Hardshrink

class torch.nn.Hardshrink(lambd=0.5)

Element-wise applies the Hard Shrinkage (Hardshrink) function.

Hardshrink 定义为

$$\text{HardShrink}(x) = \begin{cases} x, & \text{ if } x > \lambda \\ x, & \text{ if } x < -\lambda \\ 0, & \text{ otherwise } \end{cases}$$

参数

lambd (float) – The $\lambda$ value for the Hardshrink formulation. Default: 0.5

形状

• Input: $(*)$, where $*$ represents any number of dimensions.

• Output: $(*)$, same shape as the input.

示例

>>> m = nn.Hardshrink()
>>> input = torch.randn(2)
>>> output = m(input)