Log

Log  // Elementwise logine operation


Description¶

Produces a tensor of the same element type and shape as arg, where the value at each coordinate of output is the logine of the value at the corresponding coordinate of arg.

Inputs¶

Name

Element Type

Shape

arg

Any

Any

Outputs¶

Name

Element Type

Shape

output

Same as arg

Same as arg

Mathematical Definition¶

$\mathtt{output}_{i_0, \ldots, i_{n-1}} = \log(\mathtt{arg}_{i_0, \ldots, i_{n-1}})$

Backprop¶

$\overline{\mathtt{arg}} \leftarrow \frac{\Delta}{\mathtt{input}}$

C++ Interface¶

class Log : public ngraph::op::util::UnaryElementwiseArithmetic

Elementwise natural log operation.

Public Functions

const std::string &description() const

Get the string name for the type of the node, such as Add or Multiply. The class name, must not contain spaces as it is used for codegen.

Return

A const reference to the node’s type name

Log()

Constructs a natural log operation.

Log(const Output<Node> &arg)

Constructs a natural log operation.

Parameters
• arg: Node that produces the input tensor.