compatible with the element type

Outputs

Name	Element Type	Shape
output	type	shape

C++ Interface

class Constant : public ngraph::Node

Class for constants.

Subclassed by ngraph::op::ScalarConstantLikeBase

Public Functions

template<typename T>
Constant(const element::Type &type, Shape shape, const std::vector<T> &values)

Constructs a tensor constant.

Parameters

• type: The element type of the tensor constant.
• shape: The shape of the tensor constant.
• values: A vector of literals for initializing the tensor constant. The size of values must match the size of the shape.

Constant(const element::Type &type, Shape shape, const std::vector<std::string> &values)

Constructs a tensor constant This constructor is mainly to support deserialization of constants.

Parameters

• type: The element type of the tensor constant.
• shape: The shape of the tensor constant.
• values: A list of string values to use as the constant data.

Constant(const element::Type &type, const Shape &shape, const void *data)

Constructs a tensor constant with the same initialization value copied across.

Parameters

• type: The element type of the tensor constant.
• shape: The shape of the tensor constant.
• data: A void* to constant data.

void validate_and_infer_types()

Throws if the node is invalid.

vector<string> get_value_strings() const

Return

The initialization literals for the tensor constant.

Public Static Functions

template<typename T>
static std::shared_ptr<op::Constant> create(const element::Type &type, Shape shape, const std::vector<T> values)

Wrapper around constructing a shared_ptr of a Constant.

Parameters

• type: The element type of the tensor constant.
• shape: The shape of the tensor constant.
• values: A vector of values to use as the constant data.

template<typename T>
static std::shared_ptr<op::Constant> create(const element::Type &type, Shape shape, std::initializer_list<T> values)

Wrapper around constructing a shared_ptr of a Constant.

Parameters

• type: The element type of the tensor constant.
• shape: The shape of the tensor constant.
• values: An initializer_list of values to use as the constant data.